[Antennas] Twin lead 450 Ohm

2002年12月19日 14:25:51 -0500

Ok now that we had all of the "theory" on to reality.
I have a installation that WORKS and has worked for the last 5 years,
behind my "summer" home I have a rather large pond/lake unfortunately
the location of the house and the XYL did not want any seen antennas.
I constructed a 160M zepp using black jacketed multisrand wire this
connected to about 250 feet of KW rated 300 ohm twin lead ran the antenna
N-S across the pond with the feed line drooping close to the water and on
to the bank, trenched in a 70 foot section of black sprinkler pipe all
the way to the foundation of the house (drip loops put in and packed with
glass for the critters) this is hooked to a Johnson matchbox and then to
my travel rig.
Never did any SWR testing on the setup but the setting on the matchbox
did not vary much from season to season on the bands that I built a chart
 for and yes it works like gang busters, the funny part was that some
time in one of the storms in February the support lines for the twin-lead
snapped and the feed line went into the drink (about 120 feet) I noticed
this when I made my fall bird check and it was a bit cold to try to fix,
did not notice any great difference in performance of settings with that
chunk in the water.
73's Steve
 oo
 (__) AB2ET
 "I bet two extra terrestrials"
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