3 centimetres: Difference between revisions
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Other VHF/UHF/Microwave wiki pages : [[13 centimetres]], [[9 centimetres]], [[6 centimetres]], [[1.25 centimetres]] and [[Bands above 24GHz]]. | |||
{{Band | {{Band | ||
|band=3cm | |band=3cm | ||
|USG= | |USG=10-10.5 GHz | ||
|USE= | |USE=10-10.5 | ||
|USA= | |USA=10-10.5 | ||
|UST= | |UST=10-10.5 | ||
|UK=10-10.5 | |||
}} | }} | ||
| Line 21: | Line 22: | ||
== Propagation == | == Propagation == | ||
Although propagation on the band is largely [[line-of-sight]], significant [[ | Although propagation on the band is largely [[line-of-sight]], significant [[tropospheric ducting]] does occur. Long-distance contacts have been made over hundreds of kilometres across Lake Superior. | ||
Most 10 GHz [[QSO|QSOs]] are made through prearranged schedules, on nets, or during contests. Because of the high-gain antennas used, contacts are typically point-to-point, rather than initiated through calling [[CQ]]. | Most 10 GHz [[QSO|QSOs]] are made through prearranged schedules, on nets, or during contests. Because of the high-gain antennas used, contacts are typically point-to-point, rather than initiated through calling [[CQ]]. | ||
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10450.000 - 10500.000 AMATEUR SATELLITES | 10450.000 - 10500.000 AMATEUR SATELLITES | ||
{{bands}} | |||
Latest revision as of 19:27, 8 April 2009
Other VHF/UHF/Microwave wiki pages : 13 centimetres, 9 centimetres, 6 centimetres, 1.25 centimetres and Bands above 24GHz.
| Band: 3cm | |
| Bands | |
| 160m 80m 60m 40m 30m 20m 17m 15m 12m 10m 6m 4m 2m 1.25m 70cm 33cm 23cm 3cm | |
| Band Privileges | |
| US Extra | 10-10.5 |
| US Advanced | 10-10.5 |
| US General | 10-10.5 GHz |
| US Technician | 10-10.5 |
| UK (all) | 10-10.5 |
This band is also known as the 10 GHz band. In the United States, it extends from 10.0 to 10.5 GHz.
Equipment
Commercially-manufactured gear for 10 GHz is nearly nonexistent. Amateur radio operators typically modify microwave gear intended for adjacent commercial bands. Because of the small wavelength, extremely high gain antennas are practical. Typical 10 GHz antennas are dishes with gain of 30 to 40 dB, which means that very little power is required for high-quality voice communication.
Modulation
Although FM used to be widely used on this band, it has been largely supplanted by SSB.
Propagation
Although propagation on the band is largely line-of-sight, significant tropospheric ducting does occur. Long-distance contacts have been made over hundreds of kilometres across Lake Superior.
Most 10 GHz QSOs are made through prearranged schedules, on nets, or during contests. Because of the high-gain antennas used, contacts are typically point-to-point, rather than initiated through calling CQ.
Australian bandplan
Access : Advanced licensees only
Additional notes
10000.000 - 10160.000 ALL MODES
10160.000 - 10360.000 WIDEBAND MODES
10160.000 - 10180.000 Channel 1: Data
10180.000 - 10200.000 Channel 2: Voice
10200.000 - 10220.000 Channel 3: ATV
10220.000 - 10240.000 Channel 4: Data
10240.000 - 10260.000 Channel 5: Voice
10260.000 - 10280.000 Channel 6: ATV
10280.000 - 10300.000 Channel 7: Data
10300.000 - 10320.000 Channel 8: Voice
10320.000 - 10340.000 Channel 9: ATV
10340.000 - 10360.000 Channel 10: Simplex, any mode
10360.000 - 10368.000 ALL MODES
10368.000 - 10370.000 NARROW BAND MODES
10368.000 - 10368.100 EME only
10368.100 - 10368.400 CW / SSB
10368.100 Calling frequency: national primary
10368.200 Calling frequency: national secondary
10368.220 - 10368.240 Digital DX modes
10368.400 - 10368.600 Beacons
10368.600 - 10370.000 General / Experimental
10370.000 - 10371.000 FM SIMPLEX (VOICE)
10371.000 - 10380.000 FM SIMPLEX (DATA)
10380.000 - 10440.000 WIDEBAND MODES
10380.000 - 10400.000 Channel 11: Data
10400.000 - 10420.000 Channel 12: Voice
10420.000 - 10440.000 Channel 13: ATV
10440.000 - 10447.000 FM SIMPLEX (DATA)
10447.000 - 10448.000 FM SIMPLEX (VOICE)
10448.000 - 10450.000 NARROW BAND MODES
10450.000 - 10500.000 AMATEUR SATELLITES
| Bands | |
| HF and MF | 160 metres * 80 metres* 60 metres * 40 metres * 30 metres * 20 metres * 17 metres * 15 metres * 12 metres * 10 metres |
| VHF | 6 metres * 4 metres * 2 metres * 1.25 metres |
| UHF | 70 centimetres * 33 centimetres * 23 centimetres * 13 centimetres |
| Microwave | 9 centimetres * 6 centimetres * 3 centimetres * 1.25 centimetres * Bands above 24GHz |
| See also | US bandplan |