[Milsurplus] AN/URM-32A

[WA5CAB at cs.com]

Bob,

Probably used dry nitrogen.  I recall that on several ships we used it to 
pressurize the AN/WRT-1, AN/WRT-2 and the AN/SRA-22 antenna couplers.  First we 
would evacuate the units with a vacuum pump (to dry out the interior) and then 
fill with nitrogen.  I don't recall the pressure we were supposed to fill them 
to but it was fairly low, maybe around 20 psi.

In a message dated 7/24/2004 8:29:13 AM Central Daylight Time, ham at cq.nu 
writes: 
> The interesting thing is the URM-32 has a fitting that looks a lot like 
> a tire stem mounted on the chassis. I assume it is either to pressurize 
> the sealed chassis or to dry it out. Pressurized dry air seems to be an 
> unusual thing to have around the shop. Definitely need to take a look 
> at a manual.

Robert Downs - Houston
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