6m

Six metres (6 m) is a length equal to six times the metre, the base unit of length in the International System of Units (SI).

In telecommunications, 6m commonly refers to the six-meter amateur radio band, which spans roughly 50 to 54 MHz in ITU allocations and is allocated to the amateur service in many countries.

Propagation on 6m is variable and strongly influenced by solar activity. Sporadic E openings in summer can enable long-distance contacts, while daytime ground-wave propagation is typically limited to tens of kilometres. Space weather and geomagnetic effects can also affect signal reach.

Operation on the band includes voice (SSB and FM), Morse code (CW), and digital modes. Common antenna choices include Yagi arrays and verticals tuned for 50–54 MHz. Uses require an appropriate license where applicable, and operators must follow local regulations and power limits.