I'm www.netgate.com The closest thing (though it's completely different) to what is covered in the article is here: http://store.netgate.com/24-GHz-9-dBi-Linea

I'm www.netgate.com The closest thing (though it's completely different) to what is covered in the article is here: http://store.netgate.com/24-GHz-9-dBi-Linear-Feed-Antenna-N-Female-P337C42.aspx http://store.netgate.com/24-GHz-9-dBi-Linear-Feed-Antenna-N-... The cantennas is really a waveguide. As such, it has no gain. What is being measured is the increase in SNR, due to a lowered noise floor. (Edit: to be completely fair, the antenna raises the signal and noise level.) This one has increased gain: http://people.wallawalla.edu/%7ERob.Frohne/Airport/Primestar/Primestar.html http://people.wallawalla.edu/%7ERob.Frohne/Airport/Primestar...