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OZ Februar 2002 Hovedbestyrelse: Kreds 1: Erik Borgård Pedersen, OZ1FBV Gillesager 156, 2

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OZ Februar 2002 Hovedbestyrelse: Kreds 1: Erik Borgård Pedersen, OZ1FBV Gillesager 156, 2 - stort og bredt udvalg i: Værktøj Måleudstyr Elektronik-komponen- ter 15.000 varenumre på lager til levering fra dag til dag. Men vi er on-line med nogle af Europas bedste elektronikdistributører, og det giver dig adgang til mere end 50.000 varenumre. Vi leverer netop det antal, du skal bruge - hverken mere eller mindre. Selvfølgelig uden gebyr! AARHUS RADIO LAGER A/S A.R.L. TRADING A/S SINTRUPVEJ 26 · Postboks 1550 DK-8220 AARHUS-BRABRAND TLF. 86 24 64 22 FAX 86 24 64 33 Annonce Betafon med mindre I har modtaget nyt materiale (senest d. 25. januar) så gentagelse af annoncen fra januar Tidsskrift for amatør-radio 74. årgang. Februar 2002 Udgivet af eksperimenterende danske radioamatører 2-2002 Hovedredaktør og ansvarshavende (HR): Flemming Hessel, OZ8XW Indhold Knud Rasmussensvej 4 7100 Vejle, tlf./fax 75 83 38 89 62 Redaktionelt E-mail: [email protected] Fredelig sameksistens eller ... Teknisk redaktør (TR): Sven Lundbech, OZ1AWJ, OZ7S Egerupvej 11, Bringstrup 65 Spektumanalysator 4100 Ringsted, tlf. og fax 57 61 30 10 7. del af OZ1DV’s konstruktion. Denne gang omhandlende strøm- E-mail: [email protected] forsyning og metanisk opbygning Hertil sendes alt teknisk stof Amatørannoncer og abonnement Radioamatørernes Forlag ApS, EDR 70 Efter licensprøven Klokkestøbervej 11, 5230 Odense M En ny serie i OZ. Vi lægger ud med temaet: “mellem sation og tlf. 66 15 65 11, kl. 10.00-14.00 antenne” Annonceafdeling: Carsten Brendstrup-Hansen, OZ3BH Blomstervænget 11, 2800 Lyngby 74 16 vindings helix og 19 element yagi: En sammeligning tlf. 45 87 16 56 Hvad er bedst til satellitbrug. OZ1MY har lavet en sammenligning E-mail:[email protected] mellem 2 antenner SPALTEREDAKTIONER: Contestredaktion: Peter Vestergaard, OZ5WQ 76 Serieforbundne dioder i strømforsyningen Vestervej 74, 4960 Holeby OZ5RM har oversa en artikel fra RadCom HF-aktivitetstest: Poul H. Lund, OZ1BJT Vegavej 17, 7100 Vejle 77 Rettelse Diplomredaktion: 12 cm RX converter OZ 11/2001 Jens Palle Moreau, OZ5MJ Jægerbakken 13, 5260 Odense S, tlf. 66 15 02 44 DX-redaktion: Fra andre blade Bo Søgaard, OZ8ABE Findes side 69, 73, 75, 87 Kettegård Allé 9 2.tv., 2650 Hvidovre VHF-UHF-SHF-redaktion: Spalteredaktionerne: Svend Erik Lindberg, OZ8SL Ellevej 6, 4623 Lille Skensved 78 Contestmanager og HF-aktivitetstest VHF-UHF-SHF-contest: 82 Diplommanager Verner Topsøe, OZ5TG 84 DX-nyt og frekvensforudsigelser Lundumskovvej 13, 8700 Horsens IT-spalten: 87 SWL-spalen Leif Aaen, OZ1DWF 88 VHF/UHF/SHF-redaktionen Karupvej 85, Karup, 9300 Sæby 97 CW-hjørnet CW-hjørnet: 99 IT-spalten Jens Henrik Nohns, OZ1CAR Lærkevej 11, 7441 Bording 100 Rævejægeren SSTV-redaktion: 101 SSTV-spalten Carl Emkjer, OZ9KE 102 Det nostalgiske hjørne Søborghus Park 8, 2860 Søborg Det nostalgiske hjørne: Niels Chr. Bahnson, OZ7NB Experimenterende Danske Radioamatører: Vibehøjen 7, 6731 Tjæreborg 63 Foreningsinformation Foreningsredaktion: 63 Radioamatører Ellen-Sofie Schuldt-Larsen, OZ1CRY 103 Mest for de unge og yngre Spurvevej 22, 4943 Torrig Afleveringsfrist til OZ......................Marts