[Milsurplus] what use/value AN/URM-64/TS-419/U?

[Bob Camp]

Hi

I had a pallet of these a while back. Here's what I observed from those:

1) Out of the 22 tubes in each the generators maybe one or two tested 
"ok" (as opposed to good) on a tube tester. The majority tested dead.

2) If I remember correctly the klystrons were among the dead tubes (as 
in no filament). That pretty much tosses out the calibration.

3) The fans on the commercial version are amazingly long lived - they 
all worked.

My only first hand experience with these beasts (as in when they were 
new and I still had hair) was that you left them on all the time. That 
way the drift was at least close to reasonable. My suspicion is that 
the batch I had stayed plugged in for about a year or two after they 
were last used.

Eventually I came to the same conclusion you have ..... scrapped them 
out.

	Take Care!

		Bob Camp
		KB8TQ


On Feb 2, 2005, at 2:00 PM, ejones at hiwaay.net wrote:

> de N4TGC Eric
>
> Before I haul off and part them out, anyone have any use or better
> suggestions for a pair of URM-64's?  (aka Hewlett Packard 614A, ARC 
> Model
> H-12) They're a 1950's era, 900-1200mc, CW/PM, 1mw sig-genny that 
> weighs 42
> lbs, in an 18 lb carry/shipping case.  They power off 115vac, 
> 50-1600cy (my
> TM 11-487 says 500 -1600, but that's wrong), and have 22 tubes: five 
> 0A2,
> two 5R4, eight 6V6, six 7F8, and according to AES prices, a $90+ 6BM6
> klystron.
>
> The cable box in the lid is empty, of course.  Pretty homely, overall 
> - not
> much excitement on the face: a few knobs, BNC jacks, etc.  They're 
> designed
> to be used w/o being extracted from their case, FWIW.  Anything 
> worthwhile
> here?	e
>
>
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net
>