[Elecraft] Dollars per watt

Alan Bloom n1al at cds1.net
Tue Jan 25 21:26:44 EST 2011


Ah yes, Hashafisti Scratchi.  It's amazing how politically incorrect he
was.  You could never get away with that nowadays.

Al N1AL

On Tue, 2011-01-25 at 13:23 -0800, Vic K2VCO wrote:
> This sounds like a story by Hashafisti Scratchi or Larsen E. Rapp.
> 
> On 1/25/2011 12:52 PM, Alan Bloom wrote:
> > On Tue, 2011-01-25 at 08:04 -0800, Vic K2VCO wrote:
> > ...
> >> Speaking of dollars per watt, I'm presently using a homebrew pair of 813's which produce
> >> 800 watts (QSK but no 6M) and I have less than $400 into it. $0.50 dollars per watt.
> >
> > Many years ago I heard of a guy who built a linear amplifier using a
> > single 811.  He ran it in grounded grid with tons of negative RF
> > feedback (grid lifted way off RF ground with a small capacitor) so that
> > the gain was only a little greater than unity.
> >
> > As I recall, the input RF driving power was 900 watts and the output
> > power was 1000W, the other 100W being supplied by the 811.  But since
> > amplifiers are rated by output power rather than [output - input] power,
> > his dollars per watt came out at something like 5 cents/watt.  :=)
> >
> > Al N1AL
> >
> >
> 




More information about the Elecraft mailing list