Just passing along some information that might be of interest.
I have the K3 with the auto tuner built in. My antenna is a Cobra Ultralite
fed with ladder line. I can switch between a Johnson Matchbox and a BL2
balun/KAT3 to feed the antenna. I previously had adjusted the feedline
length so that the Matchbox would find a 1 to 1 match on all bands 80
through 10 including 30, 17, and 12 meters. I have received many good signal
reports on all bands with either matching system.
<snip>
Happy 4th of July.
73,
John W2XS
I have the same antenna, the Cobra Ultralite with window line, and
simply connect the two ends of the window line to an SGC-230
automatic tuner http://www.sgcworld.com/230ProductPage.html which is
mounted outside. I have the tune power of the K3 set to 3 Watts. No
balun required. Works great, 80 through 10.
Paul N4LCD
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