How difficult is EEE in MIT Manipal

DRM experiments Two receiver concepts for. QRP operation on VHF. SAT tracking with PDAs MHz oscillator

Transcript

1 54TH VOLUME JUNE 2005 GERMANY 3.50 ABROAD 3, CHF 6.90 DKK 32 ZIP 15 QRP operation on VHF SAT tracking with PDAs 1200 MHz oscillator Andaman: As a guest of India's radio amateurs IP3 measure at the Mark-V Field and improve AF filters tested with SC-ICs 350-W-PA: The TE51452GN for 2 m DRM experiments Two receiver concepts for

2 FUNK AMATEUR Editor: Internet: FUNKAMATEUR magazine for radio electronics computers Dipl.-Jur. Knut Theurich, DGØZB Publisher: Box 73 Amateurfunkservice GmbH Berliner Straße 69, Berlin Tel .: (0 30) Fax: -69 Subscription administration: Angela Burkert, Tel .: (0 30) Classified ads: Editorial office: Postal address: Specialist advice: Online via Advertise or by post with an order card or informally to Box73 GmbH Dr.-Ing. Werner Hegewald, DL2RD (editorial management and amateur radio technology) Tel .: (0 30) Dipl.-Ing. Ingo Meyer, DK3RED (electronics / computer) Tel .: (0 30) Wolfgang Bedrich, DL1UU (amateur radio practice / QTC) Tel .: (0 30) FUNKAMATEUR editorial team, Berliner Straße 69, Berlin Dipl.-Ing. Bernd Petermann, DJ1TO Permanent freelance staff: J. Engelhardt, DL9HQH, Packet-QTC; Th. Frey, HB9SKA, Sat-QTC; F. Janda, OK1HH, propagation; P. John, DL7YS, VHF QTC; H. Kinzel, DK8KW, VLF- / LF-QTC; F. Langner, DJ9ZB, DX information; H.-D. Naumann, satellite radio; Th. M. Rösner, DL8AAM, IOTA-QTC; F. Rutter, DL7UFR, packet radio technology; Dr. K. Sander, Electronics; C. Stehlik, OE6CLD, OE-QTC; R.Thieme, DL7VEE, DX-QTC; A. Wellmann, DL7UAW, SWL-QTC; N. Wenzel, DL5KZA, QSL telegram; H.-D. Zander, DJ2EV, EMV (U); P. Zenker, DL2FI, QRP-QTC Club station: DFØFA, DOK FA, printing: Möller Druck und Verlag GmbH, Berlin Sales: ASV Vertriebs GmbH, Tel .: (040) Manuscripts: For unsolicited incoming manuscripts, drawings, templates, etc. we exclude any liability. We kindly ask you to contact the editorial team, preferably by telephone, before working on extensive articles; Manuscript notes on under Participate. No part of this publication may be reproduced in any form or processed, duplicated, distributed or published on the Internet using electronic systems without the express written consent of the publisher. Liability: All contributions, drawings, boards, circuits are protected by copyright. In addition, there may be patent or other property rights. The commercial production of printed circuit boards published in the magazine and the commercial programming of EPROMs etc. may only be carried out by companies authorized by the publisher. The editors are not liable for the correctness and function of the published circuits and technical descriptions. When manufacturing, selling, acquiring and operating radio transmitting and receiving devices, the statutory provisions must be observed. In the event of non-delivery through no fault of the publisher or as a result of disruptions in the industrial peace, no claims can be made against the publisher. Frequency of publication: FUNKAMATEUR appears monthly on the last Tuesday of the previous month. Domestic subscribers will receive their booklet beforehand. Issue prices: Germany 3.50, EUR 3.80 abroad, Switzerland 6.90 SFr Domestic subscriptions with unlimited cancellation options: 36 for 12 issues (3, / issue) (PLUS subscription 42). Annual subscriptions: Domestic 33.60 for 12 issues (2.80 / issue) with direct debit from the current account (as PLUS subscription 39.60); When paying by annual invoice 34.80 (as a PLUS subscription 40.80). Schoolchildren / students only 29.80 (35.80 as PLUS subscription). Abroad 38.90 for 12 issues (as PLUS subscription 44.90); overseas by airmail 72, (as PLUS subscription 78,). PLUS subscriptions: 12 issues plus CD of the year 6 each, surcharge. The CD will be delivered postage free in December of the current year. Please notify Box 73 Amateurfunkservice GmbH in writing of any cancellations of annual subscriptions 6 weeks prior to expiry. All delivery and shipping costs are included in the subscription prices. We reserve the right to change prices. Please order subscriptions to Box 73 Amateurfunkservice GmbH or online on our homepage Bank details in Germany: Box 73 Amateurfunkservice GmbH, account number, Postbank Berlin, bank code transfers from the euro zone: Box 73 Amateurfunkservice GmbH IBAN DE, BIC (SWIFT) PBNKDEFF bank details in Switzerland: Box 73 Amateurfunkservice GmbH, account number, PostFinance, currency SFr. Advertisements: At the moment, price list number 15 from the advertiser is solely responsible for the content of the advertisement. Private classified ads: Flat rate for ads up to 10 lines with 35 characters each for prepayment (check, cash or transfer of account details for direct debit) 5. Each additional line costs 1 additional. Commercial advertisements: Please request media data from the publisher or download it as a PDF file from. Sales no. A 1591 ISSN Copy deadline: May 19, 2005 First day of sale: May 31, 2005 Print run: The FUNKAMATEUR is almost completely printed on recycled paper by Box 73 Amateurfunkservice GmbH All rights reserved. We asked for your opinion Dr.-Ing. Werner Hegewald, DL2RD Editorial Three and a half years had passed since the 2001 reader survey. So it is high time to check once again whether you, dear readers, are satisfied with your magazine and to find out how your interests have changed and what we need to do better in the future. Participation in the survey was enormous again, so that the forms received by post and online give a representative picture. Amateur radio 85% Electronics 51% 43% 34% 10% 4% 4% 2% 3% BC-DX and others 13% The fact that our mix of topics, the balancing act between amateur radio and electronics, comes very close to the interests of the readers is illustrated by a graphic that in particular the many multiple responses are taken into account. Your answers to What do you value about the FUNKAMA-KEU? hardly differ from 2001. The professional competence of the editorial team and the thematic diversity of the magazine are appreciated by 92% and 87% of the readers, respectively. The presentation (42%), the low price (41%) and the website (22%) are less important. A proud 95% voted for the retention of the layout. Readers of the FUNK-AMATEUR, versatile, competent information is more important than space-consuming graphic gimmicks! And so it is not surprising that only 2% were of the opinion that we should use better paper for the booklet. When it came to wishes for the future, 19% of the readers wanted to subscribe to the vintage CD. We have already responded to this with the Plus-Abo variant, where you get the CD postage-free for a surcharge of 6 at the end of the year. 46% would like to have their classifieds published for free - a wish we are happy to fulfill. However, we still have to consider how this can be done with little effort and how the available space can be distributed fairly, details on this soon. 6% of the readers wanted the more expensive mailing, shrink-wrapped in foil, see also p. A whole series of mailings was supplemented with suggestions and critical remarks, some of which were pages long, for which we would like to express our sincere thanks. We will conscientiously evaluate this as well as all other findings and bring about changes where necessary and feasible. By the way, your bonus ideas for do-it-yourself projects were so numerous that we could not yet isolate the best suggestions. We have to put off the winners of these 50 prizes for the next issue. 50 each for participation in the survey were drawn for: F. Cimpl, OE6FCD; K. Dabrowski, OE1KDA; R. Fischer (Schwerin); J. Fövenyi, DG1NDE; S. Fritzsche, DD5SF; W. Gehrmann, DH0PAW; P. Gerike, DL9NDX; A. Henriksen, OZ7AHR; K. Hirschi, HB9BZC; H.-P. Hoffmann (Dresden); H. Keppler, DG0OEA; V. Kilinski, DL5AKF; M. Kinschus, DL6JFT; J. Kledtke, DH9JK; H. Kuyper, PA3HK; N. Liss, DO8SD; H. Meschnark, OE8MEQ; K.-D. Prior, DO1FD; A. Doll, DL1CMM; J. Reinicke, DO1TRJ; A. Scharfenberg, DL1MK; T. See, DJ1RL; R. Sehlen, DF9XI; J. Stumpp, DO1TSI, and R. Suffa (Limburgerhof). FA 6/05 539

