[GreenKeys] Re: TT-4, TT-4A, TT-4B, etc., etc.

[Don Robert House]

Robert,

Only Tom can authenticate the information I provided.

The nomenclature is not important to the point I was trying to make.
The point was, and is, that Kleinschmidt designed the machine, but did  
not manufacture it.
They only made the prototypes. Two of which are in El Cajon, CA at  
Murphy's Surplus

Don
K9TTY


On 10 Dec 2007, at 10:35 PM, WA5CAB at cs.com wrote:

I don't think that is actually the case (that the TT-4/TG was never  
fielded).
According to a Supplement to TM 11-2234 that I have here, commencing  
serial
number of TT-4A/TG was 1392.  Which means that 1391 TT-4/TG were  
probably
built.  However, given the relatively minor differences between the  
two listed in
the Supplement, I would guess that a Depot drew back the TT-4's and  
converted
them to TT-4A's.  I could cite as other examples of this sort of thing  
being
done the PE-162-B and the SG-12/URM-48.  All of the former I have ever  
seen are
actually PE-162-C and the latter SG-12A.  I've been looking for years  
for an
unmodified (original) version of both.  The difference, though,  
between them
and the TT-4 would be that for no machines with TT-4 nameplates to be  
around
would require that they also changed the nameplates (which is actually  
the
logical thing to do).  With the generator and the signal generator,  
they didn't.  I
bought two PE-162-B and one SG-12 before discovering that probably no
unmodifed ones remain.  If anyone has an unmodified version of either,  
please contact
me.

There is, however, no conclusion to be drawn about the TT-4 manual  
being TM
11-2234 and TT-4A,B manuals being TM 11-5815-206-nn.  The manual  
numbering
scheme change occured in the mid 50's +/-2 and applied to all  
Technical Manuals,
not only TM 11's and not only the ones on the TT-4.  This was the  
change from
the short number to the long number scheme which coincided with the  
change from
a single manual covering operation, maintenance and parts to separate  
volumes
for each area.

In a message dated 12/10/2007 9:50:47 PM Central Standard Time,
duncanancy at earthlink.net writes:
> I did not realize that the "TT-4" was never fielded; but now that you
> mention it, I do not remember ever seeing any that were not "TT-4A",
> "TT-4B", or "TT-4C".  I spent a year in Viet Nam maintaining TT-4s  
> (along
> with a few TT-76s &TT-98s).
>
> The original manual, TM 11-2234, 6 April 1951, is titled  
> "Teletypewriter
> TT-4/TG".  But the operator's manual that replaced it, TM  
> 11-5815-206-12, 8
> April 1959, just covers the "TT-4A &"TT-4B" with no mention of the
> original "TT-4".  The most recent TM  on the TT-4 I have seen is a  
> change
> notice to TM 11-5815-206-12, dated 13 Jan 1984.  So the Army  
> apparently
> used the TT-4 for over 30 years!!

Robert & Susan Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
<wa5cab at comcast.net> (Backup email)

_______________________________________________
GreenKeys mailing list
GreenKeys at mailman.qth.net
http://mailman.qth.net/mailman/listinfo/greenkeys