[Soekris] 802.11b: PCMCIA vs. MiniPCI?

[Jim Thompson]

On Mar 9, 2004, at 4:42 PM, Raymond Hall Haro wrote:

> Jim Thompson wrote:
>
>> I've observed 23dBm from the same miniPCI card in other boards.  
>> (e.g. the product I built for Vivato)
>>
>> are you sure you're not losing somewhere else (pigtails, etc)?
>>
>
> Really observed, or is it the output from iwconfig?

Really observed, as in continuous transmit mode and an $80,000 spectrum 
analyzer.

> I've setup several links using the 4521 and senao 200mW cards, two of 
> them spanning more than 14 miles each.
> I tried to replace the 4521/NL2511cdPLUS with 4501/EL2511MP  and the 
> long links didn't work (using the same 24dB antennas and lmr400 
> cabling)
> I doubt the loss is in the pigtail (both pigtails are 6")
>
> regards,
> Raymond Hall
>
>> the 'spec' is +/- 2dBm, (for both cards), btw.
>>
>> Jim
>>
>> On Mar 9, 2004, at 1:08 PM, Victor Grau-Serrat wrote:
>>
>>>
>>> I'm using Netgate both PCMCIA and MiniPCI wireless cards with HostAP 
>>> drivers and they run fine under
>>> Linux (2.4.18). The specifications say that for the PCMCIA 
>>> (NL-2511CD PLUS EXT2) the output power is
>>> 200mW (23dBm), and for the MiniPCI (EL-2511MP PLUS) the 
>>> specifications say that output power
>>> depend on input current: 160mW (22dBm) if input current is 750mA, 
>>> and 65mW (18dBm) if input
>>> current is 500mA. Although the specifications from Soekris say that 
>>> limited power is available from the
>>> PCI sockets (and I'm not using the standard one), I was expecting to 
>>> get the desired 22dBm, but
>>> repeated measurements I've made indicate a difference of performance 
>>> of 3 to 6 dB between the
>>> mentioned PCMCIA and MiniPCI, suggesting that the MiniPCI ones are 
>>> much less powerful than the
>>> PCMCIA counterparts.
>>>
>>> Anyone has observed similar results?
>>>
>>> V.
>>>
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>>
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