A reasonably good 4x1 will do 1500-1800W with 100W drive at 3500V. Thats
little different than an 8877, 4-400, 3-500, and similar at its happy
voltage.
Carl
KM1H
----- Original Message -----
From: "Zeitler, Lane LT, FST-1" <zeitlel@cpr3.navy.mil>
To: "Roger" <sub1@rogerhalstead.com>
Cc: "Carl" <km1h@jeremy.mv.com>; <Amps@contesting.com>
Sent: Monday, March 29, 2010 10:26 PM
Subject: RE: [Amps] 'good engineering'
Roger, good point.
Lane
Ku7i
-----Original Message-----
From: Roger [mailto:sub1@rogerhalstead.com]
Sent: Monday, March 29, 2010 3:38 PM
To: Zeitler, Lane LT, FST-1
Cc: Carl; Amps@contesting.com
Subject: Re: [Amps] 'good engineering'
Zeitler, Lane LT, FST-1 wrote:
> I used to dream of a pair of 4-1000A's but the higher plate voltage
> these tubes like kind of scares me a bit.
>
Be it the plate voltage on a GU81, YC-156, or pair of 811A's, one will
kill you just as dead as the others.
73
Roger (K8RI)
> Lane
> Ku7i
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
> On Behalf Of Carl
> Sent: Monday, March 29, 2010 12:16 PM
> To: Roger
> Cc: Amps@contesting.com
> Subject: Re: [Amps] 'good engineering'
>
> 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/GU
> 81M.htm
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "Roger" <sub1@rogerhalstead.com>
> To: "Carl" <km1h@jeremy.mv.com>
> Cc: <donroden@hiwaay.net>; <Amps@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@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@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@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
>>>>>>>>
>>>>>>>>
>>>>>> _______________________________________________
>>>>>> Amps mailing list
>>>>>> Amps@contesting.com
>>>>>> http://lists.contesting.com/mailman/listinfo/amps
>>>>>>
>>>>>>
>>>>>>
>>>> _______________________________________________
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>>>>
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>>>
>>>
>>>
>
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