[MLB-WIRELESS] Microtik 200mW Wireless cards for $125USD

[Andrew Dean]

> This may not be quite true, if the card's RX is poor then the
> additional TX isn't of much use, as it will send much further
> (reducing reuse) while being able to "hear" much shorter distances... 

Sure, but if you use 2 of these cards @ 200mW they can "PUSH" the signal further hence they don't need as much receive sens ? which would make them even better than say 2 cisco cards :)

> Using higher gain antenna with lower output card on the client side of
> things is a much more efficient way to use the spectrum... For example
> of this see Tony Langdon's post on the 20th of June, about the
> benefits in using less output with higher gain antenna... higher
> output could effectively limit your useable signal...

Fair enough i understand how a antenna with gain works both ways, helps pick up a weaker signal etc... but hadn't heard about the higher output could  limit the useable signal....

> Even a 15dBm card with an 8dBi omni is capable of usable signal at
> 20km or further, by using a high gain antenna at the client end, such
> as a 24dBi galaxy... even just using a cantenna the range is capable
> of being 10km or further... and 2 24dBi dishes have the ability to do
> 100km on a 15dBm cards...


wow, hadn't heard anyone peel figures like this before, enterasys card, 8dBi omni with a cantenna reaching 10k's, nice, good to know, taa


----- Original Message ----- 
From: "evilbunny" <evilbunny at sydneywireless.com>
To: <melbwireless at wireless.org.au>
Sent: Tuesday, July 16, 2002 8:09 AM
Subject: Re: [MLB-WIRELESS] Microtik 200mW Wireless cards for $125USD


> Hello Andrew,
> 
> AD> These cards are expensive compared to the enterasys cards but they
> AD> are also alot more powerfull, could make for good use with an omni
> AD> for an AP?    
> 
> This may not be quite true, if the card's RX is poor then the
> additional TX isn't of much use, as it will send much further
> (reducing reuse) while being able to "hear" much shorter distances...
> 
> Using higher gain antenna with lower output card on the client side of
> things is a much more efficient way to use the spectrum... For example
> of this see Tony Langdon's post on the 20th of June, about the
> benefits in using less output with higher gain antenna... higher
> output could effectively limit your useable signal...
> 
> Even a 15dBm card with an 8dBi omni is capable of usable signal at
> 20km or further, by using a high gain antenna at the client end, such
> as a 24dBi galaxy... even just using a cantenna the range is capable
> of being 10km or further... and 2 24dBi dishes have the ability to do
> 100km on a 15dBm cards...
> 
> -- 
> Best regards,
>  evilbunny                            mailto:evilbunny at sydneywireless.com
> 
> http://www.SydneyWireless.com - Exercise your communications
> freedom to make it do what you never thought possible... 
> 

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