Re: [amsat-bb] Re: Iridium frequencies

[Cliff Buttschardt <cbuttsch@xxxxxxxxxx>]

Many thanks for that!  I remember that brochure as well!  Cliff K7RR

"Walls, Jim R" wrote:
> 
> A couple days ago there was a questions and various answers about what
> frequencies the Iridium (RIP) phones and satellites used.  I have in my very
> hands, a brochure on that system that got handed to me in a "dog and pony"
> show that Motorola put on for my employer.  Here is what that brochure says:
> 
> Best viewed in monospaced font (such as courier)
> 
> Telephone and messaging service links   1616 - 1626.5 MHz (L band)
> Intersatellite links                    23.18 - 23.38 GHz (Ka band)
> Ground segment downlinks                19.4 - 19.6 GHz   (Ka band)
>                uplinks                  29.1 - 29.3 GHz   (Ka band)
> 
> Some other possibly useful information:
> 
> Satellites                     66 (plus 6 in-orbit spares)
> Orbital planes                 6
> Orbital height                 485 miles
> Inclination of orbital planes  86.4 degrees
> Orbital period                 100 minutes 28 seconds
> Satellite weight               1500 pounds
> Spot beams                     48 per satellite
>                                (30 miles in diameter per beam)
> Digital voice / data rates     2.4 Kb/s
> 
> 73
> ------------------------
> Jim Walls - K6CCC
> k6ccc@amsat.org
> Ofc:  626-302-8515   FAX:  626-302-9999
> Res:  626-914-4641
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