FM voice
Common on local VHF/UHF repeaters and simplex. Easy to use, good audio and well suited to mobile/handheld operation.
Modes & Digital
Voice is only one way to use a radio.
A ham station can carry speech, Morse code, keyboard text, position reports, images, telemetry and computer data. Some modes are made for conversation; others are built to pull useful information out of signals almost buried in noise.
What is a “mode”?
Hams use the word mode in more than one way. It can mean a modulation method such as FM or SSB, or an operating method such as voice, CW, RTTY or FT8. The practical question is: what information are we trying to send, and how are we putting it onto the radio signal?
Your license privileges and the band you are using determine what is permitted. The point of this page is to show the possibilities, not to suggest every mode belongs on every band.
Common families
Pick the mode for the job.
SSB voice
A bandwidth-efficient voice mode used heavily on HF and for weak-signal work. It is one of the main ways hams make long-distance voice contacts.
CW / Morse
Simple, narrow and effective. CW can make contacts under conditions where wider modes become difficult, and it remains popular for DX, contests and low-power operation.
FT8 and weak-signal digital
Software synchronizes short structured transmissions and can decode signals too weak for comfortable voice communication. FT8 is widely used for DX and award chasing.
Packet & APRS
Packet sends information in blocks of data. APRS builds on packet techniques to share positions, objects, messages, weather and other real-time information.
RTTY and keyboard modes
RTTY is a classic digital mode still used in contests and DX. Other modes support keyboard-to-keyboard conversations and data exchange under difficult conditions.
SSTV and image modes
Slow-scan television turns pictures into audio-frequency information that can pass through an ordinary voice radio channel. It is also used during some special ISS events.
Telemetry
Satellites, balloons and experimental stations can transmit measurements such as temperature, voltage, position or system status for other stations to receive and decode.
WSPR
Weak Signal Propagation Reporter transmissions are designed to reveal propagation paths with very low power. You transmit a tiny beacon and see where in the world it was heard.
What changes from mode to mode?
Bandwidth, speed, robustness and purpose.
VoiceNatural conversationFast human interaction
CWNarrow and efficientExcellent weak-signal utility
DigitalComputer-assisted encoding/decodingText, data, images, telemetry or structured contacts
There is no universal “best” mode. A local repeater chat, an emergency message, a contest exchange, an ISS image and a barely detectable DX signal are different problems. Amateur Radio gives you a toolbox instead of one answer.
A beginner-friendly path
You can add digital one piece at a time.
- Learn normal radio operation first. Know your frequency, band privileges, power and operating etiquette.
- Connect the radio and computer. Modern radios may use USB directly; older stations may use an audio interface and separate control connection.
- Choose one mode. Learn one workflow instead of installing everything at once.
- Watch what the software is showing you. Waterfalls, decoded text, signal reports and timing information make invisible signal behavior visible.
- Keep the radio rules in the loop. Digital still uses RF spectrum and still has identification, band and emission requirements.
Good outside references: ARRL Modes & Systems, ARRL Digital Data Modes, and ARRL APRS overview.