D&A Mfg Scottsbluff Ne.

[KM5WX]

Anyone got info on an RDX 75 meter cw Transmitter? Appears to be in nice shape. Powered up without smoking up the shack. No crystals to test it. Any info will be appreciated. 73 Richard KM5WX

[K7MH]

Numerous CB amplifiers were advertised as a CW transmitter but they really were not.
D&A made a bunch of different CB amps dating back to at least the mid sixties.
All kinds of marketing ploys were used to fly under the radar and look legal.
You won't ever find one advertised in an old copy of QST.
Google them a couple different ways to find some perhaps limited info about their "products".
Probably a lot of what you do find will be in CB related concerns.
Their oldest stuff had a homebrewed look to them.
Probably all were sweep tubes which were dirt cheap back then. Some had 6 or more tubes in them.
Not sure how practical that is.
And it's not very often that you plug a vfo into a SO-239!

I believe that D&A went under after being shut down a few times by the FCC.
Maybe more than just a few times!

[K7MH]

I was just looking around and found that after a couple days of receiving a D&A "CW transmitter" in the mail you would get the instructions how to change it over to what it really was.
Where to tap the coil for 27 MHz etc. The crystal socket was replaced by an ssb delay switch and the key jack was where a standby switch went.
Pretty funny really!