[Milsurplus] CH-294 designed for?

[James C Whartenby]

Greetings
I am looking for the proper chest to house the BC-342 that I have just
brought back to life.  Checking the Chesson Lists, I found the SCR-543 in
the SCR.HTM list.  Happen to have a CH-294 (sometimes you just get
lucky), but I don't have a copy of TM 11-625.  Is this the right chest
for a BC-312 / 342?  Would like to display the radio and an LS-3 with all
of the trappings, if possible.

Also, what was the CH-121 used with?  Have one of those also but it is
puny when compared to the CH-294.
Regards from Arkansas,
Jim