As the original poster under this heading I figured you might be interested
to know what I have achieved so far, even though I am not yet ready to send
the white smoke up the chimney. Briefly, my problem was that my KAT500
would go into uncommanded tunes during a QSO, usually on digital modes.The
Ray,
Very interesting stuff, thanks. As the user of an off-center fed doublet
myself, I was initially very nervous of running more than my usual 100W.
As it happened, I need not have worried, as I have never experienced the
problems you describe with the arrival of the KPA/KAT500. The reason
I don't believe it is an antenna or stray RF problem.
I have memorized tuner settings for the entire 75 meter band at 20 kc
steps. The K-Line is set up per instructions (although the manual
supplied by Elecraft is a little thin).
When I QSY, the KAT500 will click to a memory when I transmit
If I may, I would like to weigh jn here wjth what I have been using.
I put up an OCF of 137ft approximately (memory issue) with the feed point
up about 37ft. I am set at 80/20 offset and I am using the dual core balun
from Balun Designs (usual denials...yada yada yada) and I have very few
issues
An OCF is an unbalanced antenna and it must have a choke to keep RF off
the feed line into the shack. I use about ten turns of coax on a 4 inch
PVC pipe right outside the wall where the feed comes into the house. It
might be more or less, I am not at home to look. You can research it.
Other
I have used OCF antennas in the past and currently have on up that is
fed with 600 ohm line and a balun for the coax transition to come in the
house. It is a fine all band - 160-10 - antenna causing no RF problems
in my shack. Although I rarely use this antenna, I hooked it up today
and find
If you are working the bands 30m and below and have the room you can
use inverted V antennas that all have the same feed point. The power
will be distributed to the the antenna that is resonent at the
transmit frequency.
Until I was able to get room and funds for rotable antennas and
longer wire
7 matches
Mail list logo
