John Smith wrote:

...
Personally, I would NEVER suggest purchasing an AP/card with less than
350mw capability. And, only then if you get one-hell-of-a-buy.

Warm regards,
JS


Sorry to have been so verbal. I could have summed that up rather
quickly, nicely and sweetly, I choose not to ...

You see millions of cell phones; You see a LOT of problems?

Regards,
JS

On Mon, 08 Dec 2008 11:35:12 -0800, John Smith
wrote:

You see millions of cell phones; You see a LOT of problems?

Oh yes, I certainly do see problems. They're well hidden and
mitigated in various ways. For example, if the error rate climbs, the
adaptive tx power control cranks up the power on both the handset and
the cell site end. If it persists, you get disconnected. Rather than
have the user sound like they're talking while gargling ball bearings,
the cell site just pulls the plug. Incidentally, the tx power control
algorithm is rather messy as it has to handle different data types, at
different rates, all while doing its best not to drain the handset
battery. One the cell site end, it's no better as the power
consumption of a typical cell site is non-trivial.

Problems? Well:
http://www.roughlydrafted.com/2008/08/28/the-inside-deets-on-iphone-202-and-dropped-calls/
Hmmm... power control algorithm again.

Todays typical cell phones run about 150mw max average power output
(according to the FCC ID data). Some are even less. None are
anywhere near the 600mw legal maximum. If they could, you would have
a dead battery within about an hour. (Do the math).

Back to wi-fi and your setup. Sure, you'll have fairly good
preformance with a high power setup. 14 times the usual power is
bound to do some good. However, I suspect your neighbors are not so
thrilled and will probably also be shopping for higher power hardware.
It will be like an arms race, where the biggest bomb allegedly wins.
Dealing with mutual interference is no fun, especially with only 3
available non-overlapping channels.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Jeff Liebermann wrote:
On Mon, 08 Dec 2008 11:35:12 -0800, John Smith
wrote:

You see millions of cell phones; You see a LOT of problems?

Oh yes, I certainly do see problems. They're well hidden and
mitigated in various ways. For example, if the error rate climbs, the
adaptive tx power control cranks up the power on both the handset and
the cell site end. If it persists, you get disconnected. Rather than
have the user sound like they're talking while gargling ball bearings,
the cell site just pulls the plug. Incidentally, the tx power control
algorithm is rather messy as it has to handle different data types, at
different rates, all while doing its best not to drain the handset
battery. One the cell site end, it's no better as the power
consumption of a typical cell site is non-trivial.


Yes, hackers (well, you may prefer programmers/software-engineers?) do a
very nice job, they have done it with wifi too, still doing it actually,
personally--I suspect viagra! LOL

Problems? Well:
http://www.roughlydrafted.com/2008/08/28/the-inside-deets-on-iphone-202-and-dropped-calls/
Hmmm... power control algorithm again.

Todays typical cell phones run about 150mw max average power output
(according to the FCC ID data). Some are even less. None are
anywhere near the 600mw legal maximum. If they could, you would have
a dead battery within about an hour. (Do the math).


Yeah, personally, I could handle a cell phone 2x to 3x the size, most of
it battery ... my cellphone is 300mw out (max, but variable, as needed,
as you state), I read those specs before purchasing, also. 4 hours max
talk time (like if your sitting right under the tower?) is no problem
for me, mine averages 2-3hrs, but I have a pocket charger, takes two AA
high output recharge-ables (you can chuck alkaline in if needed) and is
quick, chat while charging, so never without power (did I mention 2 week
standby time?), now ask the wife, you get another answer ...

Back to wi-fi and your setup. Sure, you'll have fairly good
preformance with a high power setup. 14 times the usual power is
bound to do some good. However, I suspect your neighbors are not so
thrilled and will probably also be shopping for higher power hardware.
It will be like an arms race, where the biggest bomb allegedly wins.
Dealing with mutual interference is no fun, especially with only 3
available non-overlapping channels.


My son and I, once or twice a year, attend a game fest. There is more
high power equip set up than you can shake a whatever at ... doom,
heretic, diablo, etc. (you can tell, I like the old ones :-( ) nets all
off separate APs, the wifi cards are simply uncountable--if you think
thats nuts, attend a gaming convention in Nevada, frankly, I would have
to state, from REAL hands-on, the problems you state just don't exist to
a REAL degree ... if they/it did, they would be fixing that now (more
chans, tighter packet packing/encryption, more-adaptable, spread
spectrum, etc. Remember, networking has NOT EVEN reached its' infancy,
yet!) Without a doubt, there are conflicts and lost packets--you just
never notice them--now, if everyone there started, separately, watching
a HD movie, most-likely no joy ... :-(

Besides, my neighbors are idiots (technical idiots, I admit, I like a
couple of 'em), I doubt they do anything but email/surf and download an
illegal movie/song now-and-then -- well, I suspect them of porn--but I
am like that yanno? Suspicious.

But hey, if everyone agreed with me, I would NOT be here, and this would
NOT be fun--did I mention it would be boring? wink

Warm regards,
JS