In article , beerbarrel
wrote:

It does have the 1024 range on the switch. Maybe that's a good sign
eh?

Tracy-

Apparently the doubler can be added to one that doesn't have it. As I
recall, the internal counter displays frequencies in the 1024 range, even
if the doubler is not there. I have the impression that the counter is
not connected to the output, but to an earlier stage, and displays a
calculated value.

Look at the HP label that has "OPT" and see if any are listed. I think
the doubler is option 3.

If you need a manual, do a search for TM 9-4935-601-14-7&P.pdf. It is
about 10 Megabytes.

Fred