For those still waiting for, or building, their KXPA100, the effort
is definitely worth it.
I just returned from a vacation trip to St. Barths Island for 10
days, operating 'vacation styl'-intermittently, and took my KX3 and
KXPA100 with a small switch-mode supply from Powerwerx, operating
from a rented villa. Ran up about 2200 QSO operating late at night,
mostly, using a 33' telescopic pole supporting a variety of monoband
PAR/LNR EFZ antennas as FJ/N9SW. Output stayed right up at 100 Watts
all bands without a waver.
The amp worked great, never got too hot, and its integration with the
KX3 was smooth and efficient. Had everything but the pole packed in a
modest soft, padded test instrument case, which I successfully
checked through 3 different flights, no issues. Reasonable weight,
high performance. Perfect!
By the way, the LNR/PAR EFZ antennas were also super....1.2:1 or
better SWR on each of the bands I had with (40, 30, 20, 17 and 6),
right 'out of the box', Since the 40m model is 66' long, I ran the
wire through a round uncrimped crimp terminal that just fit over the
top of the pole, at about the 50% length point, and draped the
antenna like an inverted vee to the deck of the villa. This put the
feed point right at a comfortable level, and made no difference in SWR.
Nice work, Elecraft!
73, Gene N9SW
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