Tuning a Telrex 10M523 (Telrex 5 element beam on 23 foot boom) After several days of work on the ground working with the matching system and trying multiple combinations of driven element length to t
Isn't the match used on the Telrex antennas a T-Match? That would require a 4:1 balun (Telrex used a coaxial 1/2-wave balun). 73 Don N8DE Tuning a Telrex 10M523 (Telrex 5 element beam on 23 foot boom
Hopefully, you are taking measurements with the aerial clear of the ground, and pointing skywards ? Otherwise ground proximity will make an impact. John G4ZTR Tuning a Telrex 10M523 (Telrex 5 element
Are you using the 1/2 wl coax match? Is there anything nearby that may be detuning the antenna? I have owned several Telrex monobanders, they are indeed robust and the SWR was OK at resonance using t
The Telrex has the 4:1 Balun achieved by connecting the phasing lines to the T feed system as shown in the pictorals of their manual. You should feed the system with a ½ wavelength or full wavelength
Additionally, I would connect the analyzer with a half wave length of coax instead of the 4 foot piece. The half wave length will reflect what the actual impedance at the antenna feed is. The 4 foot
Author: TexasRF--- via TowerTalk <towertalk@contesting.com>
Date: Thu, 3 Jul 2014 10:32:19 -0400 (EDT)
The half wave multiple is certainly needed for taking R +j measurements. For simple vswr measurements the vswr is not changed by the line length as long as line losses are low. This is assuming 50 oh
I had a friend spend hours trying to match an antenna with a short piece if coax. Turns out his proximity to the antenna caused the SWR to be high. When he installed a 1/2 wave length if coax and too
I did not notice the 4 foot coax when I first read the post. This is likely too short for a rotator loop and it makes me wonder if the antenna is being tested on saw horses near the ground. I just ch
That sounds like the solution. -- Wes Attaway (N5WA) -- 1138 Waters Edge Circle, Shreveport, LA 71106 -- 318-393-3289 (Cell) -- Computer Consulting and Forensics -- EnCase Certified Examiner -- I did
On 7/2/2014 8:20 AM, Ray, W4BYG wrote: Additionally, I would connect the analyzer with a half wave length of coax instead of the 4 foot piece. The half wave length will reflect what the actual impeda
Subject: Re: [TowerTalk] Advice Wanted-Tuning A 10 Meter Telrex Beam The half wave multiple is certainly needed for taking R +j measurements. For simple vswr measurements the vswr is not changed by t