Re: Recommendations for a satellite modem

Jul 29, 2003 2 Replies
M


Hi there,


>
> We make PLC based systems with telemetry (ethernet, GSM modem or PSTN
> modem) fitted so that we or the customer can support them remotely.
> Our requirements are:
>
> 1. Connection via RS232 serial port
> 2. Control via AT commands (not essential but it would help)
> 3. Suitable for use in Canada. Ideally also suitable for use in the UK
> (for our setup and testing) and Mexico (for another potential customer)

On

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you will found a GSM modem. With beginning of Sep. 2003 you can get it as a triband GSM 900 / 1800 /1900.


Best regards Meff

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C

Chris, you didn't say what sort of data throughput you were looking for - I'm assuming you can get away with 2400baud..

If there really is no terrestrial way of doing it (microwave, short-wave radio, etc.), you would probably be looking at an Inmarsat-M service (you will have A, B C, M & M4 in Canada). A Google search on "Inmarsat-M" yields:

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I have used 'sat-M before, but not on land and the $$ required was huge!

Cameron:-)

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C

Unfortunately 9600baud+ (ever the optimist :-))

A Google search on "Inmarsat-M"

Thanks Cameron, I'll have a look at the links. Unfortunately we're about a 6 hour flight from the customer so a site visit is tricky. The customer has specified he needs satellite because of the (very) remote location. They reckon they have a satellite modem on another system that costs 25 dollars a month (?), so I'm trying to find out about that system. Unfortunately its vacation time so i'm having difficulties getting answers

Thanks,

Chris.

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