[R-390] Re: bad audio

Fri, 30 Jan 2004 15:08:39 -0600

Well the trick, that is documented somewhere out there, is to take your
audio off the Diode Load point on the rear of the radio.  Feed it through a
matching circuit and into an external HI-FI amp and quality speaker.(anybody
remember that)  I understand it sounds very good that way....now mind you it
probably won't ever sound as good as a radio such as the R-390 or SP-600
with LC filters, on a big 12" speaker but with the increasingly crowded
conditions on the bands at times the tighter mechanical filters may make the
difference between being able to enjoy the signal or not.

There are also some AF deck mods that perk up the audio quality as well.
Mr. Rippel has info on his page about that.

Cecil...
----- Original Message ----- 
From: "Tony Angerame" <[email protected]>
To: <[email protected]>
Sent: Friday, January 30, 2004 12:36 PM
Subject: [R-390] Re: bad audio

James,

That's because those nasty old LIFER Staff Sergeants did not want we young
cool Airmen to listen to Radio Luxembourg. We kept and SP-600 and R-390 (Non
A) for that clandestine purpose.  (End Flashback to the sixties) Actually I
found the audio amps in the R-390a to be very flat so I agree must be those
Mechanical Filters. I use the 16kc position and pipe the IF into a Rycom
R-1307. Much better. Maybe picking off the IF before the filters would be
even better? Having said that I still love my R-390a!

Tony WA6LZH

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