This style of RCA was used by Yaesu (and probably others) on "interconnect"
cables in their
rigs in the late '70s early '80s.
On Wed, 26 Feb 2020 at 00:25, Jim Allyn - N7JA <jim@...>
wrote:
I remember reading somewhere, back around the time I got my first ham
license (1976), that somebody had swept an RCA connector and found it
adequate up to 4 GHz. It was NOT like the ones we used to buy at Radio
Shack, but one like that on the adapter at the left side of the photo
you posted. Update: found a picture, attached. Fender used to use
these in their guitar amplifiers on the cables that connected to the
reverb tank, and old floor-standing wood cabinet radio/phono
combinations used them on the cable from the phono to the amplifier.
(Wish I still had one of those old radio/phonos. Some even had
shortwave!) As you can see in the attached photo, if you need some, you
can get them at mojotone.com. In small quantities, 48 cents.
