Hi Mark, I confirm the drift problem, if you change the six resistor from 100 to 220 ohm this help realy in RX mode. But in TX mode the problem return mybe becauae the PA warm up all the PCB...and make difficult voice qso and impossibile the use with Digital modes. I decide to move to DDS, already Done some tests and it work well. You Can use also an external analog VFO if you want. More info on blog site of hack page.?
73 de ik8yfw
Giuseppe.