3 In this issue Amateur radio Visiting India's radio amateurs 554 Amateur radio on Fyrskib XXI 557 For the practitioner: 350 W with the TE51452GN 2 m bipolar PA on the test bench 558 Logging portable: Bharathi, VU4RBI, leads a group of cadets in Port Blair (Andaman) amateur radio operations. Photo: Henryk Kotowski, SM0JHF / VU3HKE 350 W or more on 2 m from the IC-706? Of course, this is only possible with an intermediate PA. Read in the article whether you can be heard with a signal generated in this way. Photo: DL4KCK Typing voltage converters for notebooks or paper logs? Both options are explained in the article. The picture shows the FLE input help, in which an interactive colored text highlighting supports error correction. Screenshot: DL6MHW portable logging: Two very different approaches 560 Again: Adaptation 571 Even more large-signal resistance with the Mark-V FT-1000MP Field (1) 582 The presented local oscillator is primarily used to generate the clock frequency for the DDS signal generator already described in the FA. The board, which is available from industrial production, can, however, also be used for other RF applications if the components are changed. Photo: DG4RBF 1200 MHz local oscillator for DDS signal generator and 23 cm 595 tuning add-on for IC erection of guyed masts 599 loop of 21 m wire transmits on four bands 602 QSO party on Funkertag spread June supplement data sheet: VX-6E 591 current editorial 539 Postbox 542 Amateur radio market 546 Electronics market 548 Literature 549 New high-bay warehouse and new shop at Reichelt Elektronik 551 List of advertisers 642 QTCs working group for amateur radio & telecommunications in schools ev 626 VLF- / LF-QTC, SWL-QTC 627 UKW-QTC 628 Sat-QTC, Packet-QTC 630 SOTA-QTC 631 DX-QTC 632 IOTA-QTC 633 Diplomas from FA 634 QRP-QTC 637 QSL telegram 638 QSL- Splitter 639 Dates June DL-QTC 640 OE-QTC 642 Our cover picture The photo shows the erection of a 40 m tower. This forms the central support of a vertical antenna array for 160 and 80 m called the 4-square. Owner Chris, SP7GIQ, lives right in the middle of Poland. SM0JHF could hear his signals well when he was in India last winter see article S Photo: Henryk Kotowski, SM0JHF 540 FA 6/05

4 components LTC1062: LF low pass 5th order 587 SAA1064: Seven segment LED driver with I 2 C interface 593 Electronics BC-DX BC-DX information 566 Propagation forecast June Things worth knowing Schweizer will charge and discharge accumulator packs in a controlled manner to pirate Roger Schawinski's radio 572 From layout to finished circuit board in less than an hour 574 Development board for ATMega8 576 UE ƒ CLK CSC OP + UA confirmation card from Radio Suisse Romande via M. Lindner Radio 24 proved that pirate stations don't always have to be small and inconspicuous even broadcasting in Switzerland made technical changes. Logo: Radio 24 In order to enjoy rechargeable energy storage devices for electrical devices for a long time, suitable chargers are required. The article explains the structure of a simple but versatile example. Photo: DL7HG With integrated SC filters, taking into account the special features explained in the article, steep-sided low passes can be realized with little effort. A circuit board layout specified by the author facilitates the reproduction for a large number of applications. Low-pass filters in SC technology using the example of the LTC UV sensors perceive human skin according to the 584 In this issue Beginners VHF DX with low power Possibilities and limits 600 In the next issue: Experiments with short 2 m Yagis The author examines variants, too a powerful portable antenna for 2 m, which can also be mounted on a fiberglass mast. Photo: DK7ZB The DO project: 144 MHz FM TRX In this issue we start with the presentation of the 144 MHz FM transceiver, which, based on a kit, is an ideal do-it-yourself project for committed DOs. Photo: ZB The analysis with Radio Mobile shows that considerable distances can also be bridged with 10 W EIRP. The article gives numerous tips on how to optimally utilize this potential. Screenshot: DL2KCK radio listening to radio via the Internet works even without a computer thanks to Noxon. Screenshot: DL2MCD Noxon: Wireless web radio for the hi-fi system 552 Satellite orbit calculation for your pocket 562 The circuit for a comfortable DRM receiver, including the circuit board layout, is based on a DDS-IC and a TCA400. A PC must be used for demodulation. Photo: DL5CN Two ways, one goal: Experimental receiver for DRM (1) 568 extraterrestrial on the monitor A PC, some software and a hand scanner with a simple antenna are enough to conjure up weather images of orbiting and geostationary satellites on the monitor. The presented program can even generate 3D images. Screenshot: Plath and also: five-band vertical for DX entry to 137 khz From 500 MHz DDS generator to network analyzer Handling of radials in the EZNEC simulation program Infrared receiver with switching outputs Advance notice without guarantee. We reserve the right to make changes in individual cases for reasons of currency. Edition 7/05 will be published on June 28, 2005 FA 6/05 541

