[Lowfer] Loop antennas

[Bill Ashlock]

Hi Bob,

>Has anyone checked the bandwidth of a tuned loop that you are using for
>transmitting? Curious what the 3dB bandwidths are running.
>Bob Roehrig  K9EUI

The Q of a normal 50/50 TX loop on the Lowfer band runs from 100 to over 200 
which is higher than most loaded vertical antennas when the soil loss is 
factored in. The latest 4x Litz conductor for WA has an Rac of .40 ohms 
including soil loss (fully dry condition). The Q would be ~(185k x 2 pi x 
100uh)/.4 = 290. The resulting bandwidth would be ~185k/290 = .64 kHz. Hmmm. 
Didn't I just read something about a 100Hz bandwidth in a certain FCC 
document?

Bill A


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