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To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
From: "mgoins" <mgoins@mail.ev1.net>
Reply-to: mgoins@mail.ev1.net,Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Wed, 1 Feb 2006 22:31:11 -0600
List-post: <mailto:tentec@contesting.com>
Sure hate to jump into this, but I've used a number of good tuners over the 
past 28 years (and a number of lousy ones) with 100% homebrew antennas. You 
"tune" a feedline, in a relatively traditional fashion, by shortening it or 
lengthening it. That is more-or-less what occurs within a tuner (transmatch, or 
whatever) as more or less coil (length) is added or subtracted and some 
"tuning" by length adjustment is taking place. 

So the antenna really is actually "tuned" (at least a little, for what that 
really matters). It is effectively lengthening or shortening the antenna 
somewhat by adding coil length in or out, in a manner similar to adding in a 
length of wire or coax (or a loading coil), thus effectively adjusting the 
antenna for length slightly (and at the same time, adjusting it for final 
impedence seen as the impedence changes with length). 

The balun effects an additional impedence change, and that also "tunes" the 
antenna (for want of a better way to state it) from an impedence matching 
standpoint. That's why sometimes a 1:1 balun works and sometimes a 4:1 balun is 
required (so that the final impedence seen can fall within the matching range 
of the particular tuner).

It's all in what someone wants to call "tuning" and, whatever or however you 
want to explain it, "tuners" (transmatches, or whatever) allow a load to match 
the impedence the rig wants to see so that power can be transfered to an 

They work, but that said, they are also not the answer to sloppy antenna 
design, and I think that is where a lot of the personl polarization regarding 
the effectiveness of them comes from. The end effectiveness of any antenna is 
going to be related to wire diameter, length, wire type, connections, height 
above ground, etc. - all the things that always affect any antenna's impedence 
or effectiveness. If what is there is outside the adjustable range of a tuner, 
no matter what tuner it being used, it simply won't work well. If it is within 
range (and the antenna is of some solid design and the tuner is reasonably 
efficient), it will. A tuner might match any length of coax (or whatever 
feeder) into a good dummy load, but that doesn't make it an antenna.

Some guys have had great results with "tuners" - some don't. I have had (and 
I've also designed antennas that could not be matched). Depends on so many 
factors that I feel this type of community polarization has taken place over 
the years simply as a result of how effective (or ineffective) the results have 
been for the end user. What you can it, to me, is inconsequential.

One opinion. Mine. Works for me.

one watt all the time

---------- Original Message ----------------------------------
From: "mgoins" <mgoins@mail.ev1.net>
Reply-To: <mgoins@mail.ev1.net>
Date: Mon,  5 Dec 2005 12:00:15 -0600

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