I was thinking of getting an amp for my card (not my AP)
Is this possible as the signal being sent by the AP is still the same,
So I can shout louder but if I have a higher receive then I also have a top range hearing aid?.
Sorry to put it into lay-mans terms, but I hope oyu get the idea.
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Amplifiers of this type tend to be just cheap wideband amplifiers that amplify everything with very little or in some cases no filtering at all. You would need to be getting into fairly high grade commercial equipment before you would even start to see any kind of reasonably effective filtering involved. None of the above even takes into account the affects cross channel interference or having more than one piece of equipment operating on the same channel will have. That is not saying that amplifiers cannot improve things, just that they are not always the solution they are portrayed as being as they can introduce their own set of problems, and in some cases make things worse.
Nearly forgot to add this important point
ALL amplifiers produce noise, with or without any input to them, just as does ANY electronic circuit.
I'm now looking for a suitable antenna for my new Alfa. It's definetely improved things in my initial tests and it's also nice to see accurate 'pwr' ratings in airodump (my Edimax was totally wrong, showing 100 - or more for all AP's).
Are the Cantenna type devices worth looking into? I'm interested in knowing what kind of practical range can be achieved with a directional antenna. Be quite a cool experiment as I have a lot of open space near my apartment.
I don't know much about these amps but they do make a difference on transmitting and receiving I have found, they are bi-directional amps. Even though the transmit signal may go a lot further than you could receive
Originally Posted by ebay adI thought the amp from ebay took cross channel interference and equipment on the same channel in to consideration and uses tdd to remedy this and improve stability ??? But like I say I know nothing about thisOriginally Posted by danets website
Better RX sens is for sure available in consumer electronics and can work together with better antennas to help boost/improve your RX signal. For example, on my SAT-TV dish I had a LNB with a 0.7dB noise figure and was having problems receiving some channels. When I upgraded my ($10) 0.7dB LNB to a ($30) 0.3dB LNB my reception improved alot (the 0.3 refers to the amount of the noise the amp itself insets, and a lower number is better. Zero would be the best, in theory)
Also, with WiFi, I had a card rated with a min sens of -89dBm for 1Mbps, and when I upgraded to a card rated with a -92dBm at 1Mbps my range improved alot (the price difference in card was maybe $20). Every 6dB improvement is a doubling of the signal distance, so I gained a 50% increase in distance by getting a card with a 3dB lower RX sens. And it wasn't that expensive.
So I'd say to get the best range, a combo of a good antenna and a receiver with a good RX sens together is the best way to go. And if you look around you'll probably find they are commercially available and aren't that expensive. ...but I guess most people don't think about that (as per some of the discussion in this thread), they just look at TX power, since that's what they equate distance with.