2.4 or 5.8 for my setup?

RouterOS General
1

hi guys
I am setting up an ap on the top of a 14 story building. my clients will all b within 5km radius of the ap with LOS.
i am nt sure which band 2 use? 2.4 or 5.8?
there are quite a few 2.4 networks in the area.
if i use 5.8. hw many dBi sector antena shuld i use for the ap and for clients?
thanks

2

Hi,

I think better to use 5,8 GHz.

You can use 3 sector antenas with 14-17 dbi and 19 dbi for costumers. This is too much for 5 Kms.. but with this you can play with TX Power in wlan configuration.

3

hi martin,
why do u say it is too much?is the 14dbi 120 degree ok bt the 19 dbi grid 2 much?could i rather use a 14 dbi bt increase the tx power?
thanx

4

yes,

but is better much power so you can reduce TX power than have only -85 in your connection.

I think 14+19 is ok with 100 mW and later reduce TX power.

5

is it possible 2 give an estimate of the increase in throughput with a 19 dbi instead of 14dbi for the cpe? thank

6

i have 3x120 degree sectorial 2.4ghz 15dbi antennas and with 60+ clients working great. I have clients connected till 4km with 15dbi grid antenna with a good rx signal. U can get -70 or better with this config on 5km i suppose :smiley:(with 15dbi grid). I think that there is no need to spend much money to build a very good system(and more expensive on client side to) when u don’t need it. 2.4 fits your needs for the radius of 5km.

7

thanks n2m bt how many other 2.4 ghz networks r in your area? i hav about 20 bt most are home networks

8

thanks n2m bt how many other 2.4 ghz networks r in your area? i hav about 20 bt most are home networks

9

thanks n2m bt how many other 2.4 ghz networks r in your area? i hav about 20 bt most are home networks

10

thanks n2m bt how many other 2.4 ghz networks r in your area? i hav about 20 bt most are home networks

11

ohh there are more than 30 aps on the area :smiley:

12

wow 30, i should b fine then haha

13

yes it will be just fine :wink:

14

remenber gentlemans, the less frecuency in hertz the more signal travel along , for that signals in 2.4 band covers more distance but has more noise, 5ghz travels less along , far… less but less noise, the trick with 5ghz is the power inserted for transmision, thanks and excuseme for my poor english.