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[antennaware] Efficiency and losses

To: <antennaware@contesting.com>
Subject: [antennaware] Efficiency and losses
From: r_wheel@yahoo.com (Roger Wheeler)
Date: Thu, 24 Sep 1998 08:31:55 -0700 (PDT)


I am trying to quantify the efficiency of trapped h.f. antennas
references tell me that -traps are lossy and trapped antennas are
inefficient.I cant find a reference to the typical efficiency, is it
20% ,40% or is it 90%?

Any ideas on measuring the loss resistance of an hf trap.For example I
used a Q Meter to measure the resistance of a 40/80m trap at
3.65Mhz(where the losses are dominated by the L).
nybody any other ideas please
Roger G3MGW

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