Re: Topband: Signal attenuation from foliage near 160m antenna

2013-08-05 Thread Carl
This subject has been discussed here plenty of times in the past, and the consensus has always been that trees and other foliage near a 160m antenna has a negligible effect on the transmitted signal. That's what I have believed for some time. This was discussed last month at

Re: Topband: Signal attenuation from foliage near 160m antenna

2013-08-02 Thread Tom W8JI
This subject has been discussed here plenty of times in the past, and the consensus has always been that trees and other foliage near a 160m antenna has a negligible effect on the transmitted signal. That's what I have believed for some time. In this case, K9LA was talking about two things:

Re: Topband: Signal attenuation from foliage near 160m antenna

2013-08-02 Thread Guy Olinger K2AV
On Thu, Aug 1, 2013 at 10:21 PM, Mike Waters mikew...@gmail.com wrote: This subject has been discussed here plenty of times in the past, and the consensus has always been that trees and other foliage near a 160m antenna has a negligible effect on the transmitted signal. That's what I have

Re: Topband: Signal attenuation from foliage near 160m antenna

2013-08-02 Thread Jim Monahan
I live on several acres that is a watershed area with a relatively high fresh water table. Almost all of the land is densely populated with trees and some ranging up to a 100' or more. For transmit antennas on 160, I have an inverted L that goes up to 85' with 30 elevated radials. And, I also

Re: Topband: Signal attenuation from foliage near 160m antenna

2013-08-02 Thread Mike Waters
I *very much* appreciate the many replies to my post. I've known about the effect of foliage at VHF and above for a long time, but I think I've just learned something new and useful. :-) Since the vertical portion of my inverted-L is over 10 feet from the tall oak tree (and its leafy branches)

Topband: Signal attenuation from foliage near 160m antenna

2013-08-01 Thread Mike Waters
This subject has been discussed here plenty of times in the past, and the consensus has always been that trees and other foliage near a 160m antenna has a negligible effect on the transmitted signal. That's what I have believed for some time. This was discussed last month at

Re: Topband: Signal attenuation from foliage near 160m antenna

2013-08-01 Thread Bob Eldridge
Subject: Topband: Signal attenuation from foliage near 160m antenna This subject has been discussed here plenty of times in the past, and the consensus has always been that trees and other foliage near a 160m antenna has a negligible effect on the transmitted signal. That's what I have

Topband: Signal attenuation from foliage near 160m antenna

2013-08-01 Thread Bob Kupps
Interesting study which suggests not placing a 160m vertical closer than 12' to a tree, if feasible. There are certainly lots of vertical radiators working well amongst towers. We won FD 4 years in a row using 5 watts to a random vertical wire hoisted up the aluminum mast of a sailboat amongst

Topband: Signal attenuation from foliage near 160m antenna

2013-08-01 Thread Bruce
Subject: Topband: Signal attenuation from foliage near 160m antenna Without doubt foliage has measurable effects on the antenna when it is close to a voltage point (speaking from experience with loops), so Carl's findings make good sense. Bob VE7BS Detuning of low band mobile antennas