by svarc_admin | Aug 10, 2026
A low-frequency tone transmitted along with an FM signal and commonly used to access repeaters or control a receiver’s squelch.You might see a repeater listing show something like Tone: 100.0 Hz. PL is another commonly used name for this kind of tone. Your radio...
by svarc_admin | Aug 10, 2026
A general call inviting any station to respond.If someone says “CQ, CQ, CQ. This is W3ABC,” they are essentially saying, “I’m looking for someone to talk to. Is anyone listening?”
by svarc_admin | Aug 10, 2026
An organized operating activity in which amateur radio operators try to make contacts according to a particular set of rules.Some contests involve contacting as many stations as possible, while others focus on certain bands, modes, countries, states, or other...
by svarc_admin | Aug 10, 2026
The unique combination of letters and numbers assigned to an amateur radio station. Operators use their call signs to identify themselves on the air.Examples include formats such as W3ABC, KC3XYZ, or N1ABC.
by svarc_admin | Aug 10, 2026
The amount of frequency space occupied by a radio signal. Different modes use different amounts of bandwidth; a voice transmission, for example, generally occupies more spectrum than a narrow CW signal.
