I am going with Gordan Gibby's daughter board that just hosts 3 relays, mostly because my local club kitted this solution - and other than cutting traces there is little rework to the main board.? I need about 10 dB reduction of harmonics on 40 and 30 meters, and less on 80 and 20 meters to be in compliance.? (As there is reported variation in the Axicom relay approach, and different rigs require a different boost in rejection, it seems to not be the ideal approach to me - and I sense in quantity our approach costs less).?
I tried using a 45 MHz xtal filter between the bidirectional amplifier and mixer - every different way I could think of.? I even left both the series resistor and cap in place on the mixer side - no matter what I do I get a reduction of 40m CW transmit down to about 2 watts -- while no other band is affected.? At least one other rig in our batch is acting like this.? So when the final mixer is biased for CW 'direct PLL making RF' - it does not cooperate with changes on the IF port.? Have not yet tried LC filtering - don't know what it will do.? I need about 10 dB here also to filter the unwanted mixer spur on some of the higher bands.?
No other issues with my v4 transceiver.? SSB works nicely using an old electret microphone originally used with a 2m HT.?
Curt
