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Peter Miles
Northam, Western Australia
QRZ Page: VK6YSF
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WEATHER
SATELLITES - GEOSTATIONARY - L BAND
Geostationary weather satellites that transmit in
the 1.7 GHz (L Band) Under
development
HOME >
OPERATIONAL
> MODES
& FREQUENCIES >
Table
of geostationary weather satellites that transmit in the 1.7 GHz
band.
|
Satellite
|
Azimuth
(° True)
|
Elevation
(°)
|
L-band
Frequency Range (MHz)
|
Typical
Data Service
|
Polarization
(Receive)
|
Notes
/ Remarks
|
|
Geo-KOMPSAT-2A
(GK-2A)
Korea
|
21.3°
|
51.1°
|
1692.14
(LRIT)
1695.40 (HRIT)
|
HRIT
/ LRIT
|
RHCP
|
Stable,
continuous HRIT broadcast; very popular in Asia-Pacific.
|
|
Himawari-8
/ 9
Japan
|
40.4°
|
44.9°
|
1691–1694
|
HRIT
/ LRIT
|
RHCP
|
HimawariCast
L-band service (via JMA); identical polarization to GK-2A.
|
|
FengYun-4A
(FY-4A)
China
|
338.5°
|
51.0°
|
1687
(LRIT)
1695 (HRIT)
|
HRIT
/ LRIT
|
RHCP
|
Strong
continuous transmission; good coverage for WA.
|
|
FengYun-4B
(FY-4B)
China
|
312.1°
|
40.8°
|
1687–1695
|
HRIT
/ LRIT
|
RHCP
|
Operational
sibling to FY-4A; similar signal parameters.
|
|
Elektro-L3
Russia
|
65.6°
|
26.0°
|
1691–1693
|
HRIT
/ LRIT
|
RHCP
|
Lower
elevation from WA but still above horizon; transmissions may
be intermittent.
|
Table
1 Details of various geostationary weather satellites that transmit in the
1.7 GHz band as viewed from Northam West Australia.
Fig
1 Sky view of various geostationary weather satellites that transmit in the
1.7 GHz band as viewed from Northam West Australia.
Hardware
setup
|
Item |
Typical
Spec / Recommendation |
|
Antenna
|
1–1.2
m parabolic dish or 3–5 turn RHCP helical tuned for 1.69 GHz
|
|
Feed
Polarization
|
Right-Hand
Circular (RHCP)
|
|
LNA
|
≤
1 dB noise figure, ≥ 20 dB gain, placed near feed
|
|
SDR
|
RTL-SDR
V3, Airspy Mini, SDRplay, or similar (TCXO/GPSDO preferred)
|
|
Coax
|
Low-loss
(LMR-240/400 or RG-6); keep length ≤ 10–15 m
|
|
Power
|
Bias-T
to power the LNA (5–12 V depending on model)
|
DISH
ANTENNA - 1.7GHz
0.9m
Satellite
Dish Antenna - 1.7 Ghz.
Notes
for SatDump Users
SatDump
general parameters
|
Setting |
Recommended
Value / Notes |
|
Input
source |
Your
SDR (select correct driver) |
|
Centre
Frequency |
See
per-satellite table below |
|
Sample
Rate |
2.4
MS/s – 6 MS/s (depends on SDR and PC speed) |
|
Gain |
Adjust
so the LRIT/HRIT carrier peak is 30–40 dB above noise floor |
|
Demodulator |
BPSK
(CCSDS BPSK or OQPSK depending on satellite preset) |
|
Pipeline |
Select
Satellite Service: LRIT or HRIT |
|
Output
Folder |
e.g.,
SatDump/output/ |
|
Clock
correction |
Enable
Frequency correction if your SDR has slight drift |
|
Recording |
Optional:
save IQ stream for later decoding (tick Record IQ) |
Pass
Prediction Tools
To
predict when the satellite will be overhead:
TOP
OF PAGE
Page initiated 18
October,
2025
Page
last revised 18 October,
2025
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Space Weather
https://www.swpc.noaa.gov/
|
Nikola Tesla, born on 10 July 1856, was one of
history's most influential inventors.
|
Notice Board
|
VK6YSF JS8Call and
Olivia 8/250 operations.
Current activity is generally
focused - though not restricted to - JS8Call operations on the 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: 5 July 2026
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Local
Repeaters
The Local Repeaters page has been updated with expanded and refreshed information on VHF and UHF repeaters across Western Australia's Central Coast, Perth, the Avon Valley, and the Peel region.
See: https://vk6ysf.com/local_repeaters.htm
Post
date: 5 July 2026
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MARMOTSat
An exciting upcoming amateur radio CubeSat
Proposed
launch date: 7 July 2026
Expected payload includes:
145.875 MHz – AX.25 packet digipeater
436.125 MHz – Telemetry & command (digital)
29.410 MHz – CW telemetry beacon, DVB-S2 experiments.
https://marmotsat.ca
https://www.propagationlab.ca/satellite/
Post
date: 5 July 2026
|
|
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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