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Adding AVC to Early Model 70 - Need Opinion
#14

Hi All

Sorry I didn't chime in sooner, I just saw this post this morning.

I'm pretty rusty on this, it's been years since I modified my 70's (3) to AVC.

Let's see: I used a 1N34 for the detector, removed the grounds from the IF and RF tube signal grids and ran them back to the 1N34 through a 2.2 meg, removed the original dual volume control and installed a 350K pot. for audio control and detector load. Converted the original 24 detector stage to a audio amp.

The audio fidelity is excellent. The RF gain is excellent. The "Plate detector" distortion is gone, which is the reason I did all this.

If you need the schematic, email me and I'll send it to you.

Ed


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Re: Adding AVC to Early Model 70 - Need Opinion - by Ed Locker - 03-15-2009, 09:26 AM



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