My first Rodeo on phasing, need confirmation please. I am working on 2 34' phased verticals spaced 34' for 40 meters pointing in a NE/SW line. SW ant we call #1 NE ant we call #2 I am wanting ONLY
It would be easier to just feed one vertical with a random length of 50 ohm coax and make the other vertical a parasitic reflector. John KK9A My first Rodeo on phasing, need confirmation please. I am
Usually people phase to get both broadside and endifre type patterns. It sounds like you would just like to get some gain toward EU and KK9A's idea is probably sufficient. Mike W0MU W0MU-1 CC Cluster
There are 2 disadvantages to that. 1. The front to back will be 10 dB at best, whereas with a driven array you can easily get 20 or 30 dB. For receiving purposes, a driven 2 element array is as good
Rick, One last thing: the BEAMWIDTH will also be broader with the driven array. 73 Don N8DE _______________________________________________ _______________________________________________ TowerTalk m
And on 40 you are likely too find the f/b will be far more helpful than gain in the forward direction. Plus the verticals will discriminate against state side QRM. Been there and done that. 73 Roger
I have never modeled the two driven element configuration so this is interesting data Rick. I am not sure how important F/B is in TX. I suggested a simple alternative of feeding only one vertical. As
Bob, This is almost ok, but using 468/f is a typical length for a half-wave dipole including the shortening due to end effect (-5%). At 7.15 the wavelength is 983.571/7.15 = 137.56 feet. In your coax