Re: [amsat-bb] Digital Bird

[Greg Preston <preston@xxxxxxxxx>]

Ken,

And all interested on a little primer on TDMA.  Please visit
http:\\home.att.net/~w4eus/
On that page you will find a link that takes a preliminary look at how ham
radio could take its first steps into digital radio.  I tried the link tonight
from here in Sweden but had no luck bringing it up.  I know it's still a
functioning webpage though--

Greg Preston
KF4BWQ

Ken Freedman wrote:

> Hi Gang,
>
>       I am absolutely riveted by what is slowly emerging here in the
> discussion being lead by Phil Karn, but  I am afraid I find myself getting
> lost, as I have never studied any of the XXMA technologies.  I am probably
> not the only dummy on the list who is struggling to stay with this
> discussion, so I wonder if Phil and company would be kind enough to add a
> little flesh to the bones of theory.  Perhaps a scenario like this:
>
> AO-Digital is at 15 degrees in my sky and rising, and an LED on my rig says
> comm is now possible through the bird.  How does it know that? Do I now
> pick a freq, or time slot, to call CQ on?  What interaction would there be
> between AO-Digital and my rig, and how would someone looking for a CQ to
> answer go about it, and what would happen between his rig and AO-Digital?
>
> Anyone care to take a shot at this in broad terms??
>
> 73, Ken
>
>
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