Difference between revisions of "Antarctica"
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Revision as of 15:21, 29 January 2016
Antarctica has many research stations and field stations used for scientific research. Each country has their own communications resources to maintain contact between their research stations, field stations, and home countries.
Stations and camps at higher latitudes cannot access communication satellites and will use HF radio communications to supplement polar orbiting satellites. VHF and UHF radios are used for communications closer to the stations.
McMurdo Station
LMR Trunking
McMurdo Station reportedly uses a LMR trunked radio system in the UHF spectrum for station operations. Frequencies and talkgroups are unknown at this time.
Vehicle and Handheld Radios
CH Net Name Transmit(MHz) Receive(MHz) 1 I-Net (T-Site) 143.0000 143.0000 2 Crash Net (T-Site) 139.6000 139.6000 3 NZ Portable 142.8000 138.8000 4 NZ Crater Hill 139.3000 143.8000 5 Public Works (T-Site) 139.0000 142.6000 6 Airfield Ops 139.2000 139.2000 7 Science Net 139.5000 139.5000 8 Field Party Ops 138.6000 143.2250 (Aurora repeater) 9 Fuels Net (T-Site) 143.6000 143.6000 10 Movement Control Center 139.8000 143.7250 (U.S. Crater Hill repeater) 11 Helo Ops 143.4000 143.4000 12 Penguin Ops/ANG 143.2000 143.2000
Field Radios
Very High Frequency (VHF)
CH Net Name Transmit(MHz) Receive(MHz) 1 I-Net (T-Site) 143.0000 143.0000 2 Crash Net (T-Site) 139.6000 139.6000 3 Science Net 139.5000 139.5000 4 Helo Ops 143.4000 143.4000 5 NZ Crater Hill 139.3000 143.8000 6 Helo Flight Following 138.5000 143.9750 7 Field Party Ops 138.6000 143.2250 (Taylor repeater) 8 Field Party Ops 138.6000 143.2250 (Wright repeater) 9 Field Party Ops 138.6000 143.2250 (Terror repeater) 10 Field Party Ops 138.6000 143.2250 (Aurora repeater) 11 Field Party Ops 138.6000 143.2250 (Brooke repeater) 12 Blank
High Frequency (HF)
4770 kHz - Ross Island and Dry Valley Field Parties 5100 kHz - Air-to-Ground 5400 kHz - Scott Base Field Parties 7995 kHz - Remote/South Pole 9032 kHz - Air-to-Ground 11553 kHz - Remote Field Parties
Palmer Station
Field Radios
High Frequency (HF)
4125 kHz - Secondary USAP Field Parties 11553 kHz - Primary USAP Field Parties
South Pole Station
LMR Trunking
South Pole Station reportedly uses a LMR trunked radio system in the UHF spectrum for station operations. Frequencies and talkgroups are unknown at this time.
Point-to-point HF
South Pole Station maintains communications with McMurdo Station, and other locations, using the South Pole HF (SPHF) system.
(This information is from 2007-02-15 and may be outdated.)
Group 1: McMurdo Directional
Using a directional TCI-548 log periodic antenna, three simultaneous frequencies may be received and a single frequency may be selected for transmitting.
Group 2: Omnidirectional
Provides backup to Group 1 communications and provides omni-directional HF access to other resources.
Group 3: Switched Coverage
Provides three receivers, providing coverage to Palmer, West Antarctica, and short range (using omni-directional NVIS)
Other HF
US-5 circuit for long-range air-to-ground communications for official aircraft traffic or emergency traffic.
US-17 circuit used for general administrative information passed between outlying stations and McMurdo Station. Used for daily field camp check-ins.
References
Citations
Field Manual for the U.S. Antarctic Program, Chapter 9, Field Radios