Quote:
Originally Posted by old_coot88
Verrry cool stroke of Yankee ingenuity there.
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Thanks, but I decided, as I have a ton of mil spec submini tubes, 5647 diodes, to use them instead. These diodes' heaters run at 150ma, and I passed their wire leads thru the tube socket pin holes and soldered those leads to the tube socket terminals. And I didn't have to touch the alignment, as the FM detector zeros out nicely (a ratio detector).
I also had to replace the old power cord. But I used a 3 wire flat cord like the original, except the color was different (it was a power cord for an electric lawn mower). The center wire of the 3 became the capacitive coupled FM antenna, like what Dewald did.