[Collins] R-388 Y112

[Gerald]

On Sun, 2005-12-18 at 16:06 -0800, Chris Kepus wrote:
> >From Jerry's message on this subject: 
> 
> " There is a module that makes a 51J-3 (R-388) into a 51J-4 that holds up to
> three mechanical bandpass filters. Its noticeable from the front panel by a
> little lever sticking out from behind one of the other knobs to the left of
> the main dial."
> 
> Does this mean that the ONLY difference between the -3 and -4 is this
> module?  Sorry I don't know more about the subject....  I had to ask.

YES. There was a kit available at one time to do that. I've seen one for
sale on epay in the past couple years. It requires stripping out the
first IF tube stage after the crystal filter and the module mounts in
its place.
> 
> Thanks, 73,  Merry Christmas, Happy Honnuka, and Seasons greetings to all!!
> Chris
> W7JPG
> 
> 
> 
-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer