I wish i could help you, sorry. I saw a CD-? at the Seaside hamfest maybe a decade ago. I thought it was a very interesting transceiver.
I don’t remember if it was a -6 or a -2. I’m sure it didn’t go for much money – probably the number of people who know what it is, is
infinitesimal, and i really should have gotten it, just to assuage my curiosity.
-Hue Miller