SCAMP
A family of simple keyboard modes designed for weak-signal chatting.
ModeSCAMP
FamilyFSK data
Audio example12 s
What does it sound like?
Plate 56FSK data
A plain two-tone or on-off keying pattern, slower than RTTY.
0 Hz1,0002,0003,000 Hz
12-second example. A clean example made by our own signal generator; signals on the air usually sound noisier.
Field marksA newer keyboard mode for short contacts
Who uses it?
Amateur radio experimenters.
Where and when can I hear it?
Various ham frequencies; rarely heard.
Easily confused with
- Radioteletype (RTTY), from the same family
- NAVTEX (maritime safety text), from the same family