Got numbers 1 and 2 ready to go as soon as your filters arrive, Wald. The other things I need to do to these are to put a new battery backup harness in one and replace the FSK Unit in another. Seems it doesn't want to produce any output - the faulty unit joins a growing collection of modules destined for troubleshooting and repair in the "mule".
Those TCXOs look interesting, particularly in light of the fact they allow for external adjustment. One of my other favorite lines of gear is JRC. Their NRD-525 uses a 12.8MHz TCXO as its reference oscillator. A neat mod involves fitting an adjustable unit then making circuit changes which will allow the BFO control to tune it over a narrow range. (Normally, the control is only operative in CW mode.) This allows for "poor man's ECSS detection" - which is kinda funny as I lucked into a -525 with an Edvis PLAM board already installed.
I seem to recall a similar keyer design for the FT-90x...the several '980s and 901/902s I have which aren't equipped with keyers can benefit from the addition. Happen to have a source of these or a link to the design?
73 - Fred, N8YX
