[R-390] Conversion Of R-390 IF Module

[Tom M.]

 The R-390 IF is tuned circuit and the R-390A is mechanical filter.  


    On Wednesday, January 8, 2025 at 07:37:27 AM CST, k1jos at att.net <k1jos at att.net> wrote:  
 
 What characteristics of the R-390 IF module improve the AM quality compared to the R-390A? 

Jerry

-----Original Message-----
From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> On Behalf Of Tom M. via R-390
Sent: Wednesday, January 8, 2025 7:16 AM
To: r-390 at mailman.qth.net; Byron Tatum <bjtatum1 at att.net>
Subject: Re: [R-390] Conversion Of R-390 IF Module

 Glad to hear it worked for you.  I did this many years ago.  Still use it today.

    On Tuesday, January 7, 2025 at 07:31:32 PM CST, Byron Tatum <bjtatum1 at att.net> wrote:  
 
 Hello All-  Took the plunge after careful study of conversion info and converterd an R-390 IF module to work in an R-390A. Appears to be working well. I cut some long #8 screws to replace the #10 greenhead holdown screws and have the module cinched down in place. So I am finally getting to hear the smooth R-390 AM from late madel R-390A.  Thank you to all who created and made available the conversion info.  Byron W5FH ______________________________________________________________
R-390 mailing list
Home: http://mailman.qth.net/mailman/listinfo/r-390
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:R-390 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________
R-390 mailing list
Home: http://mailman.qth.net/mailman/listinfo/r-390
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:R-390 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html