One would expect the same transmission capability be used in an
Internet car radio as for a cell phone when used in data mode today.

The question becomes how much bandwidth is taken up in the "return
connection" when streaming.

The challenge to me seems to be how does one adapt the user interface
for an in-car experience; the same type of menu tree structure we see
in Internet radios today is probably not too different from what one
would expect to see in cars.

And, as Mr. David mused, what is the capacity of a typical cellular
network today for multiple simultaneous streaming connections?
Sprint, Verizon, and AT&T all offer USB cellular modems today for the
laptop-equipped crowd.

I don't believe the impediments are all that great, given the
technologies already in place for smartphones, wifi radios, and
wireless laptop connectivity.

I am not likely to be an early adopter, however, as I expect there
would be a premium for "first mover" status in this space.

When it comes to continuous RF exposure, I already use a wifi
connection on my laptop, with no apparent consequences.  Except for
that eyelid twitch I've developed <g>.

Richard Cuff musing in Allentown, PA

On Mon, May 10, 2010 at 5:34 PM, Joe Buch <[email protected]> wrote:
> I am wondering whether anyone has thought about the fact that steaming audio 
> using IP technology of any kind to a portable device will require a two way 
> link.  The link from the mobile unit will need a transmitter in contrast to a 
> DBS satellite radio that needs only a downlink.  Seems like a lot of power 
> will be consumed by a battery-powered device that will be continuously 
> radiating any time one is listening to the radio.  I think DBS makes a lot 
> more sense especially when one considers the possible radiation hazard 
> effects of continuous RF exposure.

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