UBAKoninklijke Unie van de Belgische Zendamateurs vzw

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Photo: Couloir

Het bandplan tussen 3.500 en 3.800 MHz

3.5 MHz Band

3500 - 3510 200 CW, priority for intercontinental operation
3510 - 3560 200 CW, contest preferred, 3555 kHz - QRS Centre of Activity
3560 - 3580 200 CW, 3560 kHz - QRP Centre of Activity
3580 - 3590 500 Narrow band modes - digimodes
3590 - 3600 500 Narrow band modes - digimodes, automatically controlled data stations (unattended)
3600 - 3620 2700 All modes - digimodes, automatically controlled data station (unattended), (*)
3600 - 3650 2700 All modes, 3630 kHz - Digital Voice Centre of Activity, SSB contest preferred, (*)
3650 - 3700 2700 All modes, 3690 kHz - SSB QRP Centre of Activity
3700 - 3800 2700 All modes, SSB contest preferred,
3735 kHz - Image Centre of Activity
3760 kHz - Region 1 Emergency Centre of Activity
3775 - 3800 2700 All modes, priority for intercontinental operation

Intercontinental operations should be given priority in the segments 3500-3510 kHz and 3775-3800 kHz.

Where no DX traffic is involved, the contest segments should not include 3500-3510 kHz or 3775-3800 kHz. Member societies will be permitted to set other (lower) limits for national contests (within these limits).

3510-3600 kHz may be used for unmanned ARDF beacons (CW ) (Davos 2005).

Member societies should approach their national telecommunication authorities and ask them not to allocate frequencies to other than amateur stations in the band segment that IARU has assigned to intercontinental long distance traffic.


All modes CW, SSB and those modes listed as Centres of Activity, plus AM (Consideration should be given to adjacent channel users).
Image modes Any analogue or digital image modes within the appropriate bandwidth, for example SSTV and FAX.

Narrow band modes All modes using up to 500 Hz bandwidth, including CW, RTTY, PSK etc.

Digimodes Any digital mode used within the appropriate bandwidth, for example RTTY, PSK, MT63 etc.

(*) Lowest dial setting for LSB Voice mode: 1843, 3603 and 7053 kHz.


Amplitude modulation (AM) may be used in the telephony sub-bands providing consideration is given to adjacent channel users. (NRRL Davos 05).

CW QSOs are accepted across all bands, except within beacon segments. (Recommendation DV05_C4_Rec_13).

Contest activity shall not take place on the 10, 18 and 24 MHz bands.

Non-contesting radio amateurs are recommended to use the contest-free HF bands (30, 17 and 12m) during the largest international contests. (DV05_C4_Rev_07).

The term “automatically controlled data stations” includes Store and Forward stations.

The frequencies in the bandplan are understood as “transmitted frequencies” (not those of the suppressed carrier!).

Unmanned transmitting stations:

IARU member societies are requested to limit this activity on the HF bands. It is recommended that any unmanned transmitting stations on HF shall only be activated under operator control except for beacons agreed with the IARU Region 1 beacon coordinator, or specially licensed experimental stations.

Sideband Usage Below 10MHz use lower sideband (LSB), above 10 MHz use upper sideband (USB).

IARU REGION 1 HF BAND PLAN – Effective 29th March 2009

HF Managers Handbook