[R-390] Request for data: AGC voltage on R-390/URR

[David Wise]

Can someone get me a bit of data?

I'm working on a writeup for a mod that allows
one to use an ordinary (non-18-ohm) meter in
the Carrier position.  I have an R-390A, but
not an R-390.  I need to know the AGC voltage
at 100dBuV, i.e. 0.1Vrms on the balanced antenna
terminals.  To keep it comparable to my R-390A
data, please do this at 1450kHz, and measure the
voltage at the antenna jack.  If you have time,
please also measure the no-signal voltage at
6AK6 pin 7, and the receiver-off resistance to
ground.  (The manual contradicts itself.)

Most of the credit for this mod goes to Gary
Gitzen and Pete Williams.  Their results
prompted me to develop it further.

Thanks,
Dave Wise