Just a thought I have always heard the tuner at the feed point of the antenna
defined [SGC] as a coupler. Because it is making a tank circuit at the feed
point of the antenna. Now the 'Tuner' when it works takes in both the
antenna and the coax as what it sees as the load. The coupler has some trouble
tuning if in fact it is far from antenna. I have also heard the coupler is
better than tuner and tuner is better than the coupler, but no matter for this
discussion.
If the radio has an internal tuner and the output of radio is feeding a coupler
at the feed point of antenna isn't the system going to be a little odd trying
to adjust for each other? I would think you need a reliable way to lock either
one of them out and let signal do a pass through.
Just my thoughts..
73
Chuck AA8VS
Date: Sun, 26 Oct 2008 16:49:31 -0600
From: Dale Putnam <[EMAIL PROTECTED]>
Subject: RE: [Elecraft] ATU vs. External Tuner
To: Sandy <[EMAIL PROTECTED]>, John Buck <[EMAIL PROTECTED]>, Frank
MacDonell <[EMAIL PROTECTED]>
Cc: Elecraft <[email protected]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"
The balanced antenna, center fed, with balanced line, is the lower loss system
of many. The fun part... is that while looking for inexpensive feedline, I've
found that the "poor, fast replaced" speaker lead wire... you know the stuff,
clear, copper, and only two conductors, work out very nicely for an antenna. In
fact... a broad banded, dipole can be fashioned out of that wire, with the
two elements having the ends twisted together, and still using just one run of
the wire for feed, works right nice. The balanced line feeds through walls and
up past the insulation nicely too. And the T-1 tunes it real nice. --...
...--Dale - WC7S in Wy
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