[Elecraft] EFHW
Brian Pietrzyk
ve3bwp at gmail.com
Fri Feb 10 10:36:28 EST 2017
Speaking of baluns or un-un's... I'm about to assemble a BL2 which is a 4:1. Will that be enough to bring an End Fed Half Wave (EFHW) within tuning range of my KX3 ATU?
I'm going to be ve3bwp/hi9 QRP week after next and hoping to try a couple of different length end feds into one of the trees near the beach. I'll be trying Phone and psk31/JT65/CW an afternoon or two that week. Anyone interested in a sked email me direct.
Brian ve3bwp
Date: Wed, 8 Feb 2017 16:33:25 -0700
From: Doug Person <doug at k0dxv.com>
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] EFHW
Message-ID: <f3448d0d-3be9-fa1a-07c8-b156bb74b5a2 at k0dxv.com>
Content-Type: text/plain; charset=utf-8; format=flowed
I have two EFHW antennas. One covering 40 and 20; the other 17. They are
mounted at about 40 feet and perform equal to regular dipoles. Feeding
them is therefore much simpler for portable ops since only one side
needs to be elevated. For portable use I feed them with about 20 feet
of RG/58a, although they can be attached directly to the radio. I find,
however, that a bit of coax causes them to be a lot less finicky. They
have been my field day and SOTA portable goto antennas for many years.
Transformers are not difficult to construct and there are some good
quality assembled products that are excellent.
Doug -- K0DXV
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