Ron, Don thanks for the notes and explanation. I went back and set the U2 Pin 5 back to 3.8, monitored this voltage as I changed R1, did the AGC ON/OFF while I stepped down the voltage until I couldn't hear no difference at about 3.70vdc. RF gain back to normal. Much appreciated. take care. -- 73 Fernando N2FQ/NNNØJYM San Jose, CA <http://pages.sbcglobal.net/n2fq>