[Milsurplus] NOS/NIB British VT-25, 7.5-36 valves. Any interest?

[George Babits]

You are probably correct Andy.  I haven't looked at them for a while.  They 
came out of some gear that ws pretty well trashed when I got it.  Also, I 
see some in the WS-52 receiver section that I have and a couple of other 
pieces.

73,
George
W7HDL


----- Original Message ----- 
From: "Andy Young" <andy-young at supanet.com>
To: "'George Babits'" <gbabits at custertel.net>; "'Kenneth G. Gordon'" 
<kgordon2006 at frontier.com>; <milsurplus at mailman.qth.net>
Sent: Saturday, November 25, 2017 12:09 AM
Subject: RE: [Milsurplus] NOS/NIB British VT-25, 7.5-36 valves. Any 
interest?


> You'll probably find there are 7 pins on your 'elliptical' bases - the
> prewar British B7 base, which was still in use in some airborne equipment
> during the war, for example Standard Beam Approach (SBA)
>
> Andy
> M0FYA
>
> -----Original Message-----
> From: milsurplus-bounces at mailman.qth.net
> [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of George Babits
> Sent: 24 November 2017 22:41
> To: Kenneth G. Gordon <kgordon2006 at frontier.com>; 
> milsurplus at mailman.qth.net
> Subject: Re: [Milsurplus] NOS/NIB British VT-25, 7.5-36 valves. Any
> interest?
>
> Yup;  British and/or Canadian.  For those who don't already know it; tubes
> are "valves."
>
> Not like US VT series of tubes.  The British (and Canadians) had a whole
> series of VT - -  tubes.  That stands for "Valve, Transmitting."   There 
> is
> another whole series of VR - -; standing for "Valve, Receiving."  I have
> quite a few of them from the stuff I got a couple of years ago.  Some have
> regular octal bases; but there are a lot with 8 pins in an "eliptical"
> pattern.  Requires a special socket.  Not sure eliptical ones are good for
> anything but restoration of very early war British equipment.  Some of the
> ones with octal bases can be cross referenced to standard numbers.
>
> 73,
> George
> W7HDL
>
>
> ----- Original Message ----- 
> From: "Kenneth G. Gordon" <kgordon2006 at frontier.com>
> To: <milsurplus at mailman.qth.net>
> Sent: Friday, November 24, 2017 2:09 PM
> Subject: [Milsurplus] NOS/NIB British VT-25, 7.5-36 valves. Any interest?
>
>
>>I am helping dispose of an SK estate here. One item of interest we found 
>>is
>
>>an un-opened
>> box of 6 of the subject "valves". How these ended up in Moscow, Idaho, I
>> have no clue.
>>
>> These VT-25s are not in any way related to the VT-25 or type 10 used 
>> here.
>>
>> I found a museum which has a PDF of the specification and a pretty
>> extensive web page or
>> two of this thing.
>>
>> Here is the URL to that:
>>
>> http://www.r-type.org/exhib/aab0122.htm
>>
>> Apparently they were used in many R.A.F. aircraft transmitters of the 
>> WWII
>
>> period.
>>
>> Is anyone here interested in buying any of these? If not, they will go up
>> on eBay directly,
>> probably next weekend.
>>
>> Photos are on my website at:
>>
>> http://www.w7ekb.com/Personal/VT25/
>>
>> I expect they are worth around $200.00 each and more.
>>
>> Thanks,
>>
>> Ken W7EKB
>>
>> ---
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