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[TenTec] Resonant antennas

To: Jim Brown <jim@audiosystemsgroup.com>, tentec@contesting.com
Subject: [TenTec] Resonant antennas
From: Ken Brown <ken.d.brown@verizon.net>
Reply-to: tentec@contesting.com
Date: Sat, 04 Sep 2004 12:01:52 -1000
List-post: <mailto:tentec@contesting.com>
This is not a Ten-Tec specific topic, however.....

And, of course, he/she needs to know how to change bands and load the antennas (which ought to be resonant).

While there may be some reasons that it is "nice" or "convenient" to have antennas resonant, it is absolutely not necessary. I does not even make them work better in some instances, or significantly better in most instances. Yes, the transmitter should have a load which is not too far from being the right impedance and low reactance (50 ohms for most rigs these days) This can be accomplished using a tuner, making the antenna system (antenna, feedline and tuner) not necessarily the antenna by itself, resonant. Or it can be accomplished by using a wideband antenna, such as a discone or log periodic, that has such a broad flat impedance curve that it can hardly be called "resonant" at all. A lossy antenna ar a dummy load is another way, but of course not the best.

Ken N6KB


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