Le bandplanning entre 24.890 et 24.990 MHz
24 MHz Band
DEFINITIONS
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.
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.
The term “automatically controlled data stations” includes Store and Forward stations.
Unmanned transmitting 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
| FREQUENCY (kHz) |
MAX BANDWIDTH (Hz) |
PREFERRED MODE AND USAGE |
| 24890 - 24915 | 200 | CW, 24906 kHz - QRP centre of activity |
| 24915 - 24925 | 500 | Narrow band modes - digimodes |
| 24925 - 24929 | 500 | Narrow band modes - digimodes, automatically controlled data stations (unattended) |
| 24929 - 24931 | IBP, exclusively for beacons | |
| 24931 - 24940 | 2700 | All modes - digimodes, automatically controlled data stations (unattended) |
| 24940 - 24990 | 2700 | All modes, 24960 kHz - Digital Voice Centre of Activity |
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 Voice mode: 1843, 3603 and 7053 kHz.
NOTES
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
