Digital Calling Frequencies

What is this?

Whilst learning new digital modes it turns out to be difficult to find actual frequencies where you might find these modes. This list is a start at documenting the calling frequencies for various digital modes.

Please feel free to let me know of any errors or omissions.

Last edited 29 August 2020

How to use this?

The table below shows the common calling frequency for each digital mode on that band. Note that there is no discussion about which side-band or what dial-frequency to use. Those concepts are useful in a world where equipment is single-purpose, but in our digital world, using software decoders, the only thing that actually matters is where the signal is on the band.

Region List

a: IARU Region 1

b: IARU Region 2

c: IARU Region 3

d: North America, Colombia, Chile, Indonesia, Malaysia, Thailand

e: New Zealand

f: Taiwan

g: Japan

h: South Africa, Europe, Russia

i: Argentina, Uruguay

j: Australia

k: Brazil

l: International Space Station (ISS), NO-44 (PCSAT)

m: Europe

n: Asia


There are several places where there are multiple frequencies shown. It's not (yet) clear what the canonical calling frequency is. Get in touch if you have updates or information about missing frequencies or modes. It may transpire that each region has their own calling frequency, in which case I'll update the table to reflect that.

The information presented here is not prescriptive. There is no guarantee that this information is free from error, and if you do find an error, please get in touch and let me know.

de Onno VK6FLAB,