Level 2 · Lesson 2.2

Modes of transmission

Jimmy Bob, a friendly cartoon mountain man in a trucker cap and overalls

“There is more than one way to skin a signal.”

You'll be able to

name voice, Morse, and digital modes and when each is used.

is the standard for local VHF and UHF voice. Single sideband () is the standard voice mode on HF because it uses less and power; by convention upper sideband is used above 10 MHz and lower sideband below. is , which gets through when voice cannot. Digital modes include for weak signals and and for digital voice.

Tap an underlined word for its meaning.

Try it

On-air activity

listen to audio samples of FM, SSB, CW, and FT8 and identify each.

This one happens on the air in The Shack, which opens in a later phase.

Quick check

Get 2 of 3 right to complete the lesson.

1. The standard voice mode on HF is…
2. By convention, above 10 MHz hams use…
3. FT8 is best known for…

Modes of transmission

You'll be able to

Try it

Quick check

Words from this lesson