5 FUNK AMATEUR editorial team FUNKAMATEUR Postfach Berlin Additional material Where is the MP3 file mentioned in FA 5/05, p. 465, in the bibliography [13]? U. Höltge, The FA website is always updated on the first day of sale of the FA (here the). The fact that the subscribers receive the magazine a few days earlier is a special consideration on our part as a small thank you for your loyalty. The information can be found under Download Software and Additions to Articles. Incidentally, there is also additional information that is not mentioned in the article. Correction to light communication device (2) In the article Light communication device more than a toy, FA 5/05, p. 468, the following errors must be corrected: p. 468, column 3, paragraph 1: [8] instead of [9]; P. 471, column 1, paragraph 2: red instead of blue LED; P. 471, Column 2, Paragraph 1: Aiming and listening instead of sending and listening. Jo Becker, DJ8IL O. K. Very successful issue (5/05). Keep it up! Christoph Dörle, DH9GCD HAM RADIO You will find the RADIO AMATEUR and the reader service at the same place as in the previous year: At booth 106 in hall A1. Sam from the QSL shop is also there to advise customers and take print orders. Bandwidth vs. occupied bandwidth According to 2 of the Amateur Radio Ordinance, the occupied bandwidth is the frequency bandwidth at which the mean power transmitted below its lower and above its upper frequency limit is 0.5% of the total mean power of the transmission. The occupied bandwidth does not mean the bandwidth of the filters used for the corresponding type of modulation (Postbox 5/05: bandwidth not to be adhered to?), But the high-frequency transmission spectrum is considered. In order to determine the occupied bandwidth, one must be able to determine the power in a frequency spectrum. This is certainly not that easy and almost impossible for an OM. For example, a narrowband FM signal or an AM signal with a large proportion of low frequencies and very few highs can have an occupied bandwidth of less than 2.7 kHz. On the other hand, an SSB signal with a transmission bandwidth of 1.8 khz, with the processor switched on and intermodulation by overdriving the HF stages, easily has an occupied bandwidth of over 2.7 khz. 0.5% corresponds to a reduction in performance of 23 db. Horst Twele, DK6AE Update Last year I updated from FesterFreund 5.0 to Husband 1.0. Now I have noticed that the new program made some unexpected changes in important modules. The access to flower and gemstone applications, which worked flawlessly under FesterFreund 5.0, was probably severely restricted. In addition, Husband 1.0 uninstalled many other valuable programs (including Romantik 6.9), whereas unwanted programs such as FußballBundesliga 2.1 or Formula 1 were simply installed. Konversation 8.0 can no longer be started and kitchen work 2.6 even causes a total system crash. I tried Nörgeln 5.3 to eliminate the problems, unfortunately without any success. found at cellar / roof campaign, fruit and shoe box. Only a few more weeks and you will meet again at Ham Radio in Friedrichshafen. There we accept archival gifts of all kinds at our booth, not just QSL cards and diplomas. What magazines, books, photos and the like we already have (and which documents we are looking for) can be found on our Ham Radio special page at Highest Time, in the basement and under the roof at home and at the club station To scrap stuff; High time to fill banana boxes and shoeboxes with everything that would be a shame for the Will s something with our gutter antenna? Drawing: Achim Purwin Garbage can, but only takes up space in the house; It is high time to talk to the widow or son of the old-timer Langgestorben and invite them to dedicate the radio legacy to the great archive in Vienna, where the treasures of decades from all over the world are kept ... and for the Ham radio weekend you should enter Saturday (June 25th) in your planning calendar now. At 12 o'clock in the Switzerland area we are presenting an epoch that was not only exceptional for Austria and its 2005 commemorative year: 1945 to 1955, from the occupied to the liberated ether. And if DRM is not yet a familiar abbreviation for you, you will find out firsthand when, where and how it starts. Contact: Documentation Archive Funk (QSL Collection), ORF / QSL, A-1040 Vienna, Argentinierstr.30A, Fax, Potentiometer It hurts to read the same mistakes over and over again in a trade journal. E.g. in the FA Postbox 5/05 under Strong calculation echo: potentiometer and that multiple times. At some point everyone writes it like that because they believe it will be written that way! And it has nothing to do with potency anyway. The adjustable resistance has always been written as a potentiometer, which can also be read in the Duden. Karl Hauser, DB6IG I am always happy to see how lovingly your magazine is made. Commendable: flawless German in grammar, spelling and syntax. Hartmut Warbeck (Reader Survey 2005) From our series Opposites: Reader Survey 2005 We in the editorial team go to great lengths to publish all contributions in the best possible German, and we also have a professional proofreader who puts the finishing touches on the contributions. Nevertheless, an error will slip through from time to time. In the case of criticism, however, this is not the case: We have been using the new German spelling since FA 1/03 and we do so consistently. This had led to controversial discussions among the readers at the time, see many Postbox pages from FA 3/03; we do not want to revive this discussion either. 542 FA 6/05

6 Postbox Accordingly, potentiometer is written with z, as you can see on page 762 of the Duden, 22nd, completely revised and expanded edition from 2001, published by the Duden editorial team. And the comparison with the word potency is not so absurd, because the grinder taps into a potential, according to Duden a measure of the strength of a force field. Potency in the broader sense stands for strength, performance. Both spellings always emerge from the Duden, the new spelling is marked in red. PLC and the shortwave radio operator wording. It doesn't get any better than that. A joy for the reader. Thanks also for the sources. I downloaded the PC Smith Chart calculator from the Internet, of course; it is also a good means of deepening and illustrating the topic you have taken up. The associated tutorial is relatively difficult to understand because of the English that takes a bit of getting used to, incorrect formula information, etc. and requires a bit of your own imagination, which is not a bad thing in itself. Karl Cornelius Thanks for the praise. But I have to admit that it was only the editorial work of Dr. Hegewald has also upgraded the contribution. At least as much thanks goes to him! Ingo Rackow, DF1OG radio, network cable and fiber optics instead of PLC! Progress instead of littered ether! Vacation time PIC-Programmer-Files from 1999 I bought a kit from you as a subscriber to the newspaper FUNK-AMATEUR. It is the PIC programmer with a new layout from the FA 2/99, S Now I have come to take a closer look at this part and assemble it. I found out that a part of the program on the diskette supplied was defective; it cannot be extracted. Could you kindly send me this file via? Dieter Sündermann, DD4KJ In the original FA article from 1999, which served as the basis for this kit, it was written that this improvement is based on the original assembly from 1995. The associated files can therefore only be found on the 1995 CD (in the Goodie95 path) and not on the 1999 CD! Due to the constant interest in this project, we have put all files on our website; additionally the now intangible PIC_C.ZIP and README.TXT (as well as PKUNZIP.EXE). Great contribution I would like to thank Mr Rackow for the excellent contribution antenna adjustment in practice (blue pages in FA 3/05 to 5/05) with a focus on the Smith Chart. For me the opportunity, as a long-standing Hewlett-Packard sales representative for high and ultra-high frequency measurement technology, to take up this topic again in my retirement, given the broadband to which the technology mutates in the course of a salesman's life. The diversity of the range of offers made such selective knowledge, an old salesperson experience, more or less wither away over time. It is all the more gratifying for me that your contribution, together with other, thematically related literature, has ensured a pleasant and desirable reversal process since retirement. The contribution itself: excellent in its precision, traceability and crooked time zone The appointment price question from April was short and sweet: Why could it be that VU / DL1QTR constantly misses its skeds with home, which are arranged on the hour? Our traveller's callsign indicates that he is in India. For this country, as for a few other countries, the local time does not correspond to a normal time zone with an integer difference in hours from UTC. The Indian time corresponds to UTC + 5:30 h or e.g. CEST + 3:30 h. In the German homeland it is always 30 minutes in between (and vice versa) on the hour in India. So if you ignore this fact you call past each other. The 3 25 received: Manfred Belak, OE3BMA Andreas Nagel, DJ2IB Matthias Prill, DG5LM Congratulations! Kettle price question How long can a kettle (see FA 4/05, p. 384) withstand an (HF) power of 750 W if there is 1 liter of water in it from room temperature (20 C) to just boiling (100 C ) is allowed to heat up? Any heat losses due to heating of the device, convection, radiation, etc. are neglected. We will raffle 3 25 people with the correct answer & the closing date is (postmark or date of dispatch). The winners will be determined in the editorial department to the exclusion of legal recourse. If you send the solution by (to, please don't forget to give your real address as well, otherwise your chance is gone. You can also try your hand at the soldering iron price question from FA 4/05 until clearly missed the envisaged solution. Therefore, the note that the formulation would have been more precise: Why is it better to use a variable transformer than to pull out the tip of an old-fashioned soldering iron whose tip is too warm for clean soldering? 05 543

