thank you, jack
----- Original Message -----
From: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
To: <tentec@contesting.com>
Sent: Saturday, March 11, 2006 2:09 PM
Subject: Re: [TenTec] a question
> folks like tube audio amps not because they are cleaner but because they
> can
> be made to be dirty--performers (elec. guitar players) like the distortion
> produced by audio tube amps that have high plate v.
>
> as for RF, i just don't think you can generalize. all new AM and FM
> broadcast tx are s.s. these days. otoh, for hams, the cleanest two tone
> xmas tree plot i have ever seen was from a command HF2500 in a qst review.
> i am convinced a major factor in its exceptionally low products was the
> use
> of 3cx800s, i.e. triodes. this is one of the reasons why i like the
> Centurion, and other 3-500 grounded grid, cathode driven designs. the
> first titan used 3cx800s also. hams balk at buying these amps (the
> 3cx800
> ones) because of the cost of the tubes. to me it is worth it, and those
> tubes will last forever anyway if you know how to run an amp. pair of
> 3-500s is a lot less, $250 or so. either way, the c.d. g.g. design
> delivers
> a cleaner sig and i know guys who have amps running since the 1970s who
> have never retubed. it's not a major expense.
>
>
> rob / k5uj
>
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