Any series resistance or inductance will slow the incoming wave down and increase the tilt and the length where it reverses direction can be calculated since a 50% VF is the crossover point. A Beverage by definition is a slow wave antenna.
I use 2 types of military telephone wire for 5 reversible 2 wire Beverages. One is a copper/cadmium alloy and the other Im not sure but its the common WD-11A that many use. At 500-900' they seem to be no different than predicted. I find 60dB nulls a bit of a stretch on a regular basis on any sky wave signal. Some here may have hit 40 on a fluke but 20-25dB seems average and with some a bit worse. Carl KM1H ----- Original Message ----- From: "Bruce" <k...@myfairpoint.net> To: <topband@contesting.com> Sent: Thursday, December 29, 2011 6:23 PM Subject: Topband: Galvanized Beverage antenna wire inquiry > Early in 2007 I took a survey about Beverage antennas on this reflector. > /archives//html/Topband/2007-02/msg00062.html > > Earl K6SE (sk) was the one making exact termination test on his 7' above > the ground Beverages. He was using AWG 17 galvanized steel electric fence > wire, the longest (1100 FT.) achieving 60 db front-to-back and 60-db > front-to-side. He replaced the galvanized wire with copper wire, but did > not achieve near the same results, so went back to galvanized. In > additional emails, Earl believed that it was the resistance of galvanized > wire, making unwanted signals travel twice the resistive distance. > > Has anyone else done Beverage wire comparisons, and what results? > > 73 > Bruce-K1FZ > _______________________________________________ > UR RST IS ... ... ..9 QSB QSB - hw? BK > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1416 / Virus Database: 2109/4110 - Release Date: 12/29/11 > _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK