Way too hard to navigate to bother with.
RF Wikipedia with extra commercial sauciness ...
Advertising site, oh I think there's some stuff about electronics too.
electrical tables and conversions
Im sure I will find some pointless use for this...
Amazing resource for electronic references for formulae/conversions/refs, from A2D conversion calcs to ZigBee. What's ZigBee, you ask? (I didn't know either.) ZigBee is a low power wireless protocol somewhere between 802.11 and Blueberry, according to the site's entry. There are amazing resources on this site!
It's an ok site for Electrical Engineering. Although they should probably "streamline" some stuff so it would be a quicker reference.
Nice one stop site for loads of calcs