SV: SV: SV: [AMPS] Tetrode Amp Help

[sm5ki]

I remember many old tube transceivers that did not have any stabilized g2
voltage in the final and it worked fine. My old TX44XB for example. It sure
sounds fine and was once good enough OK for Swedish State Dept using many of
them as TR44s. This was a R4B+T4XB in the same case.

One of the best sounding rigs ( ICOM IC 701 ) did not even have a stabilized
13.5 voltage but just a huge reservoir condenser. Yes, it had mains ripple
on cw and a very dirty synthezizer but it had a special sound very easy to
recognize.

Hej daa de Hans SM5KI

----------
>Från: measures <measures@vcnet.com>
>Till: <gdaught6@leland.Stanford.EDU>, "AMPS" <amps@contesting.com>
>Ämne: Re: SV: SV: [AMPS] Tetrode Amp Help
>Datum: fre 10 dec 1999 17.36
>

>
>>
>>
>>Hi all,
>>
>>> >Thanks for info. Of course you need always  a high frequency screen grid 
>cap
>>> >or grounded g2. But you did not get my point: if your g2 voltage is slowly
>>> >following your SSB-signal you do not get envelope distorsion but a slow 
>gain
>>> >variation. 
>>> 
>>> I do not agree.  When the screen / G2 voltage is not held constant, 
>>> distortion results.  
>>
>>I'm with Rich on this.  "A slow gain variation" is a nonlinearity!  
>>Whether it is small enough to be unimportant, i.e. legally acceptable 
>>is another question, but why not use a stiff regulator and avoid this 
>>source of distortion?
>>
>indeed, George.   G2 DAF amplifer salesmen seem to be somewhat DAFt.  
>They are sort of like inventors of 400mpg carbs for autos.  
>
>cheers
>
>
>-  Rich..., 805.386.3734, www.vcnet.com/measures.  
>
>
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