[Milsurplus] [ARC5] SCR-A*-183/283 Data - Revised and Extended

[Kludge]

EEK!  He's in my head and there ain't room for but one of us!  Heck, there's
not even room for one!  :-D

Seriously, I can confirm pretty much everything Mike said with a few hiccups
I'll have to check out.  As Dave noted, the chronology of the military Model
D based equipment started in 1931 with the Navy's RU receiver which was
essentially the ARC-designed & S-C built receiver highlighted in the October
1930 issue of QST.  The AAC's 1932 SCR-AA-183 used this receiver mated to a
compatible transmitter which the Navy ordered as the GF Rx/Tx a few months
later.  The Army design remained fundamentally the same throughout its
career although there were a few revisions adequate to give the Rx & Tx new
model numbers.  The Navy's version advanced rather significantly over the
first few iterations after which it stabilized with a vastly improved
version with a few minor revisions later on.

One point Mike and I disagree on is the use of the RU-2 receiver.  Figure 26
in the GF & RU-2 manual clearly shows the receiver without the transmitter
while it also shows the "GF/GF" as a complete system.  There is a small note
in the manual that says it *can* be used with the GF transmitter in place of
the GF receiver but, as noted in an earlier paragraph at the beginning of
the RU-2 section of the manual, as a rule it is operated with the switch in
the junction box in the "Rec Only" position which precludes such use.  This
goes back to my contention that it was used with the early GO transmitters.
After this version, the design split between those receivers intended for
use with a GF transmitter and those intended for use with other
transmitters.

With that, I don't think I'd be so bold as to say the extended coil sets for
the later versions of the BC-A*-229 weren't made.  On the other claw, I
would be very happy to go with the idea they weren't made in any notable
quantity.  At this late date we have nothing to go on except speculation and
the only real way to find out is to locate production records for that time
period.  What I base my comments on is that the coil numbers were updated
along with the base sets and are still shown on the tube cover of the
BC-AS-229 which wouldn't be so if they didn’t exist in some quantity.  

One difference between Mike M and me is how we count things.  He only counts
equipment that was built in operationally significant quantities where I
count everything associated with Aircraft Radio Corporation even if they
never became operational and/or were only built in onesy-twosy quantities.
We have different end goals so this difference is understandable.  

Best regards,
 
Michael, WH7HG ex-K3MXO, ex-KN3MXO, WPE3ARS, BL01xh ex-Mensa A&P PP BGI 
I am me.  I’m the only one who’s qualified.
http://www.nationalmssociety.org/chapters/NTH/index.aspx
http://wh7hg.blogspot.com/
http://kludges-other-blog.blogspot.com
Hiki Nô!