[Milsurplus] V-127-A Info Request

[Ray Chase]

It is indeed the VT-127A as described by Sibley.  A redesign of the TH-100 
for the Army for use in the Army's first anti-aircraft radar the SCR-268. 
More info in this radar can be obtained at Wickipedia or a better website, 
www.antiaircraft.org/SCR268.htm.  The fourth picture down shows the 
transmitter unit that contains 16 of these tubes in a ring oscillator 
configuration developing about 75 kw peak power at 205 Mhz.  One of these 
transmitters is currently undergoing restoration at InfoAge located at the 
former Camp Evans in NJ.  www.infoage.org.  No relation to the 527 that was 
also used in ring oscillators for radar but is a larger tube.
Ray Chase

----- Original Message ----- 
From: "mac" <w7qho at aol.com>
To: <jfor at quik.com>
Cc: <vintage-military-radar at yahoogroups.com>; <milsurplus at mailman.qth.net>
Sent: Monday, November 23, 2009 4:41 AM
Subject: Re: [Milsurplus] V-127-A Info Request


> Sounds like the VT-127A as described by Sibley.  Specs also in the
> Radio Handbook, Eleventh Ed.
>
> The 527 also looked something like that.  Had a coaxial filament
> connection coming out of the base.  Took 5.5V at 135 amps to light it
> up.
>
> Dennis D. W7QHO
> Glendale, CA
>
>
>
> On Nov 22, 2009, at 12:05 PM, J. Forster wrote:
>
>>>
>>> From a pic, it is a WW II+ power triode, VFH or higher, with two
>>> grid and
>> two plate leads radially out the sides and a directly heated filament.
>
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