WiFi Tx power question

[jd1008]

On 09/19/2014 04:50 PM, Rick Stevens wrote:
> On 09/19/2014 02:53 PM, jd1008 issued this missive:
>>
>> On 09/19/2014 01:14 PM, Heinz Diehl wrote:
>>> On 19.09.2014, jd1008 wrote:
>>>
>>>>            Bit Rate=72.2 Mb/s Tx-Power=15 dBm
>>>> So, reason I am asking is that I would like to increase Tx power to
>>>> 30dBm
>>>> due to poor connectivity with the hotspot router.
>>> There are two barriers:
>>>
>>> 1. the capability of your adapter
>>> 2. CRDA
>>>
>>> For most countries, 2.4 GHz is limited to 15 dBm, so iwconfig won't
>>> help. The only thing you can do is to check if your router has WMM
>>> enabled for the 2.4 GHz band. If so, you have a chance that your
>>> adapter can use HT/VHT (aka 802.11n/ac), which in turn allows a
>>> slightly higher tx power (but quite sure not 30 dBm).
>>>
>>> Btw: increased tx power also leads to increased noise. You should
>>> consider other ways to improve the connectivity to your AP (miving it
>>> closer, using a repeater...)
>>>
>>>
>> Thank you Heinz.
>> I am also looking for a card that has much higher Rx sensitivity
>> (i.e. can receive lower strength signals without problems).
>
> Try to find a USB adapter with an external antenna. This is one and I
> believe it works with Linux:
>
>     http://www.newegg.com/Product/Product.aspx?Item=N82E16833704045

Well, what about this one with long range capability (whatever that 
means :) :)

http://www.ebay.com/itm/TP-LINK-TL-WN822N-Wireless-N300-High-Gain-USB-Adapter-WIFI-Adapter-Long-range-/261441336867?pt=US_USB_Wi_Fi_Adapters_Dongles&hash=item3cdf1e3623