Howdy,

It appears the "AN system" nomenclature was devised around 1943, with the Navy using it during the war (e.g., AN/ARC-5).  TM 11-600, released in 1947, refers to radio set AN/VRC-5 (a BC-603 and a BC-604 on separate mounting bases), indicating the Army was using it by then...

73,

John K9WT


On 3/27/2026 10:44 AM, W2HX via Milsurplus wrote:

Maybe this was covered but… The nomenclature system was redesigned post WW2 (anyone know when)? So, prior to the AN system, SCR definitely stood for Set, complete Radio.  After the adoption of the AN system it meant something else, no doubt “Surface Water Craft, Carrier, Receiving.”

 

But this discussion was about BC (basic component) and SCR, both pre-AN system designations.

 

 

73 Eugene W2HX/4
My Youtube Channel:
https://www.youtube.com/@w2hx/videos

 

 

From: [email protected] <[email protected]> On Behalf Of Daniel Jones via Milsurplus
Sent: Friday, March 27, 2026 7:15 AM
To: Hubert Miller <[email protected]>
Cc: [email protected]
Subject: Re: [Milsurplus] "BC means Basic Component"

 

Well pardon the intrusion but  I was the only one that provided an official government document. I also mentioned it was from a later date,  So there is that. 

 

I was just providing input which I only do on occasion when I feel like there is some use to what I am providing.  

 

But everyone go ahead and continue saying this or that or other input is wrong with nothing official I’m sure it’s all true. 

 

Daniel

 

www.K6YIC.com

[email protected]

HH#11973



On Mar 26, 2026, at 21:28, Hubert Miller via Milsurplus <[email protected]> wrote:



 

 

 

 

Sent from my Galaxy

 

 

>Subject: Re: [Milsurplus] "BC means Basic Component"

 

In later manuals.  Specifically the Joint Electronics Type Designation system manual MIL-STD-196a dated 9May57 

 

SCR stands for Surface Water Craft, Carrier, Receiving, >passive/detection.

 

Pardon me, but i am not seeing how this helps. The Navy's 2 to 4 letter system and the Army's SCR system were both replaced, for new gear, by the AN system, i think 1943.

-Hue Miller 

 

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