Wireless Security
max transmit powers Aug 01 2011 09:19PM
Robin Wood (robin digininja org) (1 replies)
Re: max transmit powers Aug 03 2011 04:57PM
Richard Farina (sidhayn gmail com) (1 replies)
Re: max transmit powers Aug 04 2011 02:15PM
Robin Wood (dninja gmail com) (1 replies)
On 3 August 2011 17:57, Richard Farina <sidhayn (at) gmail (dot) com [email concealed]> wrote:
> On 08/01/11 17:19, Robin Wood wrote:
>>
>> Two questions here, first, whats the best way to find out the maximum
>> transmit power of any given card? I assumed it would be on the FCC
>> site but for one of my Alfa cards, a awus036eh, last time I searched
>> their database I managed to find a card with the same id but the photo
>> and spec was completely different. Now I'm trying to find it again I
>> can't even find that one.
>
> https://fjallfoss.fcc.gov/oetcf/eas/reports/GenericSearch.cfm
> Search for the fcc id not the card name.

Whats the best way to find the FCC ID? I've got the following card:

http://www.wikidevi.com/wiki/ALFA_Network_AWUS036EH

and can't find an FCC ID for it anywhere.

I'm only after this information so I know how it all works, I've not
had a time where I've needed to crank up the power beyond anything
that the defaults will allow and I've got some good antennas if I need
to.

Robin

PS I know the card is a 200mW, just using it as an example.

>>
>> And second, what is the risk of increasing the transmit power beyond
>> the level the card is designed to run at? Will the cards cap
>> themselves and just run to their maximum or will they try to go higher
>> than they should and potentially burn out or fail? Or is it a mix of
>> both?
>
> Often people believe the max tx power of a card was chosen just because of
> regulatory limitations, however it is also very likely that the max tx power
> was chosen because after that the signal degrades or the card gets damaged.
>
> Realistically, the max tx power of the card should not be exceeded because
> the signal will almost certainly degrade significantly, and you have the
> potential for damaging the card.  There were many reports of people using
> the hipower patch for that awus036h that experienced card issues, failures
> transmitting, and even buzzing sounds after very short usage. If you need
> more tx power, buy a better card, or a good amp.
>
> -Zero_Chaos
>>
>> Robin
>>
>> PS I'm thinking a lot about wifi at the moment, can you tell?
>>
>
>

[ reply ]
Re: max transmit powers Aug 04 2011 02:59PM
Richard Farina (sidhayn gmail com)


 

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