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Peter Miles
Northam, Western Australia
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UFO-11
(USA-174)
UFO-11 Background and technical
overview.
HOME >
OPERATIONAL
> MODES
& FREQUENCIES > SATELLITES
- RADIO TARGETS >
UFO-11 is the final spacecraft of the U.S. Navy's UHF Follow-On (UFO) programme. It is also designated USA-174, 2003-057A, and NORAD 28117. It was launched on 18 December 2003 by an Atlas IIIB from Cape Canaveral SLC-36B. The launch mass was approximately 3,041 kg.
CelesTrak currently lists UFO-11 at roughly 35,800 km altitude with an inclination of about 9°.
The inclination is significant: UFO-11 is not presently a perfectly geostationary satellite. It moves north and south relative to the equator over the course of a day.
The UFO system has been superseded by MUOS. UFO-11 was intended partly as a transition/gap-filler spacecraft between the UFO constellation and MUOS. Current U.S. Space Force information describes the UFO system as having been fully replaced by MUOS.
Details
| Satellite: |
UFO-11 (USA-174) |
| Norad ID: |
22787 |
| Operator: |
US Navy |
| Status: |
Operational,
however superseded by MUOS. |
| Frequency Range: |
240.0 -
270.0 MHz VHF Down Link
20–45 GHz region EHF (details
unknown).
|
| Mode: |
FM |
| Altitude [km]: |
35,800km
Geosynchronous, near-equatorial at
Longitude 75.39 |
| Tracking: |
https://www.n2yo.com/?s=28117&live=1 |
The published
UFO-11
UHF transponder plan:
|
|
Bandwidth |
Status |
| 243.915
MHz |
30
kHz |
Confirmed |
| 243.935
MHz |
6
kHz |
Confirmed |
| 243.945
MHz |
6
kHz |
Confirmed |
| 243.955
MHz |
6
kHz |
Confirmed |
| 243.965
MHz |
6
kHz |
Confirmed |
| 243.975
MHz |
6
kHz |
Confirmed |
| 243.985
MHz |
6
kHz |
Confirmed |
| 244.225
MHz |
6
kHz |
Confirmed |
| 248.825
MHz |
30
kHz |
Confirmed |
| 248.845
MHz |
6
kHz |
Confirmed |
| 248.855
MHz |
6
kHz |
Confirmed |
| 248.865
MHz |
6
kHz |
Confirmed |
| 248.875
MHz |
6
kHz |
Confirmed |
| 248.885
MHz |
6
kHz |
Confirmed |
| 248.895
MHz |
6
kHz |
Confirmed |
| 248.905
MHz |
6
kHz |
Confirmed |
| 248.915
MHz |
6
kHz |
Confirmed |
| 248.925
MHz |
6
kHz |
Confirmed |
| 248.935
MHz |
6
kHz |
Confirmed |
| 248.945
MHz |
6
kHz |
Confirmed |
| 248.955
MHz |
6
kHz |
Confirmed |
| 248.965
MHz |
6
kHz |
Confirmed |
| 253.550
MHz |
30
kHz |
Russian
origin broadcast (Radio Sputnik) 18 Sept 2026 |
Reception Reports
|
| Screenshot 1
Russian radio pirates on US Navy satellite. Two-way NFM activity
on a 30kHz BW channel. |
References
TOP
OF PAGE
Page initiated 8 September, 2026
Page
last revised 19 September, 2026
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Space Weather
https://www.swpc.noaa.gov/
|
Michael Faraday
born 22 Sep 1791
Shaping the modern electrical age, Michael Faraday (1791–1867) was a pioneering British scientist who transformed our understanding of electricity and magnetism. His discoveries included electromagnetic induction, which laid the foundation for electric generators and transformers, as well as the principles behind the electric motor.
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Notice Board
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VK6YSF JS8Call and
Olivia 8/250 operations.
Current activity is generally
focused - though not restricted to - JS8Call operations on the 20,
30m, and 40m bands.
Olivia 8/250 is used occasionally on the 20m band.
Proposed
band and mode activity
is often communicated on HamSpots: https://hamspots.net/js8/
or my profile on
X: https://x.com/vk6ysf97230
.
Post
date: 27 August 2026
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Local
Repeaters
Repeaters Page Updated
- Expanded and refreshed information on VHF and UHF repeaters across Western Australia's Central Coast, Perth, the Avon Valley, and the Peel region. New AllStar Link information has also been added, including linked repeater details and
gateway information across the State.
Repeaters
details:
https://vk6ysf.com/local_repeaters.htm
AllStar Link notes:
https://vk6ysf.com/allstar_notes-20260703.htm
Post
date: 27 August 2026
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Western Australian SSTV net
Popular
Western Australian SSTV net for both digital and anolog SSTV.
Generally
found at 7214.0kHz LSB every afternoon from 08:00 UTC (4:00pm WST)
For more
details: https://www.wasstv.net/wasstv.net/index.html
Post
date: 8 December 2025
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VK6MJM LF (136kHz) and MF (474kHz) Beacon
VK6MJM is a LF/MF station
located in Manjimup, Western Australia.
Common Mode: FST4W 300 (Similar to
WSPR)
Note:
other modes and sub-modes may be used.
Station details were presented by
Peter Hall (VK6HP) at PerthTech 2024.Presentation PDF: Peter
Hall VK6HP at PerthTech
QRZ Page: VK6MJM
on QRZ.com
Post
date: 10 March 2025
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