Logitech(R) Wireless Mouse+Keyboard Signal

From Signal Identification Wiki
Jump to: navigation, search

Logitech(R) Wireless Mouse+Keyboard Signal
LOGITECH MOUSE-KBD COMBO ISM-BAND.jpg
Frequencies "GHz" is not declared as a valid unit of measurement for this property.
Frequency Range 0 Hz - 0 Hz
Mode RAW
Modulation PPM,GFSK
ACF
Emission Designator
Bandwidth 500 kHz
Location Worldwide
Short Description This signal comes from Logitech(R) Brand wireless mouse and keyboard combo unit.
I/Q Raw Recording
Audio Sample

The keyboard contains two radios, one sends the mouse+kbd signal to the USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) dongle, the other listens to the mouse's transmitter and multiplexes it into the signal sent to the USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) Dongle Receiver, that is the signal in the image. You can't see the much weaker mouse signal, but it is there between the pulses of the main radio. The keyboards main radio sends PPMPulse Position Modulation, the mouse, for some reason, uses GFSKGaussian Frequency-Shift Keying.