Re: 810 tubes for sale (and others)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Sawyer by way of Terry Fritz <twftesla-at-qwest-dot-net>" <sawyer-at-waterville-dot-com>

hi Ed -

good points - the getter flashing on these is about 2", 1.5", and 1" on the
three tubes. no loss of vacuum (milky getters) on these. I can test
filaments if you know what pins to check (I haven't looked up the base
diagram yet).
thanks,
-Ed

At 11:41 AM -0700 3/15/02, Tesla list wrote:
>Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>"
><evp-at-pacbell-dot-net>
>
>>          810s have some interesting possibilities. 2500 V (ICAS Class-C
>> oscillator) 750 W max plate input power (175 W dissipation). Heater is
>> 4.5Amp-at-10VDC. Requires no forced cooling. Voltage is a little low for some
>> VTTCs.
>>          As a super Audio Amplifier (class B) you can get 400-500W per
>tube, if
>> you want to build your own avalanche starter. :-)
>>
>> Matt D.
>> G3-1085
>
>	One caution.  Tubes like that can be gassy.  I'd want to look at the
>getter spot.  If it's bright and shiny great, if it's white and milky
>looking NG.  Frequently it's somewhere in between, and then it's a coin
>toss.  Other than that a fine choice, and the plate voltage from an MOT
>would be just about right.
>
>Ed