Hello
I want buy wireless amplifier for increasing the range.I have question this amplifiers don’t do anything bad for my radio cards or RB?
In my item list have 5W Bi-directional amplifier
Details
Transmit Gain:up to 33 dB
Output Power: 5 Watt (+37 dBm)
TX Input Power:3 dBm (2 mW) min, 23 dBm (200 mW) max
Receiver Gain:10-14 dB, 12 dB typical
Noise Figure:3.5 dB typical
I can use it?
Thank you
You have to look at the maximal power limit in your country so you stay in legal power levels!! Buying a AMP often breaks this law!
Yes, but question is amplifiers don’t do anything bad for my radio cards or RB?
AMP can’t burn my cards or RB’s?
"Law’s are made for break them…"\ 
Well.. If you have a mismatched antenna and get high SWR (reflected power) then you might burn the radiocard if you don’t have a dummyload built-in inside the amp that takes care of just that! My advice is to have a good antenna, place it at a high place (tower or roof), short coax cable and good grounding. I wouldn’t use a amp for that kind of link. Plus if you only have it on one side, the other side will hear you well but not the other way around so you will not gain much on that setup!
Also, you can buy a high power card from MikroTik, they are really good and gives you the latest technology like draft-n. That gives you high power in legal limits and if you go for the “draft-n” cards you can get like 150mbit/s bandwitdh so put your money on that instead!
AMPs are generally for beginners that don’t know what they are doing. 5W amps are unnecessary and illegal for unlicensed wireless in all countries that I am aware of (and have radio communication rules).
Most of us have learned to work within the rules and make a good business of it.
I am speaking with over 10 years of wireless experience as a WISP.
Tom
"Anarchy is the basic rule of a no rule society."\ 
Thank you roc-noc.com
I will change my mind i will stay in rules…
I will not use AMP
agreed with roc-noc.com…
Try to perfectly on your first installation then you will found that, that Amp is not necessary.
Off course, the antenna selection will be another important thing you have to study and understand it.
Transmit Gain:up to 33 dB
Output Power: 5 Watt (+37 dBm)
TX Input Power:3 dBm (2 mW) min, 23 dBm (200 mW) max
Receiver Gain:10-14 dB, 12 dB typical
Noise Figure:3.5 dB typical
And also wireless internet is a 2 way (Bi-directional) service (rx/tx both ends) and while we all would like to have extra power from the AP but have to remember that that extra power will have a negative effect on the overall performance?
what are you using at present.
3 words
Amplifier is ineffective …
One of the most important this to note:
Amplifiers amplify EVERYTHING, including the noise.
As everyone said, good installation, configuration and a good antenna is much better than an Amp. Amplifier also amplifies noise, so they only work in perfect noiseless installations, on links that are already good.
Thank you!!! i have had to fix multiple ap’s because someone that it was better to have a AMP on it. On the 2.4 range you are not only amping your signal but everything else as well. Sooner or later its going to come back and bite you in the ###. Not to mention you make it very difficult for anyone else to use the 2.4 range as well.
If you think you need a wireless amplifier - then you might be doing something wrong…
On point-to-point links , use a good quality high gain dish antenna.
On Multi-Point links, use a good quality card (1-watt max xmit) and a good quality omni or sector antenna. And have the clients use good quality high-gain directional antennas pointing at the AP.
One of the biggest errors I see all of the time is a big ol 1-watt (or more) amplifier on the AP antenna. Yea clients might hear the AP better but the clients are using 30-mw transmit cards in notebook computers and can not make the trip back to the AP.
In a huge croud of 10,000 people - If I have a bull horn amplifier then everybody might hear me pretty good - but I still cant hear everybody talking back to me.
The not-so-secret to making a good high quality wireless network is antenna antenna and antenna. Amplifiers only inject noise on a wireless network.
Tom Jones - North Idaho
In a huge croud of 10,000 people - If I have a bull horn amplifier then everybody might hear me pretty good - but I still cant hear everybody talking back to me.
plus, others will start getting bullhorns to make sure they are heard, and in the end, there will be lots of noise but no changes in situation