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Old 24th Dec 2018, 1:12 pm   #66
Philips210
Nonode
 
Join Date: May 2007
Location: Redruth, Cornwall, UK.
Posts: 2,562
Default Re: Chinese 1A2 Super Regenerative FM radio kit

Hi.

Yes, I was quite surprised to see the kit working albeit slightly modified. So rather surprisingly, the 1A2 should be OK for Band 2 frequencies.

The interesting thing about the kit is its outstanding quality through-plated hole PCB and it begs the question why make such a decent PCB if the circuit as it stands is not viable? I still think it may be possible therefore to get the original circuit working. I think part of the problem may be out of spec coils and the tuning capacitor. My 1A2 valve has considerable green corrosion on the pins but hopefully will clean off. The supplied valve holder is a decent ceramic type, nothing but the best, for low losses etc.

I've downloaded the Youtube video and I'm going to follow it carefully.

Regards
Symon.
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