April 104 EDR nyt Redaktionelt stof, spalteredaktioner, 105 HB-nyt afdelingsstof og amatørannoncer........22.2 22.3 107 Nyt fra afdelingerne Aflv. til postomdeling............................18.3 15.4 Stoffet skal være modtageren i hænde senest den 118 Silent key nævnte dato. 118 Læsernes mening Eftertryk af OZ´s indhold tilladt med tydelig 122 Amatørannoncer kildeangivelse. Erhvervsmæssig udnyttelse må dog kun finde sted med redaktionens og forfatterens tilladelse. OZ-spot Forsidebilledet: TRYK: PE-OFFSET & REKLAME 77 En forstyrrelsessag En oldtimer har problemer Tømrervej 9, 6800 Varde. Tlf. 76 95 17 17 Afleveret til postvæsenet den11. februar Redaktionelt Fredelig sameksistens eller …. Denne måneds redaktionelt handler ikke om bladet OZ, men om hvorledes amatørerne kommer ud af det med hinanden på båndene. Det er op til den enkelte, om han/hun vil følge de råd, båndplanerne anviser for brug af ama- tørbåndene. EDR har absolut ingen ønsker om at udøve nogen form for politivirksomhed, og fore- ningen hverken har eller ønsker magtmidler i den retning. Det blev fastslået på HB-mødet i januar, hvor hovedbestyrelsen fik forelagt en klage fra en gruppe SSTV-amatører, der føler sig generet på 80 meter, når der er test. Det er i de månedlige aktivitetstester, den er gal. ( og så vidt undertegnede kan læse ud af kommen- tarerne i forbindelse med juletesten, har der også været visse problemer under denne test). Området 3730 - 3740 kHz er i båndplanen afsat til SSTV trafik. Desværre er området også contestom- råde. 80 m aktivitetstesterne kører på 3720 - 3770 kHz. Fordi båndplanen angiver et SSTV område, har SSTV folkene ikke førsteret til dette område, ligesom contestdeltagerne ikke har førsteret til det område, de skal anvende. Er frekvensen optaget, må man ikke bare starte op; men jeg tror en del af problemet ligger netop der. Jeg har ikke kørt SSTV; men ofte lyttet på de QSO'er, der kører i SSTV området på 80 meter. Lidt større erfaring har jeg med contester, idet jeg tidligere var ivrig deltager i aktivitetstesen og igennem åre- ne også har været med i juletesterne en del gange. Når jeg kører contest, er formålet at vinde. Når jeg efterfølgende ikke har vundet - eller i det mind- ste har fået en topplacering - bilder jeg mig selv ind, at det er fordi det er hyggeligt at deltage, at jeg var med. Men når det går løs, så er målet altså helt klart. Vinde gør man ved at holde en høj rate af QSO'er. Ofte 3-4 pr min og til tider flere. Et kraftigt signal hjælper godt. Hvis du ikke søger efter stationer, så skal senderen helst være konstant i luften med opkald. Leden efter en tom frekvens er spild af tid - QSO-raten går ned. Defor træffes der hurtige beslutninger. Nogle sekunders lytning afgør, om frekvensen er ledig. QRM - herunder lyden af et SSTV signal (som for en fone contestoperatør lyder som QRM) i kanten af frekvensen med en sigalstyrke på S 5- 6 betyder i nogle situationer ikke noget videre for QSO-raten. Et opkald foretages, og giver det svar, så er frekvensen "min". Det hele kan have varet mindre end 20 sekunder. Nu har jeg bemærket, at SSTV amatørerne ofte er lidt langsomme, når de skifter fra telefoni til at sen- de et billede. Der skal sikkert foretages et par manøvrer, og der går nemt 10-15 sekunder hermed, og måske et minuts penge inden man opdager, at en tovlig contetsoperatør på