Dexter McIntyre W4DEX wrote:

The SPM-19 lives!  Thanks to Jim Moritz, I was able to locate the
problem in the 40.01 MHz 2nd LO PLL circuit.  A 2N918 transistor on the
PLL board was open.  Replaced it with a NTE161 and now the VCO is
locked. A wandering VCO was causing the off frequency problem.

Now to find holes for all those screws!  What a beautifully engineered
piece of equipment.

W4DEX

Typical German quality....
Alex SV8QG