January 1st, 2008
You can extend the range even without any soldering required. I simply wrapped a wire (a long phone cord I had at my dispense) a few times around my logitech RF receiver, and the rest of wire (a few more feet) I taped along a wall up to the ceiling. This simple hack improved the range of my wireless mouse and keyboard by maybe 200%, and now I can control my computer from anywhere in the apartment. getting the number of wire loops required and the length of the cable is a bit of a trial and error, but it’s so easy you might want to give it a try.
October 6th, 2008
Shahar is correct, but I’ve found it even easier than that. If you are using a wireless keyboard with the usual range of from 2 to 6 feet, simply take it to the room you want to use it in (mine is 35 feet from the transmitter). Take a wire like a speaker wire or any LOW voltage (for safety) wire and run it underneath the keyboard with this configuration: lengthwise under the keyboard and out the other side for 3 or 4 inches, then loop back under the keyboard again keeping the wires from crossing. But most importantly, the wire must be energized. So if it is a speaker wire, you should have that speaker turned on. I have found this method to be reliable and easy to set up.