[R-390] frequency counter connection point

[Jim]

Frank,
I found one of your pills and remember the earlier exchange....
There is NO place to place to make a measurement that will reflect the dial 
reading.

The R-390A is a superhetrodyne receiver. It takes the input signal and mixes 
it with an oscillator to produce another (IF) signal.
That signal is mixed with another oscillator to produce yet another IF 
signal and lastly (in SSB or CW) another oscillator mixes with the IF signal 
to produce an audio signal.
The deduce the original signal, all the oscillator signals must be 
recombined, in the correct order/polarity, and the result may be measured.

Merry Christmas

Jim


> Hi,
> Could someone please tell me where I last placed my senility pills?
> I seem to have forgotten.
>
> I posted  a question some months ago asking where I could connect a
> frequency counter to obtain a
> numeric value that would (approximately) track the Veeder-Root display
> on my R-390A.
>
> Many replies and good suggestions, and I can't locate any of them in
> the archives, (http://mailman.qth.net/pipermail/r-390/)
> nor can I find any of my notes or records on same.
>
> So I'm sitting here in my hobby shop, ready to enjoy my time off with a
> fun project and ........
>
> Merry Christmas  !!
>
> Frank the Frazzled