7 Market With the SDR WR-G313e, signal demodulation and decoding take place in the integrated DSP. G313e PD software-defined receiver Frequency range: 9 khz 30 MHz (optional up to 180 MHz) Operating modes: AM, CW, FMN, LSB / USB, DSB, ISB SFDR: 95 db IP3: +8.5 khz Phase noise: 148 khz CW sensitivity: 130 dbm IF bandwidth: 1 Hz to 15 khz passband tuning, optionally with running BFO, notch filter PC interfaces: 1 USB 1.0 noise blanker recording function (audio signal, 20 khz IF spectrum) precise field strength display (S, dbm, µv) from 137 dbm antenna input: 50 Ω, SMA real-time spectrum scope with vector voltmeter and SINAD as well as THD tools High-quality audio technology and interesting accessory assemblies can be found at Eurofrequence Dierking. At the WiMo stand at Ham Radio, the program author will demonstrate the software specially tailored for Yaesu transceivers. Receiver for professional wave hunters The Australian manufacturer WinRadio Communications has added a new model WR-G313e to its successful range of PC-controlled radio receivers, which will be shown for the first time at Ham Radio in Europe. A consistent, seamless fusion of radio technology and PC control resulted in a receiver with top technical values ​​and a very favorable price-performance ratio, a combination that can hardly be achieved with conventional technology. The MSRP is 1199, which means that this professional radio reception system is also available to private users. SSB-Electronic GmbH, Handwerkerstraße 19, Iserlohn; Tel. (023 71), Fax NF at Eurofrequence The new Ham radio products from Eurofrequence Dierking in Hall A1 / 116 include the Shure 550V microphone and the GD2 with built-in preamplifier. The antenna switch GD73 for two transceivers and two antennas is also worth mentioning. Eurofrequence Dierking, Am Kreuznacher Weg 1, Pleitersheim; Telephone (), Fax -21; Full control for FTs Digital with analog TRX Bogerfunks Ham Radio's appearance this year is under the motto Digital will remain analog; On all three days there will be demonstrations at set times. The focus is on the compact modem ARD 9000, available for 355, which, in contrast to the ARD9800, is used exclusively for speech digitization with conventional analog radios. Another highlight is the SR-2000 Frequency Monitor with built-in triple super for the range from 25 to 3000 MHz. Info: Purchase: Bogerfunk GmbH, Grundesch 15, Aulendorf; Tel. (075 25) 4 51, Fax 23 82; Antennas for all cases New in the area of ​​multi-band antennas are the mobile antenna GPS-C MHU3 / FM and the clip-on antenna HX 2/70-FME for VHF reports. The former is a combination antenna for vehicle installation. An active GPS patch antenna with remote power supply is already integrated in the base. The 45 cm long radio radiator for 95 covers the bands 2 m and 70 cm with 0 or 3 dbd and can also be used for radio reception. The second-named, shortened duoband helix antenna for 2 m and 70 cm is about 15 cm long and has an FME connection. It is optionally available with N, BNC, TNC or other connectors. B. for 39.50. Reference: VHF reports, Jahnstrasse 7, Baiersdorf, Tel. (), Fax -33, ARD9000 Voice digitization modem Bandwidth: Hz Modulation type: OFDM, DQPSK with 36 carriers Symbol rate: 20 ms (50 Bd) Tone steps: 62.5 Hz AFC : ± 125 Hz IC base: AMBE2020 (coder, decoder) Error correction: Golay, Hamming Power supply: ma external; internal 3.6 V / 2000 mAh NiMH battery (optional) Dimensions (WHD): .5 mm 3 Weight: 350 g without battery pack This practical Peg Leg for FT-817 is a complete kit with laser-cut feet and V2A Screws for 12.50 available from Dieter Engels, DJ6TE, Elchinger Weg 6/2, Tel. (07 31), Fax -1 34; The vehicle antenna GPS-C MHU3 / FM (left) can be used for 2 m, 70 cm, VHF radio and GPS; Right clip-on antenna HX2 / 70. EU-compatible CB mobile radio device xm 3003 Market information The market pages are intended to provide information about new or interesting products for the readership and are based on information from manufacturers or dealers, which the editors cannot always verify. The specified sources of supply are not exclusive, i.e. the products presented may also be available from other dealers and / or at different prices. Red. FA SuperControl CAT Software is presenting three new, specially tailored software packages for the Yaesu transceivers FT-857, FT-897 and FT-817 this year. Satellite mode with Doppler calculation (also for transceivers that were not designed for satellite operation), real TCP / IP remote control with VoIP, visual band search, keyboard and macro CW keyer, and much more are functions that the author will address at the WiMo booth Answer is available. Info: Purchase: WiMo GmbH, Am Gäxwald 14, Herxheim, Tel. (07276) 96680, Fax 6978, CB for Europe With the xm 3003, the company stabo offers a CB mobile radio device in which the various channel tables valid in Europe are in are stored in the firmware so that a convenient switchover is possible at the push of a button when crossing a border. Reference: stabo Elektronik GmbH, Münchewiese 16, Hildesheim, Tel. (), Fax:, xm 3003 CB mobile radio device Frequencies: three national frequency tables, switchable: 80 FM / 4W + 12 AM / 1 W; 40 FM / 4 W + 40 AM / 1 W; 40 FM / 4 W CEPT Features: automatic ASC squelch, direct switching channel 9, LED display with channel, S-meter, P out Connections: six-pin microphone socket, 3.5 mm socket (external loudspeaker), robust trucker microphone Price: 149; 199 including slide-in bracket for car radio slot 546 FA 6/05

