[Milsurplus] Question about signal generator

[jwatkins at omantel.net.om]

Hi All,

I used to have one of these and the plate was marked TS-497A, and below that was Measurements Model 80.  Had a 955 acorn tube for the Osc, etc.  Very nicly built.  I would guess that at least the A model of the TS-497 was the Model 80, not sure about those after the A.

Cheers,

John  WD5ENU/A45XV

----- Original Message -----
From: WA5CAB at cs.com
Date: Sunday, March 13, 2005 10:40 am
Subject: Re: [Milsurplus] Question about signal generator

> George,
> 
> I suspect that you're correct on the nomenclature, but I only have 
> the 
> manuals on TS-497A/URR and TS-497B,C/URR.  The only thing on LOGSA 
> is the -12P.  
> Reading between the lines in the -12P, the TS-497/URR may have 
> been a Model 80 
> with a new nameplate, as the parts list only lists TM's for the 
> A,B,C models 
> (which have miniature tubes except in the power supply section) 
> but lists 12SL7, 
> 12SN7 and 6V6 tubes on one page.
> 
> The manual for TS-497A/URR is TM 11-5030 but I don't know how 
> applicable it 
> would be to the base model.  Unless Measurements made later 
> versions for the 
> civilian market as well.  The front panel, aside from being gray, 
> is very 
> similar to what I remember the Model 80 as looking like.
> 
> In a message dated 3/12/2005 7:41:07 PM Central Standard Time, 
> gl4d21a at juno.com writes: 
> > I *think* the mil nomenclature is TS-497/U.  Robert, please 
> confirm/refute 
> > this.  I find several listings for the 497, but no pix :>(  
> There are manuals 
> > listed.
> > 
> > Anyway, the major difference, IIRC was the case.  The model 80 
> had a lab 
> > shelf case with no lid, the 497 had a ruggeder case with a lid.  
> But the guts 
> > are pretty much the same.  The usual failure was the bolometer, 
> and I finally 
> > gave away a 497 because I could never turn up either the 
> original part or a 
> > suitable substitute.
> > 
> 
> 73
> Robert Downs - Houston
> <" target="l">http://www.wa5cab.com> (Web Store)
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