by svarc_admin | Aug 10, 2026
A directional antenna consisting of several elements arranged along a supporting boom.Unlike an antenna designed to transmit equally in many directions, a Yagi concentrates more of its signal in a particular direction and receives more strongly from that direction....
by svarc_admin | Aug 10, 2026
A unit used to measure power. In amateur radio, transmitter output power is commonly expressed in watts.A handheld radio might transmit only a few watts, while larger mobile or base-station equipment may be capable of considerably more. More power can help in some...
by svarc_admin | Aug 10, 2026
Very High Frequency. The radio spectrum from 30 to 300 MHz.The amateur 2-meter band is one of the most popular VHF bands. VHF is widely used for repeaters, simplex communication, satellites, digital communication, public service, and portable or mobile...
by svarc_admin | Aug 10, 2026
Ultra High Frequency. The radio spectrum from 300 MHz to 3 GHz.For many new amateur operators, the most familiar UHF amateur band is the 70-centimeter band. UHF is commonly used for local communication, repeaters, satellites, digital systems, and...
by svarc_admin | Aug 10, 2026
Standing Wave Ratio, often called VSWR. A measurement commonly used to evaluate how well an antenna system is matched to the transmitter and feed line.An SWR near 1:1 indicates a good impedance match. A high SWR can indicate an antenna, feed-line, connector, or...
