[antennaware] Efficiency and losses

[Roger Wheeler]

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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