by svarc_admin | Aug 10, 2026
Summits on the Air. An amateur radio activity involving portable operation from qualifying mountain summits.It shares some similarities with Parks on the Air, but its locations and award system are based around qualifying summits.
by svarc_admin | Aug 10, 2026
Single Sideband. A very common voice mode for long-distance amateur radio, particularly on HF.SSB uses radio spectrum and transmitter power more efficiently than conventional AM voice. There are two forms: USB and LSB.
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
Upper Sideband. One of the two forms of single-sideband voice communication.USB is conventionally used for SSB voice on several higher-frequency HF bands and for SSB operation on VHF and UHF.
by svarc_admin | Aug 10, 2026
Coordinated Universal Time. A worldwide time standard used extensively in amateur radio.Using UTC avoids confusion when operators in different time zones record contacts or schedule international activities. Radio logs often record both the date and time in UTC.
