I have found 2 encryption units MA4204, but now the problem, no info Who can help me????.....
Meindert de Jong PA3BVN
I have never found the manuals for this one. However a lot of the circuitry and some of the boards are the same in the MA4014 which I did find on line, but it is in a pdf format that does not permit printing it out. As I have never been able to work on things on the bench and refer to a computer screen with only part of the circuit visible at the other side of the room this did not really help me to get mine going... But you may be luckier!
73
Dan
ac6ao / g3ncr
p.s. I don't know where it was but google may help.