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Tony Langdon | Holger Granholm | Re: Thats Odd |
March 5, 2018 7:06 PM * |
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-=> Holger Granholm wrote to Tony Langdon <=- HG> We had a similar problem. The TV-sets manufactured in the 1950-1960's HG> had an IF-frequency of 21 MHz. Obviously we had to avoid working on the HG> 15m, and to some extent 40m bands, since 7 MHz * 3 = 21 MHz. That would be a problem. Also some 2 way radios have an IF of 21.4 MHz. Fun if there's some 15m activity nearby! HG> Luckily, in those early TV days, they were not transmitting programs HG> 24h/day, so we could operate ham radio outside TV-hours. Here, that was after midnight. |
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AMATEUR RADIO / HAM RADIO 
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