[Elecraft] time for KPA1500 - but why "no tubes?"

[Ron D'Eau Claire]

Quite true Hank. Some amps have a fairly large tolerance of mismatch. But
it's still "fixed tune" = you don't need to adjust anything.

My point was that when the load exceeds what the fixed tuned output will
handle, we now use an ATU to handle the "tuning". 

P.S. I envy your elevation but, from my QTH on the edge of the continent
just above the tsunami line, I enjoy lots of 599 reports from Oceania. 

73, 

Ron AC7AC

-----Original Message-----
On Mon, Feb 20, 2012 at 8:18 PM, Ron D'Eau Claire <ron at cobi.biz> wrote:

Note that "No Tune" means, simply, "Fixed Tuned", set for a 50 ohm
> non-reactive load on each band. If we don't have an antenna reasonably
flat
> across the whole band we add an "Antenna Tuner" to the output which is
> simply moving the tuning we used to do on the xmtr output to an outboard
> box!
>

Not exactly. My "No Tune" ACOM 2000A will automatically handle up to 3:1
SWR on all bands except 160 where the limit is 2:1. Sometimes output power
is reduced, and sometimes an external tuner is helpful. but for the ACOM at
least, "No Tune" does not mean "Fixed Tune."

73,

Hank, W6SX

Mammoth Lakes, California

Elevation 8083 feet in John Muir's Range of Light
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