[Milsurplus] R-388/51J3 Difference

[Nick England]

I've been creating a database of R-388 and R-388A info for several
years and trying to sort it all out. It is still a pretty confused
situation, actually.
http://www.navy-radio.com/rcvrs/r388.htm

I am still looking for a photo of an R-388 or R-388A in actual USN
service (although one is shown at a commsta in a drawing on the front
of some RM training manuals).
http://www.navy-radio.com/manuals/radioman-1c-1966.jpg

I have never seen a an R-388A/URR ID badge or heard from anyone who
has. They are plenty identified as 51J-4's. There are also R-388's
with add-on mechanical filters. What did the Navy actually get from
Collins when they ordered R-388A's - I don't know.

An actual 51J-3 is evidently extremely rare - I have a photo of an ID
plate from one, but I suspect it is a repro.
http://www.navy-radio.com/rcvrs/r388/51j3-201.jpg

If anyone has an actual 51J-3 (not R-388), please send me info and photos.

I do have a photo of a 51J-3's original documentation, showing that it
had the MFP (tropical) treatment applied when manufactured in January
1953.
http://www.navy-radio.com/rcvrs/r388/51j3-man-01.JPG

Any additional info, corrections, photos, etc. are greatly appreciated.
cheers,
Nick K4NYW
www.navy-radio.com

p.s. yes I know the difference between plurals and possessives - some
folks like R-388s instead of R-388's, but the latter is a legitimate
alternative and IMHO adds some clarification


On Thu, May 24, 2012 at 7:16 AM, Bill Stewart <cwopr at embarqmail.com> wrote:
> Thanks for the info...Bill
>
> ----- Original Message -----
> If memory serves correctly, the mil version was tropicalized with yellow shellac.
> Also the radio came out as 51J, 51J2, and then 51J3 which was the 388/URR.
>
> The 388A/URR had mechanical filters added (an upgrade kit was available) and sold commercially as a 51J4
>
> Can't think of too much else.
>
> Others have comments?
>
>
>
>
>
>
> -----Original Message-----
> From: Bill Stewart <cwopr at embarqmail.com>
> To: Milsurplus <Milsurplus at mailman.qth.net>
> Sent: Wed, May 23, 2012 4:16 pm
> Subject: [Milsurplus] R-388/51J3 Difference
>
>
>
>
>
>
>
> Good afternoon,
>
> Is there any difference in the two receivers, other than the model
> numbers...one, military the other commercial? Thanks..73, Bill K4JYS
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