Andrew,? You don't specify which voltages appear on which leads of Q101.? I don't have my 7K and test equipment with me at my current location, but you should see the collector be about 13.8 VDC in RX mode and about 0.7 VDC in TX mode.? The emitter is tied to ground, the base is controlled by T8 (Transmit 8 VDC control signal) through a resistor divider, so it should be about 0 VDC in RX and something less than 8 VDC in TX.
This RF Switch is used to mute the RX signals coming from the PA board via J101 to the RX IF circuits during TX mode.? It doesn't affect the TX output functions.
Steve, W3AHL
Steve W3AHL