The dipole is one of the most popular antennas, especially in the low HF bands. The formula for a half-wave dipole is 468 divided by the frequency. Here is a dipole length chart. Frequency — Quarter Wavelength (ft) — Total Length (ft) 1.9 — 123.1 — 246.2 3.75 — 62.4 — 124.8 5.36 — 43.7 — 87.4 […]