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Subway wi-fi

A new subway line has opened in Milan, the M4 connecting the city airport with the city center. It’s a driverless fully automated transport system.

The active section of M4 subway in Milan.

There’s a WPA2-Personal SSID in every station, powered by Cisco APs. No wi-fi in the tunnel between stations.

As usual, quick wi-fi analysis and packet capture done with my Analiti for Android app.

You can download the pcap file here.

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Build your own wi-fi stand

I built my own wi-fi stand with 7€ worth of hardware store supplies. It fits nicely to my 30€ nondescript tripod for my AP on a stick surveys.

It’s basically a 1000mmx25mmx1mm steel strip, bent in a rectangle and bolted fast to an iron plate. It is slightly wider than the usual 23.8mm (15/16″) ceiling rail.

In horizontal mount position, heavier APs like this Extreme Networks 3935 are a bit wobbly, but stable nonetheless.

The vertical position is done rotating the mount and attaching the AP sideways.

I can even fit an outdoor AP 3965 with its heavy mounting plate.

I simply hang the outdoor AP 3965 using the mounting plate and the pole mount straps. I insert the stand above for safety reasons, and use work gloves for handling the AP because of the pole-mount sharp edges.

This wifi stand may not be stylish or refined, but it’s very practical!

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My Ekahau license expired during a survey

…and it took 9 days to restore it.

Two weeks ago I was doing a survey with the iPad, when my Ekahau license was suddenly suspended. I was logged out of the Survey for iPad app and lost access to all my cloud files. After 9 days the license was restored, and all has been well since. Here is my experience and lessons learned.

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Firts steps with Ekahau Survey for iPad

A couple of weeks ago I upgraded to Ekahau Connect and an iPad Pro for my RF surveys. I’ll write my first-hand experiences learning to use it and doing actual work.

Bottom line: get Connect and an ARK-enabled Apple device if you need to speed-up survey operations and if you (or your employer) can afford the price.