Magnum 257 problems
Posted: Saturday 1st Nov 2008, 9:40
I got an older 257 Orange display model with dual 1969's. I have about .5-1 watt TX and broken up to no RX. Voltage Reg. SB778 has 13 volts . 7808 regulators give me 8 and 13volts. I get a chirping sound when I TX. I don't have any RX from a radio next to it.