Greetings Antenna Mavens --
In my bailiwick, it is common for those working 160 m to use a long
sloping wire with a particularly long loading coil. Many use a 70 foot
straight wire to or from a 70 foot wrapped loading coil – sometimes
mounted as a single sloper worked against a tower, or as a dipole.
Some put the loading coil up close to the feed point, while others put
the loading coil at the far end, like at the far ends of a dipole, or
the bottom of the sloper. I have heretofore considered this a huge
loading coil, and they tell me that it resonates well because of the
length of the wire. I've always been skeptical of the real value of the
loading coil, but they swear by these things.
Would anything like this help in this case, considering the poster has
such a relatively short backyard area. I'm interested in the answer,
myself, because I have an even smaller backyard than he does, and would
also like to work 160 on a better antenna that I have now.
Any traction?
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Happy Trails.
======================= Richards / K8JHR =========================
On 4/8/2011 3:52 PM, Steve Hunt wrote:
Irrespective of the matching problem, such a short dipole is going to
give you very significant losses in the feedline. If you could lengthen
the dipole to 200ft, TLW predicts the open-wire loss would be much more
acceptable at around 0.7dB.
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