[Amps] 4-250A and interesting socket information.

R.Measures r at somis.org
Wed Aug 25 09:56:07 EDT 2004


On Aug 25, 2004, at 5:58 AM, Bill Fuqua wrote:

>       The specifications for the 4-250A are the same as the 4-400A 
> except for the plate dissipation. The 4-400A  has fins added to the 
> anode. I prefer the 4-250A tubes when I have an amplifier with a 
> window. In SSB or CW a pair glows much better at full output power.

-  Amen, Bill.  When it comes to a cheery glow, tantalum plates are the 
only way to go.  .
>
>
> 73
> Bill wa4lav
>
>
>
> At 10:13 AM 8/25/2004 +0100, Steve Thompson wrote:
>> I've come across some of these tubes - are they useful as spares for 
>> any
>> commercial kit? Do they have any particular vices or virtues?
>>
>> Thanks,
>>
>> Steve
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>
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>
Richard L. Measures, AG6K, 805.386.3734.  www.somis.org



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