Orbcomm

Orbcomm

Frequencies	137 MHz,150 MHz
Frequency Range	137 MHz - 150 MHz
Mode	NFM
Modulation	SDPSK
ACF	1000 ms
Emission Designator	—
Bandwidth	15 kHz
Location	Worldwide
Short Description	Orbcomm satellites are used for monitoring and sending short text messages.
I/Q Raw Recording	—
Audio Sample

Orbcomm satellites are used for monitoring and sending short text messages. Uses SDPSK (Symmetric Differential Phase Shift Keying) for Subscribers, and OQPSK for ground station links.

Frequencies

• Subscriber Uplink: 148 MHzMegaHertz (MHz) 10^6 Hz - 150 MHzMegaHertz (MHz) 10^6 Hz
• Subscriber Downlink: 137 MHzMegaHertz (MHz) 10^6 Hz - 138 MHzMegaHertz (MHz) 10^6 Hz
• Satellite to Ground: 137.56 MHzMegaHertz (MHz) 10^6 Hz

Decoding Tutorials

• Deocoding Orbcomm With Multipsk 4.31 and an RTL-SDR

Decoding Software

Hobby Level Software

• Orbcomm Decoder
• OrbcommPlotter
• MultiPSK
• SatDump

Video Examples

• ORBCOMM Satellite Decode w/RTL-SDR, SDR#, Orbitron & OrbcommPlotter
• Radio Digital Modes & Methods: ORBCOMM (satellites)
• Orbcomm
• Recieving and Decoding Orbcomm

Additional Links

• Orbcomm Website
• WAVECOM Database: Orbcomm
• Orbcomm Technical Info
• Wikipedia Orbcomm Satellites
• Mike Kenny's Page
• Orbcomm Modulation

Additional Images

Closer view of Orbcomm 3 hours waterfall record Orbcomm STX signals shown in SatDump while waiting for Meteor

See Also

• OrbComm Mobile Telephony