[R-390] frequency counter

[jm]

I use a frequency meter with my tube receivers. Every set has its
peculiarity but until now I have managed with the HQ-180, Transoceanic
(transistors) and Hallicrafters sx99.
The trick is to locate the oscillator signal,  offset the IF and the thing
works.
But... what about the 390? variable IF, lots of crystals. I have to confess
that I'm lost.

Is there an easy way to connect the frequency meter in a point in which the
oscillator signal could be found for all mhz positions?. What  would be the
IF value  to offset ?
I know that the challenge in this receiver is to obtain the maximun
sensitivity and precision via calibration but that's not my league yet and
meanwhile I think that a good solution is the frequency meter.

Regards and sorry for a beginner's question.

Jose
EA8DCP

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