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[TowerTalk] Trap resonance

To: <towertalk@contesting.com>
Subject: [TowerTalk] Trap resonance
From: seay@Alaska.NET (Del Seay, KL7HF)
Date: Mon, 11 Aug 1997 07:59:22 -0800 (AKDT)
Thanks, L.B.  I wondered why they did that. HyGain triband antennas
use traps resonant way below each band and it never made sense to me before.
Very interesting.  de KL7HF



At 11:52 AM 8/11/97 -0400, you wrote:
>O
>The selection of a frequency below the higher band limit is for a reason:
>to equalize the gains of the antennas.  Selecting a frequency for the
>trap within or at the low end of the upper band results in unequal gains,
>while going too low below the upper band also makes the gains unequal.
>something in the 90-95 percent of the lower end of the upper band tends to
>yield performance on both bands as listed.


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