[MRCA] mystery socket

[Ray Fantini]

According to Mr. Smiths web site the correct battery for radios like the BC-474 and GRC-9 and the like is a BA-48 that provides 1.5 and 90 volts, I do not know the name of that connector but it is a four pin female connector that's used on that battery pack. The battery packs that I will be building for MAB/DAV use is a five pin female connector like in the picture. They had to provide a bias and screen voltage so they needed an additional pin.


The plan at this time is to build a battery holder that will fit in the same size space as a BA-48, easy to see how it was used on the BC-474 but not at all apparent on things like a GRC-9 because they must have just been thrown next to the radio?

Ray F/KA3EKH



From: Gene Smar <ersmar at verizon.net>
Sent: Monday, June 30, 2025 3:28 PM
To: Ray Fantini <RAFANTINI at salisbury.edu>; MMRCG at groups.io; mrca at mailman.qth.net; milsurplus at mailman.qth.net
Subject: Re: [MRCA] mystery socket


It looks similar to the batt connector for the PRC-25 or -77 from a BA-4386. I found a source at Haney Electronic Co.

73 de
Gene Smar AD3F
Sent from my Radio Shack TRS-80 model 100 laptop

On Mon, Jun 30, 2025 at 2:42 PM, Ray Fantini via MRCA
<mrca at mailman.qth.net<mailto:mrca at mailman.qth.net>> 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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