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.
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.
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.
December 10, 2008
Great!Hope China will have the expanded 40m band segment soon!
December 10, 2008
@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
March 30, 2009
Good to know. But everyone is using USB
for digi-modes !
March 30, 2009
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.