Author: Stephen Reichlyn <Stephen.Reichlyn@ryansci.com>
Date: Mon, 17 Jan 2005 13:53:51 -0500
Gentlemen and Ladies of Towertalk: Anecdotal comments about antennas and their performance by the sea are many and sundry. I wonder if those who have experience with this phenomena can comments on th
At 01:53 PM 1/17/2005, Stephen Reichlyn wrote: Gentlemen and Ladies of Towertalk: Anecdotal comments about antennas and their performance by the sea are many and sundry. I wonder if those who have ex
I'll take a shot at some "qualitative" answers, based entirely on theory...Others will pitch in with practical experience, which ALWAYS varies from theory. Not nearly as much as for verticals. For ho
I'm not sure about the salt in the water. Maybe it does help. When I was based in Alaska I put a simple 4BTV vert with a 80M resonator on top (guess that made it a 5BTV) into the ground behind the Qu
Just as an idle question.. I wonder if the gain change is due to a pattern shape change (narrower main lobe), or due to a reduction in losses. The average gain number would tell you, since it's integ
If you flip the beam vertical, what happens to the pattern compared to running it horizontal. How does the pattern change as its lowered closer to the ground? salt Weather Stations", and lot's more.
Has anybody actually placed a REAL horizontal antenna close to salt water, then placed an identical REAL antenna back several wavelengths and A-B'd the difference over various times and propagation c
This experiment is tougher than it might seem, if you want real quantitative results. I've given quite a lot of thought to how one would do this sort of evaluation using beacon signals, etc. The real
Just as an idle question.. I wonder if the gain change is due to a pattern shape change (narrower main lobe), or due to a reduction in losses. The average gain number would tell you, since it's integ
salt dBi better the pattern is -0.06 Very interesting...In fact, the directivity is less with the salt water... The difference in foward gain is about 0.5 dB, but the difference in loss is 0.9 dB, so
Perhaps signals travel better over salt water? My single 4 element beams in Aruba seems to work much better than my 6 / 6 stacks in Illinois. John KK9A / P40A http://www.iguanavilla.com <snip> Very i
I have two close-spaced (30 km) QTHs One is inland, 30 km from the coast, city location, HF horizontal antennas 40m high (top of building) The other is just 200m from sea line, sub-urban location, si
I'm oceanfront here on Casey key Island in the Gulf of Mexico with Ocean or bay in all directions but NNW since the island runs toward that direction. I'm on the southern tip. Purely anecdotal, but I