EDDY,
IMHO you are much better using a ballanced tuner with an UNUN on the
transmitter side. You will get a better match over a wider impendence AND a
wider frequency range provided you choose the correct capacitor and inductors.
I used this with my loop and also an openwire fed dipole with NO problems and
no RF running rampant in the shack. This is the only place that I will put an
UNUN in the shack and only because I can not locate the tuner outside (its not
remotely tunable) If I could find some flat ribbon wire I would wind my own
inductor and add a motor to it to tune it remotely.
Jim
http://www.qsl.net/wa3mej/index.htm
----- Original Message -----
Message: 1
Date: Tue, 28 Aug 2012 14:29:16 -0400
From: Eddy Swynar <deswynar@xplornet.ca>
Subject: Topband: Wideband Balun...?
To: topband@contesting.com
Message-ID: <8DDEB9C9-BD09-43A6-8E9C-6CE25044C0F7@xplornet.ca>
Content-Type: text/plain; charset=us-ascii
Good Day All,
I am thinking of incorporating a homebrewed 4:1 balun as part of a transmatch
that I have here, which was designed to feed coaxial cable-fed antennas only...
Is there really & truly such a thing as an air core 4:1 balun that will cover
the entire spectrum from 1.8- to 29.7-MHz...? I've looked & I've repeatedly
searched on the internet, but can not quite come up with such an animal. Maybe
the frequency range of such a beast is far too great for any practical
design...
Anyone have any leads in this regard...?
Thanks in advance, & vy
~73~ de Eddy VE3CUI - VE3XZ
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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