Re: [sdiy] Kärmes tube oscillator and instrument amplifier

[anthony]

I've read all sort of cool books about "The Montauk Project" that 
(supposedly) took place at or around Ft. Hero. Some of those big tubes were 
probably big thryratrons.

>I used to go exploring at Fort Hero in Montauk, NY before they turned
> it into a state park. Back then you could walk through the buildings
> including the SAGE radar installation. The transmitting tower had a
> 135 ft wide dish on top. Everything was 50s tube technology in there.
> The room with the magnetron tube was just like a Frankenstein lab but
> with everything painted military grey. The magnetron tube itself was
> this gigantic oil cooled thing the size of a golf cart. Unfortunately
> vandals has either destroyed or removed all the large tubes in the
> other equipment but judging from the size of the sockets there were
> tubes in their as large as my head at one time.
> Really cool stuff.
>
> Mike
>
> On Jan 19, 2008 12:36 PM, Neil Johnson <neil.johnson97 at ntlworld.com> 
> wrote:
>> Reminded me of when I was at EMI Hayes (fond memories).  Round the
>> back there were some pretty scary valves alright - mostly copper
>> though!  Some of the older radar stuff looked right out of the set of
>> Frankenstein.
>>
>> Neil
>>
>> On 20 Jan 2008, at 04:35, Travis Shire wrote:
>> >> If you want to do some valve pR0n then this site is amazing:
>> >>
>> >> http://www.tubecollector.org/about.htm
>> >>
>> > Check out the specs on that water cooled triode.
>> >       Filament voltage 31.5 - 34V
>> >       Filament current 440 - 470A
>> >       Anode voltage 20kV dc max
>> >       Total emission 100A
>> >       Anode current 20A max
>> >       Continuous anode dissipation 150kW max
>> >       µ 40 - 48
>> >       Impedance 800 - 1200 ohms
>> >       Grid current 4.5A max
>> >       Grid power 8kW max
>> >       Frequency 30MHz max
>> >       Inter electrode capacitances
>> >       Grid to filament 101pF
>> >       Anode to filament 6pF
>> >       Anode to grid 51pF
>> >
>> >
>> > Speechless.......
>>
>> --
>> http://www.njohnson.co.uk
>>
>>
>>
>>
>>
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>
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