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New bandplan for 40M from March 29 2009


Posted: December 10th, 2008 under Hamradio.

At the IARU Region 1 conference in Croatia they agreed on a new 40M bandplan. Several countries, including Norway, have had the opportunity to use a bandsegment from 7100kHz to 7200kHz on a secundary basis with 100W output power. From March 29 2009, the whole segment will be assigned on a primary basis with 1000W output power.

Here is the new bandplan:

IARU REGION 1 HF BAND PLAN – Effective March 29 2009

 Frequency (kHz)  Max bandwidth (Hz)  Preferred mode and usage
 7000 – 7025     200   CW, contest preferred
 7025 – 7040  200   CW, QRP Centre of Activity 7030 kHz
 7040 – 7047  500   Narrow band modes – digimodes
 7047 – 7050   500   Narrow band modes – digimodes, automatically controlled data stations (unattended)
 7050 – 7053   2700   All modes – digimodes, automatically controlled data stations (unattended) *
 7053 – 7060   2700   All modes – digimodes  
 7060 – 7100    2700   All modes, digital voice 7070, SSB QRP Centre of Activity 7090 kHz, SSB contest preferred
 7100 – 7130   2700   All modes, Region 1 Emergency Centre of Activity 7110 kHz
 7130 – 7200   2700   All modes, SSB contest preferred, Image Centre of Activity 7165 kHz
 7175 – 7200   2700   All modes, priority for intercontinental operation.

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

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

DEFINITIONS
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: 1843, 3603 and 7053 kHz.
 
Notes

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.

Transmitting frequencies: The announced 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.

Source: NRRL



Comments: 4

Comments

BA4TB

December 10, 2008
8:59

/

Great!Hope China will have the expanded 40m band segment soon!
73,s

la8aja

December 10, 2008
9:14

/

@BA4TB: Thanks for stopping by.
Yes, let’s hope the band will be expanded for everyone. The band in it’s current form is way too small. It is very noticable in the major contests.

73 de LA8AJA

Peter Martinsen

March 30, 2009
4:42

/

Good to know. But everyone is using USB
for digi-modes !

73

la8aja

March 30, 2009
7:52

/

Hi Peter.

40M has always been a problemband when it comes to big ssb contests. Hopefully this will change when more and more countries will get an expanded band.