[AMPS] K2RIW Amps

[measures]

>
>measures wrote:
>
>> I ran a pair of paralled 4cx250Rs on 2m SSB.  The tank was 1/4 wave.
>> With a screen current of c. 5mA (@400screen-v), the linearity was good.
>> Output was c.900w PEP on SSB. 10w drove it.
>> 
>> cheers
>> 
>> -  Rich..., 805.386.3734, www.vcnet.com/measures.
>
>I think in these arguments (anf it seems to have developed into that),
>it is essential to define what 'good' is. 

Good means no splatter complaints from nearby staions.

>It's a bit pointless saying
>900 W at good linearity, without defining what 'good' is. Does 'good'
>mean that it did not sound distorted at the other end, or that the 3rd
>order products were more than x dB down ? 
>
none of the above
>Without 'good' being defined, there is little point is arguing about
>whether a single 4CX250B can produce 250, 300, 450 or even 1 kW. I took
>a data sheet figure of 300 W, but clearly there is some tradoffs between
>power/linearity/tube life/voiding tube warrenty/and a whole host of
>other things. 
>
>-- 
>Dr. David Kirkby Ph.D,
>email: drkirkby@ntlworld.com 
>former email address: davek@medphys.ucl.ac.uk
>web page: http://www.david-kirkby.co.uk       
>Amateur radio callsign: G8WRB
>
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>
>


-  Rich..., 805.386.3734, www.vcnet.com/measures.  
end


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