[Boatanchors] Type 860/VT-17 Tube Question

[J Forster]

FYI:

Subject:           Re: [Milsurplus] VT-xx Tube designations
     Date:           Tue, 17 Jul 2007 11:31:38 -0500 (GMT-05:00)
     From:           Mike Morrow <kk5f at earthlink.net>
 Reply-To:           Mike Morrow <kk5f at arrl.net>
       To:           J Forster <jfor at quik.com>, milsurplus at mailman.qth.net


>Were the VT-xx designated tubes used before WW II or was that a wartime
>designation?

It goes back at least to the early 1920s.  I have a 1924 Signal Corps training manual covering radio sets then in use, many of
which used VT-1 tubes.

A good cross-reference is found at:

http://pages.cthome.net/fwc/VT.HTM

The US Army Signal Corps VT- designations shouldn't be confused with the UK's WWII VT- designations.

Mike / KK5F

************************

Todd, KA1KAQ wrote:

> On 7/17/07, Freeberg, Scott (STP) <Scott.Freeberg at guidant.com> wrote:
>
> > Has anyone here actually used an 860 before?  It's a monster tube, globe with the plate connection wires coming out of the top, to attach to the tower, a proturberance coming out of the side, again with wires coming out.
>
> Yep, I have a few NOS examples of the 860 and others in storage for a
> HB rig 'someday'. They're not terribly rare, I think the most I've
> seen one go for is around $50. Usually $8-$15.
>
> Just be careful about flexing the wire too much as it does snap off
> the rods near the glass.
>
> ~ Todd,  KA1KAQ
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