Shortening wires, or adding length to wire antennas. A simple method to calculate length.
Dimensions for the inverted V antenna from 160 to 2 meters by N6JSX
This is a portable dipole I built for 20 meters. It works great. The SWR is really low. I would not recommend this for permanent use just because it is not build like a rock. It will do just fine for portable in the field operation. It is a great backpacking antenna. I only used
The antenna above has been described by Nadisha, 4S7NR and may be of interest to anyone wishing to get on 80M (3.5MHz) that have limited space available. L1 is 12 feet. L2 also is 12 feet and the overall length is 48 feet. The two loading coils are described as 67.83uH and can consist of
How to setup a long wire antenna
A comparison of the Buddipole Antenna vs a 20/40 home made dipole
A rotatable dipole antenna project by KQ6RH