[Collins] R-388 Y112

[Chris Kepus]

>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.

Thanks, 73,  Merry Christmas, Happy Honnuka, and Seasons greetings to all!!
Chris
W7JPG