T/R Bias Relay Board

Includes Resistor on board for self bias. Must use a soft key Internal to amp or external. Rf out – output coax to output so-239 B- bias line Ct – bias line V- – 120 vdc V+ + 120 vdc Rf in – coax from input so-239 Amp in – to input circuits Rf out – coax from output network Install video only no paper instructions Kenwood Tl922 / 922a Harbach Electronics T/R Bias Relay Board Install Video