NVIS Gain of Loop and Dipole vs. Height
Observations from the Virginia QSO Party confirm simulation results concerning horizontal antennas and NVIS propagation.
loop
Loop antennas… often full-wave loops.
40m Loop Ground Wire Test
In the name of science I cut the wire laying on the ground underneath my 40m fullwave horizontal loop to see what would happen.
Use a loop if you can
Which full-wave loop to try first: 40 meter, 80 meter, 160 meter, more?
NVIS 80m with 160m Full Wave Loop is less than ideal
Big HF loop antennas provide great performance, but they can’t do everything. 160 meter full wave loops won’t work well for NVIS when used at 3.8 MHz.