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 the factory settings.
Unfortunately the equally spaced elements prevent the antenna from having
good bandwidth.
John KK9A
To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: [TowerTalk] Advice Wanted-Tuning A 10 Meter Telrex Beam
From: James Archer <James.Archer@erm.com>
Date: Wed, 2 Jul 2014 13:57:50 +0000
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 the Telrex match
position-the best we can get is an SWR of 2.3 at 28.500. We are using an MFJ
tuner through a 4 foot piece of coax to the antenna. Antenna has a tuned
matching stub set for 28.500.
We have followed exactly the specifications from the 5 page Telrex
instructions
that are beautifully illustrated.
This is a wonderfully built antenna and we are very keen to get this tuned up
right and in the air working!
Anyone have any golden words of advice, we are of course looking to get
the SWR
down below 1.5:1 at 28.500
Thanks in advance for any help you can provide. Replies to N3ZS at
james.archer at erm.com
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