The International Amateur Radio Union (IARU) is a federation of national associations of certified radio amateurs, representing over 150 countries and separate territories around the world.

The three IARU Regions are organised to broadly mirror the structure of the International Telecommunications Union (ITU) and its related regional telecommunications organisations. The Regions comprise:
- IARU Region 1: Europe, Africa, the Middle East and Northern Asia
- IARU Region 2: The Americas
- IARU Region 3: Asia-Pacific

The IARU represents the interests of the Amateur Radio Service worldwide to relevant international organisations, promoting the interests of amateur radio and seeking to protect and enhance its spectrum privileges.

5 MHz activity in SV

Following the last information on 5MHz activity from Greece we would like to spread the word. At first the beacon is ready and it has been tested for several days now. Frequency is 5398.5 MHz (CW) to avoid interference with normal use of the channel mostly in the UK. It runs 30W into a non resonant antenna for the moment.

You may look for it mostly between 1900-0600 z. It may be off for some days due to other HF activities at the test site, so try to listen regularly. The beacon is expected to run flawlessly from the beginning of 2012.  The beacon sends the following sequence at T+15 seconds (T= minute 00, 15, 30, 45 every hour)

5 seconds tone on 10% of RF power ~3W

3 seconds tone on 50% of RF power ~15W


2 seconds pause

5 seconds tone on 100% of RF power ~30W

2 seconds pause

Psk31 message : "___De SZ1SV SZ1SV beacon reports This email address is being protected from spambots. You need JavaScript enabled to view it."

Cw message : "de SZ1SV SZ1SV SK"

The beacon can be monitored with software from Peter Martinez G3PLX. Since the software monitors 3 time slots only the first will be used (red graph)

We will accept skeds on any mode but we prefer cw. Send mail for skeds and reports or more information to This email address is being protected from spambots. You need JavaScript enabled to view it.

Remember that this is the only licensed station (SZ1SV). The band is not open for other SV stations