[amsat-bb] Re: sat-com (figured I better change the subject)

Roger Kolakowski Rogerkola at aol.com
Thu Mar 27 19:14:54 PDT 2014

My cellphone carrier can detect which direction my phone is pointed very 
accurately in a single location in my home. It shows on my internal 
mapping function and GPS is shut off. That to me means constant 
triangulation along with direction sensing within my android device...

If I'm in an accident that is good...if I do something illegal that is 

Not bad for finding north to orient satellite antennas though...

That to me is scarey in itself.


On 3/27/2014 4:17 PM, Howie DeFelice wrote:
> "I bet (a small bet anyway) my cell phone carrier doesn't save receive
> frequency data accurate enough to determine what direction I am driving
> though."
> You are probably right since the doppler shift is pretty small ( at least I hope it is :) ) on a
> cellphone. The satellite access is MA-TDMA so the burst timing and frequency offset need to be tracked.
> This is a useful performance metric when troubleshooting connectivity issues in a big network.
> - Howie AB2S
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“TV will never be a serious competitor for radio, because people must 
sit and keep their eyes glued on the screen; the average American family 
hasn’t time for it.”

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