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Look here:

/g/DRAKE-RADIO/files/TR-7/TR-7%20Parent%20Board%20Pin%20Numbering.pdf

Pin 40 is the right-most pin as you are looking from the front of the radio, next to the PA deck. It is a short trace connecting the PBT/REF and 2nd IF boards.

On Sun, 12 Jan 2025 08:14:55 -0800
"Mike Davidsohn G3ZCC via groups.io" <mike@...> wrote:

Dear Jim and Craig
40 mhz on p19
53.695 on p17
Where is p40?
I can hear 5.645 on an adjacent rx and correctly not when the Tr7 is in AM Mode.
Sorry but I can't find the sheet I had with the pin numbers on
Kind Regards
Mike
G3ZCC

--

73

-Jim
NU0C