HC Deb 09 February 2004 vol 417 c1440W
Mr. Gibb

To 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).