Ever since I have put up two inv-Vs, one for 80m and one for 160m, with their apexes at roughly 90', I have been puzzled by their exceptional performance. Ditto for my vertical on 40m. I have done t
Rudy, I have a similar situation. My QTH is on a glacial moraine about a tenth of a mile from the crest. There is water bearing clay less than thirty inches down and the soil is the black muck left b
Gary, You made a brilliant point! If the same effect applies to the 4SQs, they should perform incredibly well. Rudy N2WQ I believe the high water table helps me and will help you.... but the advantag
KS8S/AD8P had a contest station in Deshler, Ohio in the mid 80's (about 1 hour South of Toledo). With just a ~100' shunt-fed tower they seemed to have a stand out signal on 160 meters compared to oth
I do not think fresh water has much effect on verticals and even less on horizontal antennas. John KK9A Ever since I have put up two inv-Vs, one for 80m and one for 160m, with their apexes at roughly
depends on how much water and how deep. That epsilon of 80 for water makes a huge difference. If nothing else, it will reduce ground losses. Remember that "skin depth" at HF in soil is many meters,
So, what is a desirable skin depth- low or high value? Rudy N2WQ Sent using a tiny keyboard. Please excuse brevity, typos, or inappropriate autocorrect. ______________________________________________
It depends on the loss. A shallow skin depth is usually better, since you get shallow depths with high conductivity (e.g. copper is better than brass, and has shallower skin depth). The real issue is
I think that would be true for a fresh water lake, John. OTOH, I would expect the the conductivity of water saturated soil to depend heavily on what materials dissolve into the water from the dry soi
Actually, it's the size of the soil particles that seems to be the biggest effect, RF-wise. Fine Clay is very different than coarse sand, for instance. Partly it's also that clay can hold a lot more
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Mon, 04 Nov 2013 10:42:53 -0500
You said what I was going to say, but used far fewer words. 73 Roger (K8RI) <snip> _______________________________________________ _______________________________________________ TowerTalk mailing li
If that water table is salt water then maybe yes... Fresh water doesn't really make that much difference until you get to 160m . YMMV, Dave Wa3gin Sent from my iPad Be Prepared Stay Prepared ________
I am fortunate enough(except during really high tides) to live on a salt water canal. If I dig down about 18 inches I hit water. Yes my verticals with the bases down about 5 ft, hear and radiate well
Not to mention your location in W2 or W8 land! You have no idea how hard it is to work DX on 160 meters from the Pacific northwest. 73 Jim W7RY John KK9A Ever since I have put up two inv-Vs, one for