AirMAX - nternet Service Provider
Saturday, 17 III 2018     
AirMAX - Internet Service Provider
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Technical glossary

Radio-based Internet connection – recommended connection methods

We would like to interest you in device sets operating by means of taking advantage of various technologies and frequencies:

802.11a (5 GHz band):

The discussed standard was created in 1999 and the very first device taking advantage of it – in 2001. Its basic speed is 54 Mb/s, which covers 12 non-interfering working channels.

In practice, the 5 GHz band is exploited to much a less extent, can manage a high number of individual channels, is faster, and Polish legal regulations allow for broadcasting with greater power than in the case of the 2.4 GHz. Higher speed transfer rates (from 1 to 12 Mbps) are offered by our company only within the framework of this band. The utilization of the 5 GHz band is recommended by the AirMAX Company especially in towns with more than 4 thousand citizens.

In order to fully enjoy operating in this standard, we offer you two types of WSIP routers capable of handling both 2.4 and 5 GHz bands, cables, and client’s antenna. In the case of devices taking advantage of the 802.11a standard, one can choose both internal ones which do not require the connection by means of long coaxial cables (such devices are installed in a close proximity to an antenna), as well as external ones equipped with three slots allowing the user to connect up to 3 computers. It should be kept in mind that the latter require a coaxial cable to be used, hence – the received signals are poorer.

802.16d (3.5GHz band) - WiMAX

It is assumed that the maximal bandwidth of the WiMAX technology is close to 75 Mb/s. It is a very high speed that may be in the future competitive for traditional wired solution. In order to achieve such a transmission speed, the receiver cannot be situated further than 10 km from the transmitter. However, the technology itself can manage connections up to 20 kilometers from the transmitter. In the case of distances up to 2-3 km, there is no need for optical visibility.
In order to allow for the full satisfaction with the standard, we offer our customers a dedicated access device, the so-called CPE with an in-built (integrated) antenna, as well as with a LED signal power indicator. As of now, the range of the WiMAX is limited to several localities (see the map).

802.11n - MIMO

The new 802.11n standard covers wide wireless networks. It allows for transfer speed up to 100 Mb/s and in some cases – even to 300 Mb/s.
In order to make is possible to transfer data with such a speed, the Multiple Input Multiple Output (MIMO) technology is utilized, based on incorporating numerous receiving/transmitting antennas. In the discussed scenario, the signal is transmitted from several sources and received in several places (in a standard system - 2x2). Furthermore, 802.11n can exploit numerous transmission channels to create a single transmission, which theoretically doubles the achievable transfer speed.
Bandwidth in a properly coded system taking advantage of all the available systems oscillates around 600 Mb/s.

In order to allow for the full satisfaction with the standard, we offer our customers a dedicated access device, the so-called CPE with an in-built (integrated) antenna, as well as with a LED signal power indicator. As of now, the range of the MIMO is limited to several localities (see the map).


xi The 802.11ac is also known as the „Gigabit WiFi” and is yet another, fifth generation of wireless networks, the main aim of which is to allow for transfer speed exceeding 1 Gbps. The specification of the standard assumes the usage of the 5 GHz band only, so backward compatibility will be available only for devices utilizing the said band (802.11a/n).

Major improvements of the 802.11ac protocol, especially in comparison to older standards, are as follows:

  • Better bandwidth
  • Improved modulation
  • Increased number of volumetric streams
  • Multi-user MIMO
  • Updated RTS/CTS mechanism
  • Unified beam shaping
  • Increased max. aggregated frame size

Theoretical transfer speed is equal to 2600 Mbps, whereas the real one is 1800 Mbps


802.11ad is four time faster than the 802.11ac standard. It operates at the frequency of 60 GHz, but is also compatible with 5 GHz frequency-based devices.

Such high speeds (highly exceeding the Gigabit Ethernet standard) ensure smooth transfer of, for example 4K HDR and UHD Blue-ray clips, as well as advanced VR data.

Devices operating in the 802.11ad standard can be an alternative for wired solutions while connecting:

  • TV sets
  • NAS storages
  • set-top boxes
  • smartphones
  • UHD wireless cameras

Bandwidth up to 7 Gbps.