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[AMPS] What (modern) tube to use?

To: <amps@contesting.com>
Subject: [AMPS] What (modern) tube to use?
From: km1h@juno.com (km1h@juno.com)
Date: Sat, 20 Feb 1999 15:34:06 -0500


On Sat, 20 Feb 1999 00:10:02 -0500 "Joe Subich, W8IK/4" <W8IK@ibm.net>
writes:
>
>
>
>>
>> ?   The good news is that the 8171 does not need to be left on 
>because it
>> is "instant on".  Thus, it makes no heat when laying in wait.    
>When I
>> ran one, I found that I needed it only occasionally.  During the 
>summer,
>> I opened the window to let the heat escape.  During the Winter, I 
>used it
>> to take the chill off of the room in the mornings.
>>
>
>Still, 550 watts of filament power and 120 to 150 CFM of airflow 
>(Svetlana
>data sheets) seem a bit hefty for an amateur amateur amplifier.  Of 
>course,
>it looks like one of the 200 watt rigs will drive the 8170 or 8171 to 
>10 KW
>output with a 400 Ohm grid resistor and a 9:1 autotransformer in the 
>input
>circuit.  All in all ... not an amplifier really appropriate for 
>amateur
>service.


Agreed, except to continue the never ending reflector hype on its use.
Belongs more on the CB reflector IMO.

73  Carl  KM1H



>
>73,
>   ... Joe Subich, W8IK/4  ex-AD8I
>       <W8IK@IBM.NET>
>
>
>
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>

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