3 centimetres: Difference between revisions

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(New page: 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. Ama...)
 
 
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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=3cm
|USG=10-10.5 GHz
|USE=10-10.5
|USA=10-10.5
|UST=10-10.5
|UK=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.
This band is also known as the 10 GHz band.  In the United States, it extends from 10.0 to 10.5 GHz.


== Equipment ==
== Equipment ==


Commercially-manufactured gear for 10 GHz is nearly nonexistent.  Amateur radio operators typically modify [[microwave]] gear intended for adjacent commercial bands.  Because of a the small wavelength, extremely high gain antennas become 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.
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 ==
== Modulation ==
Line 11: Line 22:
== Propagation ==
== Propagation ==


Although propagation on the band is largely [[line-of-sight]], significant [[troposphere ducting]] does occur.  Long-distance contacts have been made over hundreds of miles across Lake Superior.
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]].
==Australian bandplan==
Access : Advanced licensees only
[[Image:Vk4yeh_vk_3cm_bandplan.jpg]]
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}}

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

Vk4yeh vk 3cm bandplan.jpg

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
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