[Milsurplus] Tube ID ?

[Howard Holden]

The 838 is a low bias version of the 211, mainly for audio use. Among other 
places, it was used in some of the WW2 SONAR gear, as power amps for the 
transmitted SONAR signal.

I've used both the 211 and the 838 in a push-pull Hartley oscillator, 
monster signal, if somewhat impure by today's standards.

Great tubes.

Howie WB2AWQ/7

-----Original Message----- 
From: w4ron at carolina.rr.com
Sent: Saturday, June 01, 2013 10:19 AM
To: milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] Tube ID ?

>
> I have an 838 and a Navy tube, so marked as U.S.N., CUE 38111.  They 
> appear identical from what i can see.  However the Navy tube does not say 
> 838 anyplace.  I'm thinking that the "38" in the tube number 38111 is the 
> hint that its really an 838.  Both tubes light up nicely.  A pair would 
> really look good on a chassis generating RF!
> Made in USA by United Electronics.  Stamped on the base in ink it also 
> shows "1000 hour guarantee".
>
> Anyone interested?
>
> Larry
> W0OGH
>


I think they're the same as a 211.

--
73, RON w4ron
http://radioheaven.homestead.com/menu.html

My YouTUBE channel
http://www.youtube.com/user/w4ron



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