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OK1KZL

3,5MHz

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
3600 3620	2700	All modes - digimodes, automatically controlled data station (*)
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.