[TenTec] a question:

[jack]

thank you, jack

----- Original Message ----- 
From: "Ken Brown" <ken.d.brown at verizon.net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Sunday, March 12, 2006 1:17 PM
Subject: Re: [TenTec] a question:


> If you peruse the schematics of solid state RF PAs versus tube RF PAs,
> you will find the the bias control circuitry is the most complex part of
> the SS amp, often requiring more square inches of circuit diagram paper
> than the rest of the amplifier. Tube amps capable of QSK can have some
> complexity in their bias 'switching' circuitry, but their bias
> regulation is usually trivial often consisting of just a Zener diode.
> The solid state amp needs temperature compensation in it's bias
> regulation. This is one area where things can go wrong much easier in a
> SS amp than a tube amp.
>> As long as they are operated in their linear bias range, yes.  Otherwise,
>> they get real nasty and real fast.  Tube amps have a much softer bias 
>> knee.
>>
>>
>>
>>> a friend, ham radio op and commercial radio tech, suggested that solid
>>> state amps are "cleaner" than tube amps. is that "generally" true?
>>>
>>
>
>
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