Back in 2002–2004 when DSL wasn't a commodity, a local ISP offered WLAN access. We lived on a ridge and had a clean line of sight – some 2.6 km – to one of the

Back in 2002–2004 when DSL wasn't a commodity, a local ISP offered WLAN access. We lived on a ridge and had a clean line of sight – some 2.6 km – to one of the base stations so we set up a spare satellite dish with a peanut can feed and were happy customers thereafter. In the dry winter months the we had some 22 dB of signal-to-noise ratio and during the summer months it fell to 15 ish dB. The link became unusable at around 11 decibels of SNR, which we hit during heavy rain and fog. Just looking at the link quality would tell you as much as peeking out of the window.