I am looking at one of the connectors from the PRC-25 and -77 battery and it has a "D" cutout in the center of the five hole.  Also only 3 pins and they may not be in the correct places for a different application.  Otherwise it looks very much like the picture above.  Rivets and holes all in the same places.  1-1/2 inch by 7/8 inch.  But no idea what they are called.  Thanks, Steve



On Mon, Jun 30, 2025 at 4:05 PM Nick England <navy.radio@gmail.com> wrote:
False alarm. Went back to my 1951 Allied catalog and found the 78S-5S is a chassis mount round Bakelite type rather than the wafer insulation like yours. 

Nick England K4NYW
www.navy-radio.com


On Mon, Jun 30, 2025 at 4:32 PM Nick England <navy.radio@gmail.com> wrote:
Checking my 1965 Allies Industrial catalog.  Looks like an Amphenol series 78 ??
5-pin is 78-PCG5 but that mounting is wrong. 
Maybe 78S-5
Plugs are series 71
Maybe 71-5S

More later. 

Nick England K4NYW
www.navy-radio.com


On Mon, Jun 30, 2025 at 2:40 PM Ray Fantini via groups.io <RAFANTINI=salisbury.edu@groups.io> wrote:

OK smart people, what is the proper name of this type old socket? It’s a five pin socket that would have been used on a battery pack. Building up a couple battery packs for MAB radios and need more of these. Also similar to what’s used on the battery pack on the BC-474 radios (receiver) except that’s a four pin missing the one loan top pin.

 

Ray F/KA3EKH

 

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