> the RF gain control was not working at all. I found a pinched wire that was > grounded. This was the wire going to the cathode resistor of V-1. I fixed > this, and even put a new pot in there for the RF Gain. It works BUT.. all > you have to do is just barely turn it and it blanks out the front end. > Could one of the cathode resistors have changed value, canceling out the > work of the rf gain control? R-3 to V-1 or R8 to V-2? Or, possibly, C14 on > V-1 or C18 on V-2?
Just a silly-assed question, Ronnie - mainly because I don't remember... but is there an AGC control switch on the front of the SX-28? It should be ON. Without the AGC circuit being active, you could have the same effect - any signal would send the front-end to saturation. Happy New Year! 73 = Best Regards, -Geoff/W5OMR -- 7:56am up 2 days 14:23, 4 users, load average: 0.17, 0.65, 0.84
