SolderSmoke fans will recall that for a long time I have been looking for the radio magazine article that propelled me into a receiver construction project that failed and left me tech-traumatized. I tried to build a solid state receiver back in high school. All I remembered about it was that it was direct conversion and varactor-tuned. And that I couldn't get it to work. I think the problem was in the oscillator.
Well, I think I found it. Chuck Adams and the qrp-tech guys were talking about a receiver project and someone mentioned the old Herring Aid Five, a receiver companion to the famed Tuna Tin Two. That got me thinking. The time of publication was exactly right: July 1976. I had just graduated from high school. This morning I renewed my ARRL membership and then immediately accessed the QST archives. Sure enough, the Herring Aid Five is varactor-tuned. That has to be it.
So this one is now definitely on my to-build list. I will finally get this receiver working. Sometimes projects take a long time... Thanks again to all those who helped me in this search.
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Glad you found your project in the end! I have looked at the 'Herring Aid' circuit quite a few times in the last couple of years since getting infected with the tuna can radio disease at Rishworth QRP convention. I have quite a selection of tuna can rigs, although no Herring Aid as yet. My receivers are 3 different versions of W1REX's Sudden Storm.
ReplyDeleteGood luck with the Herring Aid, a quick web search brings up quite a lot of information.
http://www.njqrp.org/tuna/herring_text.html#Introduction
72
Colin
M0CGH
How quaint, a BJT product detector :-).
ReplyDeleteHere's a reference to the BTTF (Back To The Future) Herring Aid:
So, don't be a crab. Get hooked up and fin-ish that flounder.
73.......Steve Smith WB6TNL
"Gone Fishin'"
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