8 Markt OB m-two-element beam Frequency ranges: 3.770 3.820 s 1.7 3.500 3.550 s 1.7 Relay-controlled switched Free space gain: 3.8 dbd Gain above ground: 10.2 dbi at 30 m above ground, average ground conductivity, back attenuation: 18 db effective elements: 2 boom length: 11.00 m element length: 23.12 m turning radius: 12.90 m connection: 1 50 Ω coaxial mass: 85 kg wind load: 1246 km / h; 1.55 m 2 Price including 5 kW 2: 1 balun: 3799 in a nutshell Yaesu service To improve service in Germany, Yaesu Europe B.V. Service contracts concluded with a number of specialist dealers. Two years of RFW in Idstein The sales program of RFW-Electronics includes ceramic and mica capacitors, double-hole cores, Teflon braid and much more. Tel. () Even more optimal beams In addition to the OB11-5 already presented in FA 3/05 and 4/05, OptiBeam offers three more new antennas at Ham Radio: The five-band beam OB16, which has been expanded to 10.1 m boom length compared to OB11-5 -5, the OB13-6 extended to a six-band beam, which houses two elements for 40 m on a boom length of 7.9 m, as well as the monobander OB2-80 + for 80 m, optimized for the DX areas, with a relay-controlled switch between CW - and SSB area. OptiBeam Antennentechnologien, Thomas Schmenger, DF2BO, Rastatter Straße 37, Pforzheim, Tel./Fax: () Sale at Seicom The Swiss Seicom AG is selling the Remaining stock and the workshop equipment. Seicom AG, Aarauer Straße 7, 5600 Lenzburg 1, Switzerland, Tel. +41 (0), Fax Spider Leg Antenna The Hurricane Spider Quad is a two-element, three-band spider quad for 10, 15 and 20 m a favorable element spacing on all bands and thus greater profit. Compared to other antenna forms, this antenna is characterized by a flat radiation, especially since the wind load is lower than with a beam. If three separate feed lines are used, there are no effects whatsoever on the various bands, but single-cable feed is also possible. The antenna is delivered pre-assembled with finished wire loops and is therefore very easy to assemble. Reference: WiMo GmbH, Am Gäxwald 14, Herxheim, Tel. (07276) 96680, Fax 6978, Spiderquads, the middle piece in the picture below, are more profitable as a multi-band version than Boomquads. Hurricane Quad 20/15/10 m spider quad Frequency ranges: 14.0 14.35 MHz 21.0 21.45 MHz 28.0 29.70 MHz Gains in free space: 6.0 / 6.0 / 6.0 dbd Load capacity: 2 kw FM Transport length: 2.50 m Turning radius: 3.90 m Connection: 3 50 Ω coaxial permissible wind speed: 160 km / h Weight: 21 kg Material: GRP rods; Center piece of precision steel tube, welded and powder-coated Assembly time: 1 h for 2 people Price: 650 to: 599 Options: Extension kit 80/40 m; Tube extension for VHF-Yagi original construction: Liebfried Antennentechnik, Stuttgart The Acro-Bat from Ten-Tec, an accessory for hanging wire antennas, consists of a highly stable and UV-resistant Triex polycarbonate. It accepts RG58 or commercial chicken line such as CQ553 as a feed line. Price: 14.90 plus shipping. appello GmbH, Tel. (), SM / MW / 160 m receiving antenna Frequency range: 500 khz to 2.8 MHz Material: plastic-coated copper wire, base body PE impedance: 50 Ω Connection: N socket; Adapter to N or BNC for rotating operation included in delivery Dimensions: length 220 mm, diameter 75 mm, price: 97.40 amplifier assembly optional coil module for MW and 160 m In addition to the range for reception amateurs, BAZ Spezialantnen manufactures a coil module SM / for 500 kHz up to 2800 khz, which is operated with an active, adjustable push-pull resonance amplifier. Compared to ferrite antennas, the direction finding is not quite as sharp, but from 1.2 MHz the coil module reaches a higher induction voltage. Particularly good results can be achieved in the upper MW range and in the 160 m amateur radio band, which is becoming more and more interesting. The coil is built up in a symmetrical coil winding, whereby the coupling is led out of the center of the module. Special antennas BAZ, Lessingstrasse 21 d, Bad Bergzabern; Tel. (06343), Fax (); HB9CV from FA 4/02 The one from Ulrich Graf, DK4SX, in FA 4/02 on p. 394f. The demountable HB9CV antenna for 2 m described is characterized by its compactness and mechanical stability. This also makes it ideal for SOTA activities. It is now being manufactured by KN-Electronic and is available there and in the FA reader service for 34.80. Available from: FA reader service or online shop # 6999 or KN-Electronic, Ing.Klaus Nathan, DL2AZK, Robert-Koch-Straße 7, Neuhaus / Rwg., Tel./Fax (); The 2-m-HB9CV manufactured by KNE according to DK4SX is stable and can be dismantled compactly. The FUNK-AMATEUR editorial team and employees of Box 73 Amateurfunkservice GmbH are again represented this year at the same location as in 2004 at Ham Radio: Hall A1 Stand 106 FA 6/05 547

9 Electronics market The mobile data safe with a smart device makes it easier to handle several removable data carriers. Mobile Datasafe hard drive Hard drive capacity: 20 GB Interface: USB 2.0 Features: PC is not required to back up data, copying and deletion of individual files or entire folders, backup of the entire memory content, management of the file structures on Datasafe and connected devices Software: driver for Windows 98SE, Ulead Photo Impact XL SE, Photo Explorer 8.5 Basic SE, DVD Movie Factory 3 Suit, PC Inspector smart recovery Power supply: LiIon accumulator 750 mah for 2 to 3 hours of operation, power supply via the supplied plug-in power supply possible Scope of delivery: OTG 20 GB, belt pouch, user manual , Driver, power supply Dimensions (WHD): 79 mm 69 mm 22 mm Weight: 135 g Price: 249 MSRP Data safe for on the go With the Mobile Datasafe OTG 20 GB from Hama, Conrad presents a mobile hard drive that can store the information stored on the connected removable media without the help of a computer or notebook.The device imports as a portable control device, e.g. Images from a digital camera via the USB interface, add music to the MP3 player or save data from the USB stick. The lightweight device, which will be available from May, functions as a so-called master that takes on many tasks that are normally carried out by a PC via USB. Available from: Conrad Electronic, Klaus-Conrad-Str. 1, Hirschau, Tel. (01 80), Fax (01 80), radio learns to see The Hessian broadcaster Hit Radio FFH will probably be the first German radio station to introduce visual radio in the summer. Since mid-2004, Nokia and Hewlett Packard have been experimenting with this service in Germany. A few weeks ago it was put into operation for the first time in Helsinki. In parallel to the FM radio program, accompanying information should be available on many Nokia mobile phones in the future: voting on music tracks, news and pictures of the hit currently being played, and much more. Regional weather information, traffic jam reports and music downloads are planned. Broadcasting information: Hit Radio FFH, FFH- Platz 1, Bad Vilbel, Tel. (0 69), Universeller Rechenzwerg The core of the panel PC developed by taskit is the tried and tested 386EX card. Often required interfaces have now been integrated directly on the module, so that no peripheral cards are required for connecting floppy, IDE, LCD, MF2 or matrix keyboards. The industrial PC, which is available both as a finished device and as a built-in variant, is therefore particularly suitable as a small-format control unit. Reference: taskit Rechentechnik GmbH, Seelenbinderstr. 33, Berlin, Tel. (0 30), in a nutshell Stern-Radio Berlin On the occasion of its 14th anniversary, Stern-Radio BQG mbh invites you to a very special museum exhibition at Liebermannstraße 75, Berlin-Weißensee from the 17th to the 17th . Mondays to Fridays from 10 a.m. to 6 p.m. and on the weekends from 10 a.m. to 2 p.m., a wide range of over 250 radio and television sets can be viewed in addition to the clear presentation of the company history of VEB Stern-Radio Berlin from 1951 to 1991. Thanks to Nokia and Hewlett Packard, listening to the radio should now also offer something for the eyes. Panel PC 386EX Industrial PC Memory: 1 8 MB Flash, 1 MB SRAM (battery-supported) CPU: Intel 368EX (Embedded Processor), 33 MHz Interfaces: 4 serial, I 2 C, parallel, IDE, AT / MF2 keyboard, Matrix keyboard Operating system: FreeDOS (compatible with MS-DOS 7.1) Operating voltage: 7.5 40 V Dimensions (BH): without housing 175 mm 106 mm Prices: with 2 MB Flash in housing 783 without housing 605.52 The AccuSense runs the Sensor threads together. Control center for sensors ATM2400 measuring point query system Interfaces: 36 for measuring point connection, USB for PC coupling Software: AccuTrac V5.0 for graphic and tabular evaluation Air flow sensor UAS1000: three models for 0.15 2 m / s, 0.15 5 m / s or 0 , 15 10 m / s; Accuracy ± 5%; Ambient temperature 0 70 C; 5 m shielded supply line thermocouple UTS1000: C; Accuracy ± 1 C Price: ATM2400 without sensors 2685.40 Nucletron Electronic recently started offering the AccuSense ATM2400 developed by Degree Controls Inc., with which up to 36 sensors can be queried simultaneously. This means that air speed as well as air and surface temperatures can be recorded with just one device. The software supplied recognizes the types of sensors connected and allows threshold values ​​and measurement times to be set. If several devices are cascaded, up to 100 measuring points can be connected. Reference: Nucletron Electronic Vertriebs GmbH, Gärtnerstr. 60, Munich, Tel. (0 89), Fax -11, FA 6/05

