TopBand: RE:Rx amps/noiseless feedback

[Peter Chadwick]

The Anzac patent on noiseless feedback should have run out by now. I
can't find my copy of it, but it's pretty old - back in the 70's. I
guess one point to bear in mind is how the amp responds when the tx
antenna is radiating. If you don't really need a noise figure in sub 3dB
area (which I doubt on 160), you could consider using a tube!

73

Peter G3RZP
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