[AMRadio] AM audio problem

Ed Sieb esieb at sympatico.ca
Wed Dec 31 13:55:19 EST 2008

Sounds like an ultrasonic oscillation.
Some extra bypassing or extra  suppressor resistors in series with the grids (or plate) of
the first 12AX7 might be in order.


More information about the AMRadio mailing list

This page last updated 21 Feb 2018.