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All the Perl that's Practical to Extract and Report

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  • Not working directly above/below is a "feature" of omnidirectional antennae often used in WiFi gear. If it works in the next room horizontally but not the below room vertically, try standing the device at an angle to the horizontal, say 30 degrees or so.

    Omnidirectional antenna are (usually) only omnidirectional through one plane, almost always horizontal. The further you get away from the device the less apparent this becomes, but then you start loosing range due to low power transmission. That's why most WiFi gear has stalk antennae on a swivel mount; so you can angle the antennae at 30-45 degrees or so to improve vertical coverage throughout upstairs/downstairs rooms.

    One of the pirate radio stations I worked on had a whopping 200 watt FM transmitter (for comparison, most local radio stations manage with about 50 watts) and a two metre omnidirectional antenna stuck on the top of the tallest block of flats in the West Midlands, with reception reports from 70 miles away, yet you couldn't receive it whilst standing in the ground floor of the same block of flats below the transmitter.