Topic 'Re: Light dead satellite' in forum '' - dslreports.com

Re: Light dead satellite

Tue, 28 Feb 2012 22:44:52 EDT

ptbarnett posted :

I'd still like to know what they are gonna do with that big ass satellite up there.

SkyTerra 1 was designed for satellite data service to ground users. It has a huge reflector, which reduces antenna size and power consumption in mobile handsets.

It also has the ability to point up to 500 spot beams at North and South America, allowing reuse of frequency/bandwidth among users that are geographically separated.

Re: Light dead satellite

Tue, 28 Feb 2012 22:39:35 EDT

ptbarnett posted :

said by HIPAR:

There's no GPS compatibility problem with the satellite to earth signals but the uplink from ground terminals might still be a problem for nearby GPS receivers.

No, LightSquared's satellite is licensed for uplink in the 1626.5-1645.5 MHz and 1646.5-1660.5 MHz bands. GPS downlink frequencies are 1575.42 MHz (L1) and 1227.60 MHz (L2).

LightSquared is licensed for 1525-1544 MHz and 1545-1559 MHz for their _downlink_, but at that power level, it won't interfere with GPS.

Re: Light dead satellite

Tue, 28 Feb 2012 19:17:48 EDT

HIPAR posted : Lightsquared still provides satellite communications so I'd suppose their satellite still can be utilized in that role. Perhaps it might still be able to bring internet to remote places.

There's no GPS compatibility problem with the satellite to earth signals but the uplink from ground terminals might still be a problem for nearby GPS receivers.

The problem is a financial one .. can the revenue delivered from the satellite operations offset operating costs?

Light dead satellite

Tue, 28 Feb 2012 18:55:45 EDT

Pakapab posted : I'd still like to know what they are gonna do with that big ass satellite up there. Isn't it supposto be one of the biggest ones up there, ..... That is sure a big ass piece of expensive space s$&! Up there!!!
I'm surprised the dude didn't get fired out right, just goes to show these folkes hedged their bets, I think they might get something outa this after all. Does anyone know what the pay load on that bird is, I wounder what else it could be used for.