[R-390] Detector tests followup

[Flowertime01 at wmconnect.com]

Barry,

After going back
and forth a couple of times to get things levelled out, I ended up with 4uV
sensitivity.  This is somewhat uncalibrated as the signal generator is
putting out 50 ohms into the balanced input and my IF gain wasn't set
exactly right (I had fiddled with earlier and had not reset it properly).

This isn't too bad a performance indicator, though, is it?  I'd be worried
if it took 10uV or 20uV to get the 10dB increase and I realize 3uV is the
spec, but I'm not completely unhappy with 4uV at this point.

------------------------------
I think you have your receiver operating within specification.
Now it sound like lots of alignment and some better tubes.

I think you may be on about the test not being exact numbers.
My Y2K manual is some where with my R390 TM. Still packed from the move.
So I have not been able to check what you are reading there.

Roger AI4NI