10 Literature Friese, W .: Sfericsempfang, Volume 1 Sferics are electromagnetic impulses whose origins lie mainly in lightning events. As a result of the special propagation conditions in the long-wave range as well as complex geophysical processes, the signals achieve very large ranges. In doing so, they experience a pulse shaping that is characteristic of the respective type of propagation. In his book Sfericsempfang, Volume 1, Friese describes these processes and thus provides the necessary basics for practical signal interpretation. Furthermore, the reader is made familiar with different antennas and different functional levels of suitable receivers. A wealth of circuit applications based on the UAP and the flexible ELF / VLF receiving system then offer him the opportunity to set up a wide variety of receiving devices. Both simple hand-held receivers for acoustic perception and modules and devices for PC-supported recording are taken into account. The circuits in the practical part are tailored to the reception of Sferics signals with a dispersive character, such as Tweeks and Whistler. Receivers for Schumann resonance waves are reserved for a planned volume 2. -rd Wilhelm Herbst Verlag Dessau Pages, 16 ISBN Görrisch, D .: Do-it-yourself GPS The possibilities of commercially available GPS receivers can be increased considerably by using their PC interface and various additional devices. The book describes the required procedure in a recipe-based and practical manner, gives numerous tips and provides the necessary software on the CD-ROM supplied. Recorded waypoints and routes can thus be edited and saved on the PC and displayed in your own maps. All the necessary steps are described in detail. In addition, Görrisch gives insights into conventional navigation methods, DGPS and the technology of car navigation systems. A few pages are also dedicated to APRS and the popular TinyTrack module. The book contains building instructions for the following devices: GPS receiver based on an inexpensive ready-made module, universal NMEA display using a standard LC display, simple repeater for supplying indoor spaces with GPS signals, vehicle voltage converter for mobile operation of GPS handheld receivers. Now in its third edition, the book is equally suitable for beginners and advanced GPS users. -rd Franzis Verlag GmbH Poing Pages, 19.95 ISBN Devoldere, J., ON4UN: Low-Band DXing As in the previous editions, the 16 chapters contain a variety of information on propagation conditions, transmitting and receiving equipment, antenna calculation programs, feed lines and Adaptation, receiving antennas, dipoles, vertical antennas, large loops, group antennas, yagi and quad antennas specifically related to the 160, 80 and 40 m band. One chapter each deals with low-band dxing from small properties and with contest operations. The extensive, detailed list of sources with over 1000 references is also very valuable. The completely revised fourth edition contains, in particular, new material for receiving antennas and vertical arrays. Another novelty is the enclosed CD-ROM, which not only contains the entire book as a PDF with search function, but also ON4UN's Yagi design software, many other programs and almost 2100 images. An MPEG film over 6 minutes long, Amateur Radio Today, impressively shows the emergency radio in various situations. Although this book is written in English, it should be required reading for every antenna builder and radio amateur interested in DX. -dk1kq ARRL Newington Seiten, 34.50 FA-Leserservice # 2545 Sontheimer, R .: Audio circuit technology In the multimedia age, many technical devices are only used without knowing what processes are going on inside. One of these areas is audio technology. Therefore, when describing all the individual components, the author awakens an understanding of what actually happens in them. This includes knowledge of qualitative fundamentals such as noise, hum, distortion factor as well as knowledge of the components used or individual standards. The drafts are parallel to the theory. One chapter describes important basic circuits with the operational amplifiers often used in modern audio circuits. The device concepts presented in the book with circuit diagrams, layout suggestions and parts lists such as preamplifiers, filters, power amplifiers and power supplies, which also include special and additional circuits à la compander, mixing consoles, level meters, base width regulators, headphone amplifiers, limiters, are for use in hi-fi as well as ideally suited in music systems. Tips and tricks, including for troubleshooting, complete the circle. If you are interested in the paths of language and music from the sound carrier to the loudspeaker, this book offers a lot of background knowledge. -red Elektor Verlag Aachen Seiten, 34.80 FA-Leserservice # 1805 Rauhut, M .: SMD practice for hobby electronics. Can you still remember the switch from tube to transistor technology? Some of the problems that arise can also be identified with the introduction of surface-mounted components, or SMD for short. But that need not be. While the small dimensions caused problems with the first transistors, this also seems to deter many amateur electronics engineers from using SMD components, which only have stubs or no connection wires at all. The industry has been using these designs for a long time, so that in the meantime many technically interesting components have also been developed for radio amateurs and hobby electronics. This book therefore familiarizes you with SMD technology from the ground up and takes away any skepticism about the small parts. With the SMDs it is not about a completely new, but only about a somewhat more sophisticated soldering technique. And the author gives them with the help of over 100 pictures, tips and tricks, so that it should be easy for anyone interested to use these components, which are profitable from an HF point of view, even with a simple soldering iron and the right process, but the book also offers specific construction projects. -red Verlag für Technik und Handwerk Baden-Baden Pages, 9 FA Readerservice # 1550 FA 6/05 549