eller nær frekvensen er startet op og ødelægger fornøjelsen. Når så den måske noget irriterede SSTV operatør kalder contesteren - det kunne sagtens være mig selv - og mere eller mindre venligt beder mig flytte, så fortsætter jeg uanfægtet med at kalde CQ-test, for jeg har kørt tre QSO'er på frekvensen, så jeg kom her altså først. Hvis man bare lader sig skræm- me af den første den bedste, så kan man jo bruge al tiden på at flytte rundt, og så vinder man ingen contest. En længere debat/forklaring tar' også tid og nedsætter QSO-raten. Bliver SSTV-manden ved med at brokke sig, og er signalet kraftigt, så flyttes senderen et par kHz - for kraftig QRM nedsætter QSO-raten. Er jeg uheldig, så lander jeg måske lige præcis der, hvor der oprin- deligt var en SSTV-QSO; men nu er ledigt, fordi den ene part er henne og bede mig flytte. Selvfølgelig kan det også gå ud over andre contestdeltagere, hvis man er hurtig på aftrækkeren; men her kommer reaktionen hurtigt og sjældent med sure miner. De andre kender gamet. Det er min påstand, at ingen operatør med vilje generer andre, men de to trafikformer trives tilsyne- ladende ikke specielt godt med hinanden. Jeg forstår udmærket, hvis begge parter bliver irriterede, men det er ikke mig eller EDR, der skal tage parti. Fredelig sameksistens på båndene skabes af brugerne. Kan SSTV folkene, når der er test, flytte trafikken til områder, hvor der ikke er test ? Det forbyder båndplanen jo ikke. Kunne man på længere sigt flytte SSTV-området eller contestområdet ? Den retfærdige løsning findes måske ikke; men hensigten med denne redaktionelt var blot at give begge parter en forståelse af, hvad der kan gå galt. Forhåbentligt til fremme af fredelige sameksistens på båndene. HR Stop press Umiddelbart inden redaktionen slutning fik HR meddelelse om at EDR’s æresmedlem tidligere redak- tør af OZ, OZ7F Helmer Fogedgård er død. En Silent key følger i marts OZ. 62 ___________________________________________________________________________ OZ Februar 2002 Hovedbestyrelse: Kreds 1: Erik Borgård Pedersen, OZ1FBV Gillesager 156, 2. t.v., 2650 Hvidovre tlf. 36 47 11 73 Kreds 2: Mogens L. Sørensen, OZ1ELY Sporegangen 12.1.th., 3000 Helsingør Tlf.: 49 22 06 31 Kreds 3: Michael S. Pedersen, OZ1CFT Skovvejen 8, 3700 Rønne Protektor : Chr. F. Rovsing, OZ1CR tlf. 56 95 72 49 Kreds 4: Landsforeningen eksperimenterende Danske Radioamatører EDR, Kenny Hagemann, OZ5KH Haraldsborgvej 89, 4000 Roskilde stiftet 15. august 1927 Tlf. 46 36 16 21 Årskontingent til EDR udgør 480,00 kr. incl. tilsendelse af “OZ”. Kreds 5: Ved indmeldelse betales et indskud på 50,00 kr. for tilsendelse af emblem m.v. Leon B. Johannesen, OZ1LD Holms Alle 17, 5800 Nyborg Landsforeningens kontor (kontortid 10-14): tlf. 65 31 31 18 EDR, Klokkestøbervej 11, 5230 Odense M, Postgiro 542 2116 Kreds 6: Telefon: 66 15 65 11, Fax: 66 15 65 98, E-mail: [email protected] OZ9QQ, Kjeld Egon Petersen Østermarken 6, Stevning http://www.edr.dk 6430 Nordborg Tlf.: 74 45 86 25 Landsformand: Næstformand Sekretær Niels K. Hansen,OZ1IKW Kenny Hagemann, OZ5KH Kjeld Majland, OZ5KM Kreds 7: Dyntvej 76 Haraldsborgvej 89, Lindbjergvej 8, Ejer Ruben Lassen, OZ1ENY Stenbjerg Kirkevej 85, 7752 Snedsted 6310 Broager 4000 Roskilde 8660 Skanderborg tlf. 97 93 86 11 tlf. 74 44 18 05 Tlf.
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