[Amps] 'good engineering'

[Carl]

That looks like a good driver tube, less glow than a 4X1 also. Typical Class 
C Ruskie junk but it might work OK as a GG linear or triode connected 
modulator in Class B.
Price is no bargain either.

http://www.zeitmann-tubes.com/MilitarySurplus/NosRussianMilitaryTubes/GU81M.htm

Carl
KM1H


----- Original Message ----- 
From: "Roger" <sub1 at rogerhalstead.com>
To: "Carl" <km1h at jeremy.mv.com>
Cc: <donroden at hiwaay.net>; <Amps at contesting.com>
Sent: Monday, March 29, 2010 12:09 PM
Subject: Re: [Amps] 'good engineering'


>
>
> Carl wrote:
>> Swap them for a litter of 4-1000A's and then hou can heat and light at 
>> the same time.
>>
> Awh, come on now Carl, a pair of GU81B's makes the best basement space 
> heater around.
>
> 73
>
> Roger (K8RI)
>> Carl
>> KM1H
>>
>>
>>
>>
>>
>>> Thanks !!  My shack is in a basement room and stays around 60 degrees
>>> even in the summer. I usually run a 1500 watt space heater.
>>> Hummmmm.... maybe three 5000s would totally replace the space heater.
>>> Problem is I only have a single SB-220 transformer.
>>>
>>> Don WA4NPL
>>>
>>>
>>>
>>>
>>>
>>>
>>> Quoting "James Colville" <jimw7ry at gmail.com>:
>>>
>>>
>>>> If you want to run a 562 (7.5 volts @75 amps) watt filament in your
>>>> shack.... That's your prerogative....
>>>>
>>>>
>>>> 73
>>>> Jim W7RY
>>>>
>>>>
>>>>
>>>> On Sun, Mar 28, 2010 at 7:12 PM, <donroden at hiwaay.net> wrote:
>>>>
>>>>
>>>>> If all I have on hand are a few 4CX5000s with sockets and filament
>>>>> transformers, are you telling me that I should not use them ?
>>>>>
>>>>>  Don WA4NPL
>>>>>
>>>>>> Quoting "Alex Eban" <alexeban at gmail.com>:
>>>>>>
>>>>>>
>>>>>>> Tell me guys.
>>>>>>> Who's idiot enough to build a 5 kilowatt amplifier and use it at the 
>>>>>>> 1,5
>>>>>>>
>>>>> kW
>>>>>
>>>>>>> level?
>>>>>>> Are we kidding ourselves or not?
>>>>>>> Alex 4Z5KS
>>>>>>>
>>>>>  _______________________________________________
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>>>>>
>>>>>
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