What does the manufacturer recommend? Would the 2:1 balun be for 100 ohms
rather than 25?
I would try to get feed point impedance to 50 ohms then use a standard 1:1
current balun or RF choke. A hairpin coil usually is a good device to set
impedance for a Yagi.
73, Keith NM5G
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of 30KR239 Fernando
Sent: Monday, December 12, 2005 5:35 AM
To: towertalk
Subject: [TowerTalk] antenna quiz?
Hello,
I´m in the process of buying a new antenna, an Optibeam OB10-3W. I´ve been
told that this antenna presents an impedance of 25 Ohms at the feedpoint
that´s what I would need to use the 5 Kw (2:1) balun from Array Solutions.
My questions are....isn´t it a too low impedance?...would it affects the
antenna´s performance on any way?...Thanks in advance. 73s!
EC1CT Fernando
E-mail: ec1cwg@dxhunters.com
URE & ARRL member
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
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