[R-390] frequency counter connection point

[frankshughes at aim.com]

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