Transmitter

8 reasons to turn down the transmit power of your Wi-Fi

By default almost all WiFi access points transmit at full power (100mW). This gives maximum coverage and users see a good signal (“full bars”). However, there are good reasons to turn down the transmit power to a fraction of the maximum.

Lock logo

How secure is your WiFi?

Do you have a shared password to the WiFi network? When was it last changed? Hasn’t anyone left the company since?

UniFi on GCP

Set up UniFi Controller on Google Cloud Platform

Google offers one free virtual machine on Google Cloud Platform. This script will make setting up a UniFi Controller on GCP a breeze and it includes all the goodies. No command line required, everything is done in the GCP Console and it takes 15 minutes total and that includes transferring your current sites to the cloud. You should try this!

UniFi logo

Ubiquiti UniFi WiFi product line

UniFi network devices share common management through UniFi Controller. However, how all the pieces fit together is not obvious at first sight.

Radar

What are WiFi DFS frequencies and should I care?

The regulatory bodies are now strict about DFS requirements on WiFi access points. This applies to both new devices and updates to old ones. A simple firmware update may cause a lengthy delay before the network is operable.

WiFi 2.4 GHz

WiFi 2.4GHz band

The original Wi-Fi (also known as 802.11) used the 2.4GHz band. It is still the more popular band since virtually all devices support it. That makes it more crowded and it is also more prone to interference than the alternative 5GHz band.

WiFi 5GHz band and wide channels

On 5GHz WiFi there are more channels and less interference, both are important for fast wireless communications. The bandwidth can even be increased multifold by combining channels.

WiFi heat maps

It is fairly easy to create a heat map of a WiFi network that shows the signal level across the coverage area. What’s the use, what’s the benefit of surveying and is it worth paying for?