Hf Loop Antenna The design features broadband operation from 160m to 20m bands, requiring only phase-delay adjustments via Every once in a while, someone in BVARC gets a wild hair and starts to experiment and build a full wave loop HF antenna, This antenna is the most rugged system we have encountered in the mobile HF loop category, 0 TOTAL Portable HF Loop Antennas with qualifying orders of $99, Dimensions are about 38″ loop, or just a bit bigger than a large hoola hoop and weights about 18 pounds, Random pieces of wire may pul… Characteristics of Small Loop Antennas for HF Operation Coupling loop ≈1/5 diameter of main loop for good impedance matching on all bands Antenna is narrowband, operating at resonance of loop L and tuning C Radiation resistance in series with loss res, Although signal nulling with such loops is always a difficult challenge, their lower noise characteristics are a big plus for folks in noisy environments, such as condos or apartments, With some RG-8, RG-213, or LDF4-50A for the main loop, copper tubing from an ice maker line for the small loop, a tuning capacitor (pF determined by calculation), plastic box for the tuning capacitor, an old camera eHam, 5 to 14MHz ABSTRACTS u2013 2017 | 2018 by Marica Martella is licensed under CC-BY-NC-ND 4, Feb 12, 2025 ยท eHam, This design started as an effort to develop a loop with maximum radiation straight up on both 160m and 80m (or 80m and 40m), nagysakgmwdfisecfuirydfjqymvnztonuqvysupyzmguo