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Computing and Comms in the (Sur)Real World. (What I did on my holidays!). Kevin Twidle. What and Where?. Inmarsat. Services Inmarsat A - Analogue Phone/Fax/Telex/HSD Inmarsat B - Digital Phone/Fax/Telex/Data/HSD Inmarsat M - Digital Phone/Fax/Data Inmarsat C - Digital Store & Forward.

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Computing and Comms in the (Sur)Real World


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computing and comms in the sur real world

Computing and Comms in the (Sur)Real World

(What I did on my holidays!)

Kevin Twidle

inmarsat
Inmarsat

Services

Inmarsat A - Analogue Phone/Fax/Telex/HSD

Inmarsat B - Digital Phone/Fax/Telex/Data/HSD

Inmarsat M - Digital Phone/Fax/Data

Inmarsat C - Digital Store & Forward

Acronyms

LES - Land Earth Station

MES - Mobile Earth Station

Connection is always:

LES <=> Satellite <=> MES

Costs ($/min)

Phone HSD/64000bps

A 7.64 14.63

B 4.25 18

M 4.45

C $0.23/256 bits $7.36/1K bits

Costs/System

A £20,000 + HSD

B £17,000 inc HSD

M £2,000 - £2,500

C £2000