Charlie Young wrote in a message to Bruce Legrande:
>    I am aware that there are data signals currently being
> sent down containing internet e-mail and other such, but
> replies are STILL limited to terra-link pathways. AFAIK
CY> As far as the general public is concerned, yes.  However,
CY> there are some companies launching low earth orbit (LEO)
CY> sats to provide 2 way data and voice comms using very
CY> small antennas -- suitable for mobile and hand-held
CY> use.
Here again..  I'm talking about using a resource that
is ALREADY in place.  Not having to pay $$$ to have new
sats put in place.  And I'm not talking about something
with such a high sensitivity that it it capable of hearing
a low power portable signal source.  What I'm proposing
would DEFFINATELY have to be done from a fixed location
with an array with much more gain that a "handheld".
>    If the normal mesh dishes (7-12') could also be used
> for transmitting, the cost for that part would be small.
> Even if it required a solid dish with a deeper parabola,
> it would surely be possible for the homebrew enthusiast
> to construct a functional array with available materials
> and techniques.
CY> You would not be able to build your own since it would
CY> not be Amateur Radio.  Any commercial outfit would have
CY> to provide all the equipment in order to be legal -- you
CY> cannot (legally) build your own cell phone for example :)
Then perhaps certain sections of the C-Band needs to be
deregulated a bit to allow for this.  As you say, the
businesses and the govt are pushing more for the Ku, and
it MIGHT be possible to have a small space of the audio
carrier spectrum to the sats designated as a hobby area,
where homebrew equipment (that met certain relaxed tol-
erances) could be operated.
>    And the wattage output of most of the "C" xpndrs being
> around 20-30 watts, it doesn't seem like it would be too
> hard to develope at least that much (if not a bit more)
> for purposes of uplink.
CY> Video uplinks generate about 10 times that amount, but narrow band
CY> Ku systems require much less.
And again...  I'm not talking about the "average" user
having the ability to send video.  What I described was
the "average" user being able to access the AUDIO freqs
in order to exchange DATA traffic.
If I understand you correctly, what you're saying is that
it's the VIDEO carrier that takes the "10 times" power to
reach the sat, right ?  What about JUST audio signals ?!
How much ERP would be needed to get THAT uplinked ?
> I'd like to discuss the feasability of this idea.
> And if there is already a system like this in operation
> (I've heard of Digital Amateur Packet Sat Gateways),
> I'd like to know more about it.  IE; what would I need
> in the way of hardware to obtain access ?
CY> Why not ask some company to include some Amateur Radio
CY> transponders on their geo-synchronous satellite?
CY> If the price was right, they might do it :)
This is a GREAT idea, and one that I've considered.
AAMOF, Keith Lamonica just mentioned something about
a group of TVRO enthusiasts getting together and buying
a transponder on his show tonight (G4/14), and I'm
going to bounce my ideas off him as well...
Even if the cost is several thousand $/mo, with several
thousand amateurs and TVRO enthusiasts out there, it
would only ammount to a couple bucks per person / per mo.
Nad like I mentioned...  I would think it MORE than
reasonable to budget a small ammount a month to a
project like this - if it meant I would have the
ability to have two-way data communication via geo-sat.
Comments ???
Sincerely,
           Bruce - kb6lwn - ck1@pacbell.net
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