[R-390] Digital readout

[richardmay01 at comcast.net]

A digital readout mod actually did exist. It was an add-on using seven segment leds, stealing its power from the power supply. I was in Japan and noticed a few of these mods used on R-390A's for an intercept mode other than Morse code. Pretty cool, no calibrating was required and they read down to 100 cycles. I was lucky enough to talk the maintainance NCO out of one. The BFO did not change the frequency readout.  Of course, in those day, I didn't realize what I had and it is long gone. I have never seen another one. Rich.