73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com I bought an Ameri
Pete: I did almost the same thing on my tower with the rotator control cable. Underneath the rotator shelf and just before the cable enters a steel box at the base of the tower, I formed a four-turn
Decades ago in the SBS lab we were trouble-shooting a freq. lock problem with the rubidium clocks we used for the satellite switches. Randomly the clocks would loose sync causing the switch to drop o
I believe I remember that the old Polyphaser manual had some info about coax loops and bends. The idea is simple, and makes sense, because the grounding at the tower and at the entrance to your house
In this case they are just fancy drip loops. Note the original description, loops of coax just before connection to a remote relay box. Hopefully the coax shield is connected to the case ground which
Author: "Jim Miller KG0KP" <JimMiller@STL-OnLine.Net>
Date: Thu, 27 May 2010 09:08:01 -0500
ISTM the inductance created with a million volts of lightning strike would be significant even in two turns of coax. Give it some place to jump off to ground too (lightning arrester, spark gap hi hi
I bought an Ameritron RCS-10 antenna switch at Dayton, and in reading the manual (please, no giggling) I note that it calls for a two-turn loop in each antenna coax line just before entering the rela
Actually, Polyphaser recommended against putting loops in the coax line. The thought was that a loop would greatly increase the field and act as an antenna that would increase the chances of induced
The problem with loops, or I should say the potential problem with loops is lightning does not like to travel in circles.Give it a corner or curve and it's likely to get off the conductor and go some
Uhhh... I'd kind of like to see a physics explanation of not like to travel in circles or bends and getting off and going somewhere else. A loop has inductance. There will be some amount of voltage d
Well, lightning likes to take the shortest path although that may not be a straight line Any conductor, straight, bent, circular, or crooked has inductance. The rise time of a pulse creates a reverse
I bought an Ameritron RCS-10 antenna switch at Dayton, and in reading the manual (please, no giggling) I note that it calls for a two-turn loop in each antenna coax line just before entering the rela
A bit anthropomorphic isn't it.. I think a fairer statement is that lightning is an electrical current, and it distributes according to the impedances. "take shortest path" leads folks to believe tha
Wasn't intended to be. Agreed I forgot to add this is also dependent on the huge current within the stroke which may not be in the initial stroke. Worded better than I did, but I think the potential