[Boatanchors] Info on R-390A filters needed

Tue, 14 Oct 2003 10:28:03 -0400

Actually it has both.  0.1KC SELECTIVITY switch summons up 
the crystal filetr, and the SHARP AUDIO RESPONSE switch 
turns on the (approx 700Hz CF)audio bandpass filter. (R-390 
also has a 3KHz audio lowpass filter at "MEDIUM" that's 
great to beating the 5KHz hets when SWL'ing.) Manual is on 
the web.  Start with: http://www.hausernet.com/r390a/

Al

[email protected] wrote:
> Does anyone out there have a book on an R-390A and can tell if that 
> radio used a 455KC xtal filter for CW or uses an audio filter for that 
> mode?  Even better if someone could scan that section of the receiver 
> and would E-mail it to me.
> I've heard guesses to both, but nothing for certain.   Thanks very 
> much.....you guys are are always great, 73 Ron
> 

-- 
Al Klase - N3FRQ
[email protected]
Flemington, NJ 08822
Web Page:  http://www.webex.net/~skywaves/home.htm