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I just noticed you comment about intercarrier buzz. I got it pretty well out of the sound on the first one that restored. Not completely, just pretty good.
It seems that is one problem with all of these early sets-all brands), either with a ratio detector or the pentode detector. You could probably do better if you completly re-aligned the set, but I do not have time for that at present.
I have a couple early 1950s RCAs with the limiter, discriminator setup which I hope to get to soon. I want to see how this works. (That these sets used this circuit is supprising considiering the fighting at that time between Sarnoff and Armstrong).
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