[R-390] adapter

[Gene Dathe]

Thank you to all on the list who responded about my PTO problems, especially 
Dave Medley who went to the n th degree...

I recently acquired a 8640B and so am having the usual fun, alignment etc; 
and so the question is:

What is the nomenclature the connectors J217 and J116?  That is, to hook up 
the PTO to my frequency counter,  I need an adapter from what to BNC?

Also, do folks drill a hole in one IF can and move it around when aligning 
all three, drill all three cans, or find a drilled spare?

Thanks,
73 de NAØG Gene

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