Yep, APS-13 was what it was. I thought of it,

but was not sure 66 years after the fact.

73 de Mac, K2GKK/5

Licensed 30 Nov 1953

Oklahoma City, OK

USAF (Retired) 61-81

FAA (Retired) 94-10

From: K2GKK D C_Mac_ Macdonald <[email protected]>
Sent: Friday, November 18, 2022 21:35
To: Hubert Miller <[email protected]>
Cc: ARC-5 <[email protected]>; milsurplus@mailman <[email protected]>
Subject: Re: [ARC5] [Milsurplus] Old surplus catalogs are always fun to look through

I don't remember now what I bought for about $5
that I think was some sort of device used in the
tail of a heavy bomber. No real use to me but I
took it apart for tube sockets (7-pin miniature) and
whatever tubes they contained. The initiation of my
"junk box" in about 1954.

Mac , K2GKK/5 in OKC, OK

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