You can always try the Capella plans from the link below. I built it and it works fairly well. I find the friction required to get a proper static/stable lock on anything insufficient. Could be my implementation of the plans. I'm modifying the concept to use a couple of worm gears to stabilize everything. I've purchased some worm gears for garage door openers with 0.5" shafts. They are sturdy enough to keep a lock on an object. Probably not accurate enough to track an object over an extended period of time but, this is just for fun right?

have a look see: http://solar.physics.montana.edu/larson/Capella/index.html

Not sure where you are experiencing your problem: at work or at home?In my case, my son's XBOX USB WiFI dongle was periodically trashing my home WiFi. Finally gave up, ran a wire and poof WiFi problem is now gone. Any consoles on your Wifi network active between 8and 10?

Oh, and they'd never use it to track someone's movements based on their unique GPS device. Nah, never happen!