Juergen Grau data the new DIY audio spectrum analyser called the Magilyzer EM800 complete with EM800 Magic Eye tubes, which has this week launched via Kickstarter and is now available to back with ...

A spectrum analyzer is a device that measures and displays Signal amplitude (strength) as it varies by frequency within its frequency range (spectrum). The frequency appears on the horizontal (X) axis ...

I have two cards, and a magnetic-mount "whip" antenna, which plugs into a card. You could build your own WAP with this; note that this is not 802.11b/g capable by itself. You can't go and connect to ...