Keyboard and mouse problem: Wireless interference when multiple wireless keyboards and mice are used in the same room
All wireless devices are subject to electrical or radio wireless interference, so the method of transmission is very important. The main transmission technologies are IR (Infra-Red), RF (Radio Frequency) and Bluetooth. IR based systems are generally older and require line-of-sight between the devices and the base station, much like a television remote control.
The most common wireless technology you can purchase is an RF-based system. The general range of RF-based systems can go from 3 to 100 feet. Logitech and Microsoft claim a range of up to 6 feet for their products. Gyration is a relative newcomer to this market. Gyration uses several unique technologies in its wireless keyboards and mice. The RF frequency it uses is much higher than that used by both Logitech and Microsoft, so its products can claim ranges of up to 30 feet. Indeed, Gyration’s line of professional devices claim to have a range of up to 100 feet.
If you use multiple wireless keyboards and mice are used in the same room, they might interfere with each other, causing confusion and possible loss of data, so you must buy devices that don’t interfere with each other.
Bluetooth wireless devices use pairing technology that pair the devices to a particular computer in order not to be affected by other wireless devices using the same 2.4GHz radio band.
Microsoft’s 2.4GHz wireless mice and keyboards are designed to function in an office environment in which many such devices are being used. Read the following PDF document on this subject:
Logitech Unifying Receiver –
“The Logitech Unifying receiver is a small-size USB wireless receiver which permits up to 6 Logitech devices (such as mice and keyboards) to be linked to the same computer using 2.4 GHz band radio communication.” –
It can be purchased from Amazon in the US and the UK for around £10/$10.