Listening to Globalstar LEO Satellites
- Thread starter Harlock
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Globalstar satellites.
I could only find that they are S-band and in LEO at 1414km. Other than that, I have only heard the phone calls made over them. May have to set some gear up and listen a bit.
Tx : 2200-2290 MHz
Rx : 2025-2110 MHz
Data is 9600 and mine only get used for voice these days. Using GSP1600 phones for work.
I could only find that they are S-band and in LEO at 1414km. Other than that, I have only heard the phone calls made over them. May have to set some gear up and listen a bit.
Tx : 2200-2290 MHz
Rx : 2025-2110 MHz
Data is 9600 and mine only get used for voice these days. Using GSP1600 phones for work.
I wasn't certain of which piece of equipment's perspective you were describing.
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EDIT: after proper reading my question is no longer valid
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Where did you find those frequencies?
I recall Globalstar being 1.6GHz for handset-to-satellite and 2.5GHz for satellite-to-handset.
Indusrustry Canada also has the same info and more exact ranges.
From:Industry Canada said:
https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf08507.html
Ofcom from UK also mentions Globalstar using 2483.5 to 2500 MHz spectrum.
From:
http://stakeholders.ofcom.org.uk/binaries/consultations/2ghzrules/statement/statement.pdf
My AOR AR8200 mk3 does do that band, but I'm unsure how succesfull reception will be, even with preamps and more directive antennas, as WiFi is really close and badly configured/hacked gear might interferere along with 2.6GHz band wifi that has been deployed in some countries.
Should have tried that with the modded Sirius XM antenna before parting it out for the S-band LNA inside.
K5MPH
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No links I'm afraid. My own mod. Basically removed the original filters and put jumpers in place, cut the line from RF output to the regulator and added DC input there. It seems to have a proper frontend to it.
The original filter is for the 12.5MHz wide Sirius XM band between 2332.5 and 2345.0 MHz.
The unfortunate thing is that RF input is in the middle of the board. It's a bit hard to work with. But after aquiring a mini-circuits LNA I'll likely put the XM LNA permanently to the feedpoint of something like the omni helix shown on the uhf-satcom s-band page.
UHF-Satcom.com - S-band reception
The original antenna is circularily polarized, some sort of pin fed slot thing.
The SWR was very usable up to 2.5GHz if I recall correctly. Most certainly it works on the 2.4GHz hamband.
The antenna I used looked like this:
New 21 ft XM Sirius Indoor Outdoor Antenna XM Onyx Delphi MyFi SKYFi Lynx Raody | eBay
In other news, I found out where the 2000MHz band fequencies ware found. Turns out TerreStar-1 uses those frequencies, if Industry Canada is to be trusted.
TerreStar Solutions Inc. and Gamma Acquisition Canada ULC are both licenced to use the frequency bands:
Uplink
2000 - 2010 MHz
Downlink
2190 - 2200 MHz
From:
https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf09815.html
https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf09820.html
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