11 Company New high-bay warehouse and new shop at Reichelt Elektronik Ordered Delivered Enthusiastic. This motto of the high-tech company Reichelt Elektronik says it all. At the celebration of the inauguration of a modern high-bay warehouse and the new shop, signs were set and, as always, enthusiastic audiences with a technical interest. Company owner Angelika Reichelt welcomed numerous guests to the inauguration. Angelika Reichelt, who has been responsible for her company for 15 years, has made Reichelt-Elektronik one of the leading mail order companies for electronics and computers. The success can not only be seen in increasing sales, but is also shown by the high level of employee identification with the company. Angelika Reichelt's company philosophy is: Satisfaction, motivation and identification of the employees create the high creative potential that success requires as a basic requirement. Team spirit results from the involvement of your employees in solving problems and in decision-making processes. With the inauguration of the new building on May 12, 2005, the company is consistently pursuing its strategy in order to position itself at the top of the highly competitive electronics market. Articles from electronics, PC and network technology are moved, sorted, packed and dispatched over an area of ​​8000 m 2. Even tougher laws apply to the retail business. It is quite an art, in addition to countless shipping orders, to complete the many shop orders in the shortest possible time and to serve the customer directly at the counter from the wide range of articles. Like the shipping customer, the customer can also access the same warehouse in the shop, i.e. buy the desired goods from the catalog in real time at the shop counter. However, before the customer holds their goods in their hands, they have come a long way. Whether for the store, domestic shipping or worldwide export, the items come from one of the more than 1000 pallets in the 15 m high rack warehouse or from one of the containers in the fully automated small parts warehouse, before they reach the shop or the automatic packaging line. Your way leads over a total distance of 4 km with pneumatically set points, congestion areas, inclines and declines. The Reichelt team speaks of the Frankfurter Kreuz with pride. In order to offer the on-site customers a special service, a lot has been thought of. When entering the new shop, the view immediately falls on the customer terminal and the display boards with the customer guidance system. Orders can be placed at six checkout areas and recorded in the system. Then the order is put together exactly behind the scenes and driven into the shop area as if by magic. There, the customer is shown the availability of his ordered goods via large displays. Those who want to avoid waiting times can pre-order their goods via the Internet or the in-house call center and use the free customer card to shorten the waiting time to minutes. On site, you can retreat to the café corner to talk shop with like-minded people or to take in the stylish ambience of the new shop. The now 220 employees, who are led to the right place at the right time by an intelligent personnel management system, to take care of the selection, purchasing, order processing, counting and picking as well as the packaging of the individual items ensure that everything runs smoothly. Shipping customers also benefit from the extended system. In this way, you can usually get the goods ordered by 2 p.m. the next day and at no extra charge. Incoming orders over the Internet are immediately taken over by the system, which shortens the throughput times considerably. As in the previous Reichelt projects, the employees from development and technology contributed their know-how with great enthusiasm and developed and built special controls especially for this application. The software required for this was also written in-house. It is therefore obvious that the maintenance of this high-tech logistics system is largely carried out by the company's own technicians. With the rapid development that one is used to at Reichelt Elektronik, it will be interesting to see how the company will continue to expand and with which innovations it will inspire its customers. PT Big crowd at the inauguration of the new shop (above); The new warehouse is 15 m high and gigantic, which saves time for mail order and shop customers (left). Photos: M. Gust (2), Spektrum FA 6/05 551

12 Funk Noxon: Wireless web radio for the hi-fi system Dipl.-Ing. WOLF-DIETER ROTH DL2MCD web radio and MP3s were combined with squawking computer speakers or MP3 players. But now you can enjoy both elegantly without complex wiring or transferring over the hi-fi system. There have been some expensive, sometimes annoying solutions for bringing web radio and MP3s to the hi-fi system for a long time. One is to mess up the living room with a discarded computer. Then he stands in the corner and makes a noise; How to stow the mouse and keyboard and then also display a picture remains open. If you want to make it a little more bearable, you can use a living room-compatible computer in the form of a barebone computer or as a multimedia device. However, there remain the problems with wireless mouse and keyboard and, at least for web radio, the question of how to bring the Internet into the living room. With a network cable through the wall or better by radio with WLAN adapters? In the meantime, there are also amplifiers with an integrated Ethernet connection, e.g. from Onkyo the TX-NR5000E for 5500 or the TX-NR801E for That is more expensive than any PC and also not really satisfying: Not every station can be received because many stations expect their website to be called up with a browser in order to also view the To see advertisements. Other stations can only be heard in the real player or even switch off after 35 minutes, like the programs of West German broadcasting [1]. Ethernet in the living room? What is even more annoying, however, is that these expensive solutions also lack their own display and an Ethernet cable has to be laid. The wireless connection via WLAN is difficult here because the 552 FA 6/05 most WLAN components expect a computer as a counterpart and not just a disdainful Ethernet socket. A separate computer is also required here for the MP3 collection. So you don't just get poorer than before. MP3 jukeboxes with a recording function such as the Terratec CAR4000 [6] have so far been unattractive in terms of price at around 500. Then mobile MP3 players are more likely to be plugged into the stereo system. It still makes the most sense to put a discarded laptop with a WLAN card on the hi-fi system and use it for web radio and as an MP3 archive. But then the convenience of being able to control the music by remote control is missing. Infrared remote control, power supply unit, audio connection cable and the Noxon device itself: This turns the hi-fi system into a web radio jukebox Photos: DL2MCD (2), factory photo (1) Technical data Data- 1, 2, 5.5 or 11 Mbit / s, transfer automatic setting file Internet radio (streaming MP3), formats MP3 (320 kbit / s), ID3 V1.0 / 2.0, M3U, PLS, WMA-9 (320 kbit / s) connections Line-Out 3, 5 mm jack, power supply network WLAN, ad hoc (peer to peer) network WEP encryption, security 64/128-bit key Features LC display, IR remote control, built-in WLAN antenna, firmware upgrades via WLAN The Noxon from Terratec [2] is an interesting and not even expensive alternative at just under 130. This is a silver box that on the outside mainly consists of a large, blue, three-line display that is easy to read from the armchair. The device is controlled with a small infrared remote control - all you have to do is connect power and an amplifier. No ethernet? No, no Ethernet, because a WLAN interface is already built in for this. The Noxon can play MP3 formats and soon also WMA.AAC and OGG are also planned, even if it is not yet clear whether the current hardware allows this or a successor model. MP3pro as a preliminary stage of AAC with its non-Hi-Fi-compatible bit rate of less than 64 Kbit, however, is already outdated and is no longer implemented. Real as a proprietary protocol is also left out. Integration in WLAN networks The Noxon can either be married ad hoc to an existing computer with an Internet connection and WLAN card, or it can hook into an existing WLAN as an independent device. That sounds awesome! But how well does it fit into a network of WLAN, DSL and various computers in practice? Especially when it is closed, using fixed IPs, registered MAC addresses and encryption? No problem at all, the manufacturer assures. But it is not that simple. After all, the Noxon's MAC address is printed on it. Entering the fixed IP is more difficult; deleting the unsuitable default is only possible after a few searches. Once the network has been found, the connection remains even after switching it off and on again. The web radios stored in vtuner [3] can now be accessed using the remote control. Although these are only a fraction of the actually existing stations, there are already several hundred stations sorted by country, some of which also transmit at 128 kbit / s in a thoroughly audible quality. Most of them, however, cannot be described as Hi-Fi at 48 kbit / s and are more reminiscent of shortwave reception. But some of the stations with a high bit rate also sound miserable because they are overloaded or have other technical problems. Listening to almost everything over the network However, the web radio can keep up with shortwave in terms of sound. If you have no possibility for a good outdoor antenna, strong radio interference or no alternatives such as satellite reception, you can listen to stations from distant countries via web radio. Switching through the available stations is also fun, since in addition to the station name there is also an RDS

