Re: RE: 300mw?

On Apr 13, 2004, at 11:59 AM, David Young wrote:

> On Tue, Apr 13, 2004 at 11:32:26AM -0700, Joel Jaeggli wrote:
>> I thought the goal was to abuse the commans until is became unusable.
>
> It sure seems so!  It's really too bad, the money and mind-share that
> these high-power Prism cards get, when the 802.11 ASICs by Atheros,
> Realtek, and ADMtek are lots more versatile, and they provide *transmit
> power control* in one way or another.

The Prism cards will continue to become less of the equation with time. 
  The Prism 2/2.5 chipset just costs too much to make it into any real 
'volume' product, and there are other 'high power' solutions (on yes, 
Atheros and Realtek) chipsets, that, as David says, provide tx pwr ctl, 
as well as more interesting architectures for software tricks, 
equivalent or better receivers, etc.

I'm not sure what the value of a 300 or 400mW AP is.  The client almost 
certainly doesn't have that kind of tx power, so your link won't be 
reciprocal.  Perhaps the application is a 25dBm (300mW) bridge but this 
would be limited to about 18dBi of antenna gain, and an additional dBi 
of gain.   Since you can run an additional 6dBi of gain (on each end) 
with the lower power (23dBm) card, I would think that most people would 
employ the antenna, both for reasons of cost, as well as better 
rejection of off-axis interferers.

obligatory disclosure:  I sell a lot of high-power cards (as well as 
the other things mentioned here).   Demarc is a competitor.

Jim

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