> > Phil says;
> >
> > >IMO, anything less than a 15 watt R-supp on anything larger than a 800
> > >watt dissipation tube is under-engineering for an amp that is going to be
> > >used a lot on 12-10 meters.
> >
> > I'd go along with that - at least, for properly rated amplifiers. The
> > last big production amp I did (as opposed to amateur) was continuous rated
> > for SSB/FSK/AM etc at 400 watts output. I used some solid carbon resistors
> > rated at 15 watts continuous at 125 deg C. About 2 inches long, 3/8 inch
> > diameter. 2 tubes - 2 resistors and suppressor chokes. Can't get 'em
> > now.....
>
> The wattage required depends only on the amount of current
> diverted to the resistor(s) on ten meters, and their resistance.
>
> That is not directly related to the power involved.
I maintain that a 100% fudge-factor for R-supp is good engineering practice.
(((73)))
Phil, K5PC
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