Ham Radio Tools Antenna Length Calculator Estimate starting lengths for common ham radio antennas from frequency. Calculate half-wave dipoles, quarter-wave verticals, full-wave loops, end-fed half-wave wires, 5/8-wave verticals, and custom wavelength fractions in feet and meters. Wire antenna length diagram A simple ham radio antenna diagram showing a center-fed dipole, a vertical antenna, and radio … Read more
Ham Radio Tools Coax Electrical Length Calculator Calculate the physical length of coax needed for a target electrical length. Enter frequency, coax velocity factor, and phase length to find quarter-wave, half-wave, full-wave, or custom cable sections for ham radio feedlines, stubs, and phasing lines. Coax cable with wavelength marks A coax cable path with quarter-wave, … Read more
Ham Radio Tools Coax Loss Calculator Estimate how much transmit power is lost in a coaxial feedline before it reaches the antenna. Enter the operating frequency, coax type, cable length, and transmitter power to calculate line loss, antenna-end power, efficiency, and heat lost in the cable. Transmitter, coax feedline, and antenna A station diagram showing … Read more