To: | <tentec@contesting.com> |
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Subject: | [TenTec] "A low vswr will kill you ! " |
From: | geraldj@ames.net (Dr. Gerald N. Johnson, electrical engineer) |
Date: | Wed, 24 Jan 2001 10:30:24 -0600 |
Hertz didn't REQUIRE a resonant radiating element but that resonant radiating element was his only frequency determining element in his experiments. Radiating elements don't need to be resonant to function, but generally the resonant radiator is more effective because there's more current circulating and its the current (moving point charges) that does the work. The voltage parts of the antenna mostly just help it resonate. One way of defining resonance is that the circulating currents are larger than the applied currents. The maximum response usually coincides with voltage and current in phase, e.g. phase angle = 0 or power factor (in power systems) = 1.0. 73, Jerry, K0CQ -- FAQ on WWW: http://www.contesting.com/FAQ/tentec Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com |
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