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.

1/2 Wave vs. 5/4 Wave VHF EZNEC Shootout

Longer is not always better in the world of antennas. Such is the case of the 5/4 wave vertical antenna… a Super J-Pole Wannabe Antenna