[ARC5] Command set history

[Henry Mei'l's]

Mike--

You seem to have misunderstood what I'm getting at: The history behind the 
specific lot of Command Sets, I have in my possesion, not the general
history of Command Sets and their predecessors.

As I wrote earlier,  I didn't want to dig out the unit from under the pile, 
in a tightly packed cabinet - Now I've gotten as precise as possible - down 
to the very serial number. (My R-23 does have two (loop ant) push terminals, 
marked "A" -- above the "A-L" rotaty switch.)

Note: Dennis'  mail  covered  his frequency conversion of a BC-453 which 
from the point of view of his conversion circuits, is equivalent to the R23.

I'm aware of the differences and have followed the history of the Command 
and other communications units on this and other threads.

I also happen to have that 1964 issue of CQ. I subscribed to CQ back in the 
60's, and have also downloaded the Wikipedia's blurb - plus sundry other 
original Command Set manuals and other references as welll as having 
compiled a collection of many articles dealing with the units..

I was wondering if  someone on this thread could tell me about the precisely 
the history of my R-23 production batch, seeing that it ended up in DK, 
maybe as part of a NATO consignment, after 1948 and up to about late 1950's. 
But there's a strong probablity that these units were utilized here, 
pre-NATO--. before 1948.
Think I read something about Command sets and other US gear was alloted to 
the Danes as part of the Marshall Plan, also on certain conditions - but 
that's another story.

Since there has been so many  very specific references to place of origin, 
people involved, reasons for decisions, etc.- on this thread, I thought 
there might even be someone who can trace where specific lots of units were 
sent and used.

The more interesting units I have are two Command Receivers with German 
language markings, including the lid/cover tube placement references.
At first glance, they don't seem to be marked as either BC-  or  R-   /ARC-5 
but I should be able to identify them by the connector pin configurations 
and connections, and or tube line-up. They are also painted over, army-green 
(khaki depending on your defintion). Don't know if they were Marshall Plan 
or NATO allotments.

Please see my comment added in your response-

But thanks for refreshing my memory.

Henry, Cph- ex Bklyn




----- Original Message ----- 
From: "Mike Morrow" <kk5f at earthlink.net>
To: <arc5 at mailman.qth.net>
Sent: Sunday, September 26, 2010 7:33 PM
Subject: [ARC5] Command set history


> Henry wrote:
>
>>It's an "R-23/ARC-5
>>           NOs 74912  6657 CBY".
>
> In addition to the R-23 (and R-23A) and the R-148 that Robert mentioned, 
> the
> only other 190 to 550 kc receivers that had loop connections are the very 
> rare
> CBY-46102 of the RAV system (push terminals), and the R-11A of the 
> post-WWII
> A.R.C. Type 12 system (BNC).  The R-11A would not make a good "Q5er" 
> because
> it lacks a BFO.
>
>>Now that I've precisely identified my unit, maybe you can tell me 
>>something
>>about its history.


**HENRY WRITES/ADDS:

HISTORY OF MY SPECIFIC UNIT batch, not the history of the unit model-type.

>
> You can begin with list member Gordon White's November 1964 CQ Magazine
> article at http://www.scr-274-n.info/css.pdf .  Gordon wrote a wonderful
> series of surplus-related articles which were the only real reasons to buy
> CQ, 45 years ago.
>
> You may also find the information at http://en.wikipedia.org/wiki/ARC-5
> to be of interest.
>
> There are very many related web resourses to be found.
>
>>I was just using the term 'BC-453' loosely as a kind of generic reference.
>
> On a forum with people who collect and study this equipment, imprecise
> terminolgy may lead to miscommunication.
>
> For example, there are moderate differences between the ARA/ATA and the
> SCR-274-N systems, significant differences between receiver components of
> the ARA or SCR-274-N and receiver components of the AN/ARC-5, and *very*
> significant differences between transmitter components of the ATA or
> SCR-274-N and transmitter components of the AN/ARC-5.  One must often know
> the specific model to be able to comment accurately on a particular issue
> related to an ARA/ATA, SCR-274-N, or AN/ARC-5 component.
>
> Mike / KK5F
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