[Soekris] [soekris] net4826 + two 400mw miniPCI?

[Michael Bell]

Jeongki,

I have had this card in for extensive testing (laboratory and 
real-world) so I am quite familiar with it.  I have one personally in my 
net4521 however I did not choose it because of the 26dBm TX capability 
(I have access to 20W amplifiers if I really need power) but rather 
because of the chipset.

Please keep in mind that TX is only one half of the equation.  Receive 
sensitivity plays a big role in how well the link will establish and 
maintain communication.  With proper antenna selection and alignment, 
even lower power (high receive sensitivity) cards can perform remarkably 
well.

That being said, your question regarding power consumption.  Testing 
showed the card at peek *output* to draw between 692mA and 752mA during 
a 24 hour stress test reaching a maximum operating temperature of 47 
degrees fahrenheit above room temperature.

2 of these cards operating at peek *output* and assuming the worst case 
power consumption observed would mean that the net4826 would need to 
provide 1.5A @ 3.3V or 4.95W.  I haven't tested the net4826 boards so I 
don't know what it's voltage regulators are capable of providing to the 
Mini-PCI slots however since the board cannot draw more then 12 watts of 
power you may encounter difficulty with them cranked up that high (let 
alone FCC violations depending upon your antenna selection).

Not sure that helps you but maybe somebody on the list has already 
tested the net4826 and can answer the power supply question.

**NOTE**
I specifically used output, and not throughput above.  The transmit 
power of the card is reduced by nearly 4dBm @ 54Mbps 802.11g and 12dBm @ 
54Mbps 802.11a (5.7ghz)

Mike
> Thanks for reply.
> I'm using TriBand Rubber Duck Antenna(omnidirectional antenna). I
> couldn't find any better gain than that of this antenna which I can
> use a/b/g together.
>
> Thanks,
> JK
>
>
> On 1/27/07, Egbert Jan <egbert at vandenbussche.nl> wrote:
>   
>> Are you using this config as repeater in some way? When you need more
>> (bundeled?) power, use antennas with a higher gain. You will be more
>> efficient with your input power. An antenna with 3 dB more gain will give
>> what you need. If you need omnidirectional radiation you might need more
>> power...
>>
>> Regards
>> Egbert Jan NL
>>
>>
>>
>> -----Original Message-----
>> From: soekris-tech-bounces at lists.soekris.com
>> [mailto:soekris-tech-bounces at lists.soekris.com] On Behalf
>> Of Jeongki Min
>> Sent: Saturday, January 27, 2007 3:43 AM
>> To: soekris-tech at lists.soekris.com
>> Subject: [Soekris] [soekris] net4826 + two 400mw miniPCI?
>>
>>
>> Hi,
>>
>> I have a question about using Soekris net4826 with two 400mW MiniPCIs.
>> Currently I'm using two 200mW MiniPCIs, but I think I need more tx power.
>>
>> I'm considering to buy product like below;
>> http://www.netgate.com/product_info.php?cPath=26_34&products_id=279
>>
>> I really don't know about hardware.:(
>> It might be stupid thing, but I heard that I have to be careful about
>> electric power consumption when I choose MiniPCI.
>> Do you think there is no problem on using two 400mW MiniPCI on soekris
>> net4826?
>> And if I use 400mW MiniPCI, could I can see better tx power?
>>
>> I would really appreciate it if you give me any information.
>>
>> Thanks for useful information always,
>> JK
>>
>>     
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