[R-390] R-390a question
Flowertime01 at wmconnect.com
Flowertime01 at wmconnect.com
Wed Feb 13 13:03:45 EST 2008
Tony,
This is a clue you maybe have some good tubes in your R390 or the IF gain
control is set to high.
Find that sweet quite spot on the dial again.
Set the Function switch to AGC.
Back the IF gain down until the AGC voltage drops off to zero.
You may slide to zero very nicely or the AGC voltage on the terminal board
jumper may just go over a cliff to zero. If so then set the IF gain with just a
little voltage.
Try this for a few days and decide if you like the way the receiver sounds.
It depends on if you are doing easy listening or trying to pull a CW DX out
of the crud. Some applications like more IF gain and MGC mode while other
prefer a more balanced receiver setup.
Play with the IF gain against the RF and audio gains. There are differences
in output beyond just the meter levels. To each his own.
Roger AI4NI </HTML>
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