13 radio-like line displays additional information. Incidentally, the available channels are not limited to classical music or word programs. In addition to curiosities such as the sound of TV channel 11 in an American city or the sound of webcams, the USA also has a lot of fire and police radio, the NOAA weather radio of larger cities and radio traffic from several airports as web stream on the Internet. While listening was strictly forbidden in Germany for a long time, it is not an issue in the USA. You can also search for genres instead of countries. The music styles are shown neither in German nor English, but only in Spanish. It is pleasant that, in contrast to most PC players, the level of fullness of the data buffer is displayed in addition to the strength of the WLAN reception. If the data from the transmitter arrives too slowly due to network congestion, own downloads or server overload, you can recognize the impending sound loss before the music starts to stutter. Own music server After listening to the Internet radio extensively, the question then arose: How do I access my MP3 collection? The Noxon should also be able to do that. All you have to do is run a UPnP server on the computer with the MP3s. This is a universal plug-and-play music server to which e.g. Twonkey Vision [7] a plug-in for Winamp that did not work. Terratec therefore recommends the Musicmatch Jukebox [6] in advance: A tried and tested, practical program with which you can comfortably generate correctly labeled MP3 files from CDs [4]. As a pure MP3 player, on the other hand, it is a bit big and memory-consuming. But once the UPnP server is up and running, Musicmatch Jukebox can be closed again. You could even continue to work with the music server computer. A CD-ROM is also available, but it was not needed for commissioning. The software contained on it can be used to update the firmware of the Noxon. The device could become even more powerful in the future. MP3s in Hi-Fi Now all pieces of music from the saved MP3s appear in the Noxon. However, if you have a very large music collection, it becomes inconvenient to scan through the tracks. It is also sometimes irritating that the first track starts automatically and that individual tracks go silent again after playing, only entire albums run through without interruptions. The device in the current version does not yet offer a playlist or even a shuffle function. But you can access your MP3 music collection on the stereo system as desired, without having to put an expensive or noisy device in the living room. In addition, the Noxon offers good audio properties better than many onboard sound cards, which mix the music with noise from inside the computer. It remains to be seen whether web radio is really a medium for daily listening where the internet infrastructure is not designed for such really fast applications. But the Noxon is the first device that implements what other manufacturers have promised us for years at a reasonable price. Let me just remind you of the Kerbango from 3com, which never got beyond a design study, and the Streamium from Philips that actually exists but is difficult to get in Germany. The latter does not really meet the needs of the buyer: Since a WLAN connection is required, it is pointless for on the go, too big for the kitchen and superfluous in the computer room anyway. Noxon: no radio receiver Terratec has achieved with the Noxon what hi-fi manufacturers such as Onkyo with their network tuners are visually much more impressive, but technically not as efficient: the coupling of computer and stereo system. Thanks to radio technology, this is also possible without pulling the strings and interfering noises from hum or interference such as when forwarding laptop with WLAN and MP3 / WMAs PC with MP3 / WMAs Hi-Fi system WLAN router IR remote control Internet Integration of the Noxon: it gets wirelessly via WLAN the MP3 files stored on a PC as well as web radios. Only power and a hi-fi amplifier need to be connected by cable. Selection of the web radios sorted by country using four buttons. Playback of an MP3 music file with variable bit rate. Coupling via WLAN to a sound card output in the living room. If more web radio providers can be listed in the standard used by the Noxon, the number of stations will also increase. Terratec developed the Noxon together with a Swiss manufacturer; In the future there will also be a model that has cinch sockets and an SPDIF output as well as a wired Ethernet input. Microsoft DRM10 and WPA encryption will also be possible in the WLAN, at the moment only WEP is offered. The only danger that threatens the device in the long term are the German public broadcasters. So far, they have only appeared in the Noxon with Deutschlandfunk and Deutschlandradio, but they could also feed in their remaining programs and make the device chargeable. From 2007, television fees will be due for computers with Internet access, but no broadcasting fee has yet been planned for pure web radio receivers such as the Noxon. Of course, from April 2005, when the new fees and conditions of the Society for the Exploitation of Ancillary Rights (GVL) made German web radios unable to make music, German-speaking web radios had a much less sustained tendency. But then you can still fall back on web radios from Kenya or Azerbaijan. Literature [1] West German Broadcasting: WDR Live Streaming. [2] Terratec. Homepage: [3] vtuner: Homepage. [4] Roth, W.-D., DL2MCD: From the groove to the silver disc. RADIO AMATEUR 52 (2003) H. 4, S; H. 5, S [5] Roth, W.-D., DL2MCD: MP3 recordings directly on HD. FUNKAMATEUR 51 (2001) H. 5, p. 467 [6] Musicmatch Jukebox: Homepage. [7] Twonkey Vision: Media Server. FA 6/05 553

14 Amateur Radio Visiting India's Radio Amateurs Delhi Nepal HENRYK KOTOWSKI SM0JHF / VU3HKE India Bangladesh India's population is growing steadily and is already exceeding a billion. There are radio amateurs in India in good numbers, but very few are allowed to indulge in their hobby. I got to know several of them in different parts of this vast and diverse country. Now I would like to share some of my impressions with the readers. Arabian Sea km Panaji Chennai Sri Lanka Andaman Port Blair Nicobaren India, like Germany, consists of a network of different federal states. There are 28 states and seven other special territories. At least 15 absolutely different languages, apart from English, are officially permitted, but there are several hundred other dialects. dete. The decades of European influence, which also today attracts many tourists, is still more noticeable there than in any other part of India. I joined this general travel trend and visited Goa for two weeks in December 2002. Only a few active radio amateurs can be found there. In the center of the capital Panaji, however, the roof of Didier, VU2DM, with some self-made antennas immediately catches the eye. However, there are taller buildings in the immediate vicinity; the interference levels emanating from them are unmistakable. So it is actually not easy to make DX connections from such a location. Didier still earned the DXCC diploma, but at the same time he points out that collecting the necessary QSL cards required even greater efforts. The VU-QSL office does not work particularly reliably; while direct mailing and finding correct addresses or QSL information in general was almost impossible in the pre-Internet era. Didier, VU2DM, lives in the center of Panaji, the capital of Goa. Some of the diplomas he has worked hard for can be seen on the wall. Another amateur radio station in Goa that I visited is known for the fact that its operator installed various devices and antennas himself. Cyril, VU2CY, is a retired engineer who returned to his home state after an extended stay in Mumbai. He had dismantled his impressive quad antenna and his actual transceiver was in a service shop. That's why Cyril was playing with a tiny QRP transmitter on wire antennas when Visits to Goa My first points of contact with India and the local amateur radio scene took place in the small state of Goa. This area was a Portuguese enclave for several centuries until 1961, before the Republic of India emerged. 554 FA 6/05 Cyril, VU2CY, on his self-made CW QRP transmitter Srikanth, VU2SBJ (right), with Somashekhara, VU2NJN , in front of his house in Manipal (Karnataka) I showed up unannounced, but warmly welcome, at his place. Hosting visitors, even unexpected ones, is good form in India. Detour to St. Mary s I was once again surprised by the Indian hospitality when I traveled by train to the holy city of Udupi, where a group of local radio amateurs was waiting for me. Srikanth, VU2SBJ, assisted by Somashekhara, VU2NJN, and Laxminidhi, who had just successfully passed the amateur radio exam and was now patiently waiting for the permit, looked after me the whole next day and showed me the tiny, uninhabited island of St. Mary s, im Arabian Sea. A multi-OP activity for the IOTA program took place on this island in 2001. Running DXpeditions is neither easy nor common in India. In order to be able to transmit from this island, permits were required from both local authorities and the superordinate federal authority.

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