J-48-A - An oval-based metal straight key mounted on an
olive drab wrinkle finished base with matching cover
which was held in place by two screws. Though J-48-A
shape resembled J-37 and J-38 keys, its metal parts
made it quite a special design. Coil spring used to
return key lever resembled the one of J-38.
key was firmly attached to the radio front cover and
had a short cable terminated with PL-55, a 1/4"