Extreme Wireless 7562 AP


What is the range (coverage distance ) of Extreme Wireless 7562 AP ?

7 replies

Userlevel 4
Internal or external Antenna? Always depends on environment and antenna. What data rate / signals you need and what client. It's not possible to say you can do like 50m, 200m or 500m.

We used it with high gain antennas with ZEBRA MDEs and a distance about 1.000 meters. But not sure if you can call this a WiFi connection, MCS 0.

I prefer to plan with a maximum distance of 100m between AP and client.
Userlevel 2
Timo wrote:

Internal or external Antenna? Always depends on environment and antenna. What data rate / signals you need and what client. It's not possible to say you can do like 50m, 200m or 500m.

We used it with high gain antennas with ZEBRA MDEs and a distance about 1.000 meters. But not sure if you can call this a WiFi connection, MCS 0.

I prefer to plan with a maximum distance of 100m between AP and client.

Hi Timo,

With your experience, could you give me the kind of antenna utilized for AP7562 which can be help wifi signal to reach to -80~-75 dBm at 500 meters distance?
Userlevel 4
Timo wrote:

Internal or external Antenna? Always depends on environment and antenna. What data rate / signals you need and what client. It's not possible to say you can do like 50m, 200m or 500m.

We used it with high gain antennas with ZEBRA MDEs and a distance about 1.000 meters. But not sure if you can call this a WiFi connection, MCS 0.

I prefer to plan with a maximum distance of 100m between AP and client.

Hi,

do not try this 😉

If you want, you need to check booth sides. If you'll use an mobile device at the other end, the antenna is very bad. Best way is to use a high gain directional antenna. The signal gain from the antenna is added to booth ways, sending and receiving. This is why you should use more antenna gain instead of higher TX power.

You can check what antennas are available. Try it with 10dBi antenna gain. But it depends from site to site. Is it a big open area without reflection, is it a area with reflection? Have the client a line of sight? Without testing it's not possible to give a recommandation.
Userlevel 2
Timo wrote:

Internal or external Antenna? Always depends on environment and antenna. What data rate / signals you need and what client. It's not possible to say you can do like 50m, 200m or 500m.

We used it with high gain antennas with ZEBRA MDEs and a distance about 1.000 meters. But not sure if you can call this a WiFi connection, MCS 0.

I prefer to plan with a maximum distance of 100m between AP and client.

Thanks Timo, with a long distance, we need to use a high gain directional antenna + high Tx Power.

The environment I want to deploy between site to site is a open area without reflection and barrier. Should you advise me a suited antenna part number, is ML-2452-PNL3M3-1 or ML-2452-PNL3M3-1 available?
Userlevel 5
Hello Rock,

There are too many variables involved in trying to determine the range to an AP so this information is not readily available. A site survey will normally have to be done in such cases.

Thank you,

Chris
Userlevel 6
Rock,

This is a common question, but the wrong one to ask. The AP can blast a tremendous amount of power and be heard from a looooong distance but the clients will not be able to transmit with sufficient power to reach the AP with a significant signal.

Imagine you're in a stadium listening to a rock band. You'll hear perfectly the music and what the players sing, even if you're in the worst seat in the stadium, but they will not be able to hear a word you say...

To calculate the maximum coverage you need to determine which is the weakest client (in terms of transmission power) you want to support, and the minimum speed you want to support. The lowest the speed you allow, the farthest from the AP you can be. But remember that when one client transmits, the rest have to wait, so if you allow low speeds (like 1 Mbps) your wireless network wil drag.

Want an example of what a slow client can do to your network? check the Zootopia trailer (https://www.youtube.com/watch?v=iteqM_FeJS8) starting at 0:18... (hint, Hooper= .11ac client, Sloth =.11b client)
Userlevel 6
dflouret wrote:

Rock,

This is a common question, but the wrong one to ask. The AP can blast a tremendous amount of power and be heard from a looooong distance but the clients will not be able to transmit with sufficient power to reach the AP with a significant signal.

Imagine you're in a stadium listening to a rock band. You'll hear perfectly the music and what the players sing, even if you're in the worst seat in the stadium, but they will not be able to hear a word you say...

To calculate the maximum coverage you need to determine which is the weakest client (in terms of transmission power) you want to support, and the minimum speed you want to support. The lowest the speed you allow, the farthest from the AP you can be. But remember that when one client transmits, the rest have to wait, so if you allow low speeds (like 1 Mbps) your wireless network wil drag.

Want an example of what a slow client can do to your network? check the Zootopia trailer (https://www.youtube.com/watch?v=iteqM_FeJS8) starting at 0:18... (hint, Hooper= .11ac client, Sloth =.11b client)

Impressive explanation!

Regards,
Ondrej

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