Be very careful to wash the antenna, insulators and exposed coils and
connections with fresh water and dry them after each use. It only takes a
couple of hours to build up a layer of conductive salt crust on any exposed
surface, even when it's way above the water line. That bracing salt air
you
The $25 KD1JV Tenna-Dipper http://www.4sqrp.com is a lot smaller
than a MFJ-259 and works great for tuning the MP-1. I took mine to
France along with my K2 last spring. Airport security didn't say a
thing, although they ran the bag with the K2 through some sort of
detector.
Bob, N7XY
On Mon,
Fred Jensen wrote:
2. As with all antennas, I can tune the antenna for a variety of
resistances and reactances. I've been shooting for an impedance
magnitude of around 50 ohms. Possibly some combination of R and X is
more optimum?
The ideal is a resistance of 50 ohms and reactance of zero.
Alan's Balun from WB6ZQZ will help low impedance antennas such as
electrically short verticals, and is an easy build. Placed at the
antenna base and hooked to coax with a BNC connector, it will reduce SWR
on the coax feed, and ease the matching job of the KXAT1 at the rig end
of the coax.
Folks,
Of course Lee is correct, but the range of the KXAT1 should also match a low
impedance - and short antennas do produce a low impedance even if the
reactance is close to zero.
Whether you need a 'unun' (unbalanced 'balun') at the antenna or not depends
a lot on the length of the coax
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