Re: Topband: Prince Edward and Marion Islands, ZS8

2013-08-02 Thread Raoul Coetzee
I managed to work David on 160m ssb, it is sort of in my backyard. But even then, the qso was not easy. I gave him a CW key before he left but I doubt if he will try to use it. There are always a team on Marion Island but since about four years ago, they are not allowed to add any more antennas th

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) tha

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 ha

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 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 > believed for some

Re: Topband: Prince Edward and Marion Islands, ZS8

2013-08-02 Thread James Rodenkirch
OK - found out they will be on the Island(s) for a work assignment...thanks to all that sent me the info! 72, Jim R. K9JWV > From: rodenkirch_...@msn.com > To: topband@contesting.com > Date: Fri, 2 Aug 2013 12:18:25 -0600 > Subject: Topband: Prince Edward and Marion Islands, ZS8 > > This from

Topband: Prince Edward and Marion Islands, ZS8

2013-08-02 Thread James Rodenkirch
This from the ARRL DX news e-mail: PRINCE EDWARD AND MARION ISLANDS, ZS8. Nadia, ZS8A plans to soon be QRV from Marion Island. In addition, Carson, ZS8C and David, ZS8Z are active as time permits. QSL via operators' instructions. BUT - I can't find a web page (looking for band plans, etc.)

Topband: Tree conductivity

2013-08-02 Thread Rudy Severns
Some time ago I attempted to make direct measurements of the HF conductivity of trees, at least for the trunk and limbs. I simply put a two rings, with nails to penetrate through the bark, around the trunk spaced a couple of feet apart. Basically what I had was a resistor. I then measured the

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: 1.)