I built an HTPC so I invested in a Bluetooth keyboard and trackpad as my couch potato remote control.
My dual band router is located in my home theater setup to provide wired access to many all of my theater peripherals (as opposed to using a slower wireless connection).
The trackpad experiences some lagging, but the keyboard is unusable. Letters take anywhere from 1-30 seconds to appear and some buttons are repeated indefinitely as the bluetooth connection is lost.
I'm almost sure that this is a 2.4GHz band interference problem; my question is how to mitigate the interference?
Which is more likely to cause interference that renders my Bluetooth keyboard unusable: the router or a wireless card in the computer?
I've opened up the 5GHz band on my router to serve my laptop, but unfortunately there isn't a way to disable the 2.4GHz band (and my iPhone 4S is relegated to the 2.4GHz band anyways).
Needless to say a wired option for either the keyboard or mouse are out of the question for an HTPC.
Access Point: Time Capsule - 2.4ghz band operating on channel 11, 5.0ghz band enabled (automatic channel)