§ Mr. GibbTo ask the Secretary of State for the Home Department whether any applications for planning permission for Tetra masts have described the modulation characteristics as pulsed. [153016]
§ Ms Blears[holding answer 5 February 2004]: The Home Office is not directly involved in the mast planning process. Planning applications for the new police radio system, Airwave, are a matter for the network provider, Airwave mmO2.
The modulation scheme used by Tetra is known as Differential Quaternary Phase Shift Keying (DQPSK).