[MLB-WIRELESS] [TECH] Dipole antennas, and melbwireless str ucture

[Tony Langdon]

> > LOL. :-)  Well the Linux box doesn't have a screen :)
> 
> And you don't have a car, using that logic :)

Nope, just I use trams a lot - got a lot to do with the cost of parking in
the city, plus a few warm fuzzies from being "greener" ;)

> > > > And these routes can be statically specified.
> > >
> > > well, semi-statically...  static stuff sucks ;)
> >
> > Yeah, I'm trying to minimise traffic here, and if the 
> network can safely
> > assume a particular route is up, all the better.
> > Sure, though making a black-hole by having a flakey shortcut 
> sounds like a
> really great way of making a network that just flakes all the time.

I'm looking at a realistic case where someone can provide a shortcut, but it
may only be available for x hours a day (e.g. evenings).  Can anyone say
"shared rent"?  "Arguments over power bills"? :-)
> 
> 
> > > The long/lat stuff is useful in preventing the *whole*
> > > network from being
> > > discovered by broadcast...
> >
> > Yes, it will be more useful for knowing where to route 
> traffic destined
> for
> > distant nodes.  Local nodes have to be discovered.
> 
> It's a broadcast zone.  any transmission implicitly implies 
> this discovery.
> The discovery can be incidental, rather than explicit.

Agreed, the discovery of something "missing" is always going to be slower,
of course.  Why didn't the other end respond?  Because it was turned off?
Because there was a collision?  Because it crashed?  Because it was at 100%
CPU and couldn't respond at the time?   In the meantime packets are getting
delayed until it is known (or assumed by the expiration of a timer after a
few retries) that the node has indeed died.  If the node can tell the world
(as in the case of a normal shutdown), all the better. :-)

> Yup, I was just pointing out it's unlikely to be trivial, and 
> thus, less
> likely to get done.  Something worth considering in look at 
> how this will
> ultimately scale.

I feel Win32 is ultimately necessary.  Not everyone is going to run *NIX on
their node for whatever reason (ok, you may not like that, but some people
have very valid reasons to use Windows), for this to become acceptable on a
broad scale, unless it becomes an appliance thing (unpack node, chuck on
roof with omni and turn on sort of thing)...
> >
> > What are you in this for?  Greed doesn't catch my eye. ;-)
> 
> I've dreamt of a UPN for a very long time.  Thinking about 
> this stuff is
> fun, making something work is a major buzz.  I also enjoy 
> having my ego
> stroked by people telling me how much of a gun I am.
> Being rich affords one a lot of scope to re-implement the 
> idea a lot better,
> and faster.  Cutting through red tape is much easier with 
> money.  Money has
> it's uses, but it's not something I'm greedy for.  (if I 
> were, why the hell
> would I be typing such long emails? ;)

Oh,I like the UPN idea, don't get me wrong on that score. :)

> 
> > <loads up a few nukes...> ;)
> 
> heh, period of very hot nuclear fire, period of very cold 
> nuclear winter.
> 
> I really should get some sleep...  And not type email when 
> I'm drunk...
> That rich comment was very inflamatory...  i intended it with 
> so much toung
> in cheek... Ahh well...  Can't be perfect at everything, all the time.

Hehe, the problem with me is I've worked hard to get the priviledge of
spectrum access that only a minority enjoy (but anyone can do, with some
effort), and nowadays, commercial interests are convincing governments with
lots of $$$ to take that bandwidth away for their purposes.  Sure, public
networks will cause some interference, but as long as they stay non profit,
we will all (mostly) get along.  As soon as it becomes big bucks, that could
change and we might all be kissing 2.4 GHz goodbye, unless we have $$$ to
subscribe to ABC Wireless Internet, or live with flea  power, no external
antennas and whatever crap the big boys spew into the band. :-/

The one saving grace is it's an ISM band, so interference from industrial
(good old Microwave ovens!), scientific and medical equipment can be
expected (and these applications are protected, I think as well), but that
may not perturb big corporations with deep pockets and healthy research
budgets...

Food for thought - the ham band in this part of the spectrum used to be 150
MHz wide... Now 98 MHz of that has been turned over to MDS TV broadcasting
(2302 - 2400 MHz).

UPNs, yes, but let's keep this a community project.

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