[R-390] Below 500 kHz mod, again?

bw ba.williams at charter.net
Mon Sep 27 22:16:25 EDT 2004


> Guys I don't remember the specifics but there is a mod where one moves a
> couple of cables which bypasses part of the tunable front end/1st RF
> amp...and allows the radio to tune down below 500KC with reduced sensitivity
> and selectivity.  It has been posted here several times in the past and
> documented in one of the publications...either Electric Radio or HSN...I
> can't remember.
> 
> I think that is what is being asked about....no one remembers that one?
> 
> Cecil...

Cecil,

I have the mod that you are talking about. I have sent it to list members
several times and will send it again if they contact me. I scanned the
article into a pdf file. I think the file is 580 kb. A former member did the
mod and sent some details of how well it worked. I'm not sure about losing
sensitivity, but he did say that audio output suffered some. As far as
performance, he was happy with the results in heavy NDB chasing every night.
The only complaint that he had was fine tuning with the VFO knob. I'm not
sure that is a real issue myself. I have logged some very good beacons with
the Quantum loop down to where the R-390A stops working. It never bothered
me. 


Barry




More information about the R-390 mailing list