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RE: Frequency, etc

Posted by Lew (A) on March 23, 2021 at 13:14:12

In Reply to: RE: Frequency, etc posted by fredtr on March 23, 2021 at 10:24:58:

Thank you for your excellent ideas. It is interesting to me, because I have an older schematic, dated 1977, in which the value of that ceramic capacitor is 290 pF, not 470 pF. Both of my amplifiers in both positions have a 470 pF capacitor in place. In addition, that is the one part that I have not double checked in recent months. And I need to take another look at that. Also, I had planned to just try substituting R 201 with a 10 K resistor as shown on the 1978 schematic I provided. Right now I have 22K, as I mentioned. As to a lower noise diode, I am using UF4007's, instead of 1N4007's. What would you use after having tried that?

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