[R-390] R390A- no sigs-4 to 8mc.

[Jim M.]

There are two IF chains.  The so called "IF Deck" is at 455 Kc, and yes it
is not suspect.  But there are also two "variable IF" stages in the RF
chassis, and a set of coils is dedicated to those.  That is what I meant by
"IF".  More than likely it is one of the RF coils associated with that band.
They do go bad so they make them plug replaceable.  Remove the slugs and
drop a very small Phillips head screw driver down into the coil.  The coils
are held in their sockets by a small screw at the bottom of the coil.  

This site may help with alignment:
http://r-390a.us/R-390A%20Alignment%20v2.htm

Here's the Y2K manual.  A good source of info:
http://www.hausernet.com/r390a/ 


-----Original Message-----
From: wb3fau at att.net [mailto:wb3fau at att.net] 
Sent: Tuesday, February 03, 2009 7:51 PM
To: jmiller1706 at cfl.rr.com; Roger Gibboni; Barry
Cc: r-390 at mailman.qth.net
Subject: Re: [R-390] R390A- no sigs-4 to 8mc.

not meaning to be argumentive, but,  how do you  conclude there is a  bad IF
can if the radio
works on higher and lower freqs OK?  
   i did  change out the set of RF coils for the 4 to 8 mc range,  with  a
set from  another 
receiver.  no help.  
   I think  the band switch is the problem- S203-204-205, but not certain.