[R-390] Official specs

[David Wise]

I adjusted my IF gain for maximum S/N at I don't remember what frequency.  (Probably should have used 32MC but didn't.)  The resulting gain was significantly below the standard value.

FWIW,
Dave Wise
SWL (inactive)
________________________________
From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> on behalf of Jacques Fortin <jacques.f at videotron.ca>
Sent: Friday, October 4, 2024 10:40 AM
To: 'Ing. Giovanni Becattini' <giovanni.becattini at icloud.com>; 'Bob Camp' <kb8tq at n1k.org>
Cc: r-390 at mailman.qth.net <r-390 at mailman.qth.net>; 'Larry Haney' <larry41gm2 at gmail.com>
Subject: Re: [R-390] Official specs

We should also take into account the setting of the IF gain (R-519).
I do not know if the procedure promoted by Chuck Rippel (Y2K-R3. Page 9-88) is the best one or not.
This procedure uses the IF deck self-generated noise to adjust the gain...
But from unit to unit, the mileage may vary a lot, and the global measured sensitivity also...

Any comments ??

73, Jacques, VE2JFE in Montreal



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