[Elecraft] K3: 630m amplifiers

[Edward R Cole]

With the recent expansion of use to 630m for the K3s and upgraded K3 
which only transmit at nom 1mw, a question arises:

Is there interest in a linear amplifier taking 1mw drive to produce 
either 25w or 100w?

I pick those two power outputs because with typically inefficient 
antennas on 630m 25w => 1w ERP and 100w => 5w ERP (approx).  These 
two ERP are mentioned in the WARC-12 band approval and FCC as 
possible max allowed power levels.  Currently the ARRL Experimental 
Group is approved at 20w ERP but there are not many stations running 
that in the group.  I run 100w with 0.1mw drive from my K3 for approx 
3w ERP.  1mw is typical output for mixers so the amp would be usable 
by low-power transverters, as well.

I am wondering what kind of interest there would be for a linear amp 
that could be driven by the K3s/K3?  I would probably have an 
optional Rx preamp in such a package.  No idea of cost at this 
juncture as its just in "maybe status".  Wayne has stated to me that 
Elecraft is not intending to build such due to the limited market.

73, Ed - KL7UW
http://www.kl7uw.com
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