[Milsurplus] identify tube

Thu, 06 Feb 2003 08:59:03 -0500

To the best of my recollection the 931 is the same as an 1P21 and not a
1P25. Besides a broadband noise source it was also used in scintillation
counters and light amplifying devices. 73 - Mike

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ, 07731
(732) 901-9193

----- Original Message -----
From: "Robert G. Flory" <[email protected]>
To: "milsurplus" <[email protected]>
Sent: Thursday, February 06, 2003 6:00 AM
Subject: [Milsurplus] identify tube

> Hi,
> Wait a sec.... a 1P25 is an infrared image tube as used in sniperscope,
> snooperscope, not a photomultiplier.  Has a distinctive optical goesoutta
> in the center of the pins.
>
> The tube in question may indeed be a photomultiplier.  They have a very
> distinctive architecture inside.
>
> 73, Rob K2WI
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