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This is a little sideways from antique radios but thought someone here might be able to help. I have a Hewlett Packard 5245L freq. counter. '60's vintage unit with nixie tubes. Worked well for many years, but has quit on me now. I have the service manual but I need the circuit board extenders in order to do any t/s work at all. I can't find the part no. of this item and an internet search turned up nothing. I realized HP hasn't made this tool since the '60's, but was hoping someone had one of these extenders they'd be willing to sell. Thanks for any time and help.
Generally (unless you are lucky) you will need to make your own
extender(s) using another extender that is too wide and cutting it to
the correct width. Then find the appropriate socket for the PCB under
test and solder to the top of the extender.
Keep it as short as possible to avoid noise.
Extenders are on eBay all the time. Just find one that is close. Here is
an example of one that can be cut down...
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