Technical Discussions

Grandstream brings heat to the Wi-Fi market with their affordable NEW managed AP!

Grandstream brings heat to the Wi-Fi market with their affordable NEW managed AP!

Grandstream Networks breaks into the wireless and network industry with the innovative GWN7610 Wi-Fi access point. Keeping true to their quality and disruptive pricing, the easy-to-manage GWN7610 3×3 AC access point offers high-end features and performance without high-end pricing. This innovative Wi-Fi access point offers wider coverage, stronger security and easier network management capabilities than most competing Wi-Fi APs in the market.     ...
Part 3 of 5: Introduction to Wireless Communication (Basics of Channel Assignment)

Part 3 of 5: Introduction to Wireless Communication (Basics of Channel Assignment)

Channel-width, co-location and reuse patterns Operating in today’s outdoor wireless environment can be challenging, especially when using non-licensed frequency bands such as 2.4GHz and 5GHz.  This is where you, the outdoor wireless operator, needs to be conscious of channel spacing as frequency and available spectrum is fast becoming a scarce commodity, especially in densely populated areas. Each wireless network receives a centre frequency and channel spacing relates to the size and position of the carrier spectral mask. Having greater channel spacing means less overlap, which means less interference.  Overlap in channels are undesirable as it causes interference which in turn cause a higher latency and decreased throughput in your wireless networks. Because most outdoor wireless antennas have a high front-to-back ratio, meaning more of the RF energy is projected forward and less ‘leaking’ towards the back of the antenna, you can place antennas and radios in a back-to-back configuration or setup. https://www.electronics-notes.com/articles/antennas-propagation/yagi-uda-antenna-aerial/gain-directivity.php   A good practice in outdoor wireless networks is to design your base station that has multiple access points, with a frequency re-use pattern.  This is based on the beam-width of the access point antenna, for example – with a 90 degree sector antenna, an ABAB configuration is possible. Channel width refers to the size of your channel, for example either a 10MHz, 20MHz, 40MHz or even 80MHz. With the larger channel width such as 40MHz and 80MHz, you are able to improve your throughput, however you Peak Spectral Density is spread across a larger channel and thus means that you have a greater power loss, resulting in a reduction of distance from the 80MHz channel compared...
Part 2 of 5: Introduction to wireless (Fundamentals of Wave Mechanics)

Part 2 of 5: Introduction to wireless (Fundamentals of Wave Mechanics)

Decibels, EIRP, Free Space Path Loss and Line-of-Sight   Knowing dBm from dBi So we understand that outdoor wireless equipment uses electromagnetic waves to transmit data from one point to another, and in doing so, you can add a power ratio to the output power of your radio.  This power ratio is known as dBm.  We use dBm to express the large to very small numbers of power in which outdoor wireless equipment can operate in. To convert milliwatt (mW) to dBm, we use the rules of 3’s and 10’s, with 0dBM being equal to 1mW. If you add 3dB, you have to double the mW value and if you add 10dB, you have to multiply your mW value with 10.  For example, going from 0dB to 3dB, you will go from 1mW to 2mW (double).  If you go from 3db to 13db, you will go from 2mW to 20mW (times 10). Likewise if you decrease with 3dB, from 0dB to -3dB, you will go from 1mW to 0.5mW (half) and if you decrease with 10dBm, from -3dBm to -13dBm, you will go from 0.5mW to 0.05mW (divided by 10) Figure 1. dBm vs mW (www.rfcafe.com) dBi on the other hand is applied to antennas, and this indicates the gain of an antenna.  A low gain antenna for example an 8dBi antenna, will have a large beamwidth or radiation pattern.  A high gain antenna, will have a narrow or more focused beamwidth.  A high gain antenna is useful in a Point-to-Multipoint (PtMP) scenario where you have one customer that is far away from your access point with a low...
Did You Know? You can now design your own MikroTik ceiling AP cover

Did You Know? You can now design your own MikroTik ceiling AP cover

Although small and compact, a ceiling or wall mounted Access Point can really stick out and ruin the design aesthetic of the environment it has been placed in. With MikroTik’s 3D printer friendly design files for the cAP lite, you can now design you own MikroTik AP cover to suit your needs. Whether you want to make the AP less conspicuous, or design something that will complement the environment; the customisation possibilities are endless!   cAP lite The cAP lite access point has a clean and simple design which blends into any environment. Small but powerful, the cAP lite is perfect for public locations, hotels, airports and shopping malls, where you can place it out of sight or customise it to blend with the environment.   Custom case 3D model file and instructions are provided on...
Barking up the wrong tree with your Enterprise Wi-Fi offering?

Barking up the wrong tree with your Enterprise Wi-Fi offering?

Ubiquiti is taking on the big dogs in the enterprise wireless market with the launch of their new UniFi 802.11ac, Wave 2 Access Points Highest Performance, Best Value The UniFi AC HD AP is the highest performance AP in the industry – and the best value. Learn More The first UniFi 802.11ac Wave 2 AP for use in high‑density deployments. The UniFi® AC HD AP features simultaneous, dual-band, 4×4 MU‑MIMO technology to communicate with multiple clients at the same time-significantly increasing multi-user throughput and overall user experience. UniFied IT Management UniFi creates a highly scalable, end-to-end system of devices spanning multiple locations across the world — all controlled by a single interface accessed via the Internet or local network.   With the UniFi Controller software running in a NOC or in the cloud, administrators can manage multiple sites: multiple, distributed deployments and multi-tenancy for managed service providers.   Below are some deployment examples     Pre-order your Wave 2 AP...
Jet Air brings affordable RADWIN performance to the WISP market

Jet Air brings affordable RADWIN performance to the WISP market

The JET AIR series is a RADWIN’S new addition to their 5 GHz portfolio that also includes a JET PRO 750 Mbps Beam-forming base station designed for Service Providers serving both residential and business customers with a commitment for SLA. RADWIN’s unique bi-directional Beam-forming provides the benefit of uplink interference immunity and also delivers longer range and higher downlink sector capacity as well as greater spectrum efficiency. Attend RADWIN’s Product Launch and see how the NEW Jet AIR radios are not only brings affordability to the WISP market but also delivers industry-leading broadband speeds. The launch will take place at MiRO’s Gauteng, Durban and Cape Town branches make sure you don’t miss out. Click Here For More Information    Seats are limited so book now!  ...