CoheraRX ONLY

Signal guide

FSQ (Fast Simple QSO)

A text chat mode built for reliable short-range shortwave contacts, with automatic messaging features.

ModeFSQ
FamilyMultitone data
Audio exampleComing

What does it sound like?

Plate 18Multitone data

A soft, stepping sequence of tones.

Field marksTones stepping up and downShort bursts of chat

Who uses it?

Amateur radio operators, including emergency groups.

Where and when can I hear it?

Lower HF ham bands, for example 3.5 and 7 MHz.

Easily confused with