[Elecraft] K1 Issue. Lost reception when transmitter stage completed.

[Les Garwood]

Dear Fellows,

I just finished construction of my K1.  The receiver stage worked perfectly
until I finished the transmitter stage.  I still get audio hiss and volume
but no signal on any band, AGC on or off, attenuator on or off.
All the voltages and resistances check out except the anode of D9,
according to the manual, is supposed to be > 100k.  I'm sure this is an
error, however,  since the DC path to ground from that point goes through
three resistors and a choke totalling only about a couple K,  which is what
I measure.
I still get rf out of the VFO, and can trace it through the filter board,
J6, at pins 1,2 and 6, with my scope.  However,  there is no trace of
signal rf from the antenna on pins 1 or 8 of J7.

I have no rf at the attenuator relay either, at pin 3, or any other.

I can't quite figure out yet how the TR switch circuit works (or doesn't
perhaps) so it's hard to troubleshoot if it is the problem or not.

Needing the filter board in place makes trouble shooting all the harder
too.  I wish I had a layout view showing the bottom of the rf board to help.

As always, any comments welcome and appreciated.

73

Les
KE7SLX