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Title: 829 Based AM Rig Post by: WA4WAX on September 26, 2015, 05:14:27 PM Designed for 10, but why not elsewhere?
http://americanradiohistory.com/Archive-Radio-News/50s/Radio-News-1951-01.pdf Matt Title: Re: 829 Based AM Rig Post by: N8ETQ on September 26, 2015, 07:51:24 PM Hey Matt, No "Technical" reason, guess the guy just needed 10. Although not as severe as WWII, there were shortages with electronic parts and tubes during the Korean Conflict. The 829 may have been the only jug available, 4D32's were scarce for sure. IIRC some Johnson V 2's shipped with 829's. I'm not sure if it had a big impact on the Collins 32V stuff, but I'm sure someone had headaches from it. 73 /Dan Title: Re: 829 Based AM Rig Post by: W3NE on September 26, 2015, 08:38:59 PM The author of the transmitter article, Stan Johnson, was a prolific author of beginner construction articles for Popular Mechanics before the war. It's not surprising that he would have exploited the 829, which was quite inexpensive on the post war surplus market, and especially in 1951, when 10M was hot. The very first radio equipment I built was described by Stan. It was a regen using the cardboard insulator tube from a D-cell for the coil form. Great guy! AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
Bob - NE |