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en.wikipedia.org/wiki/Trunked_radio_system

A trunked radio system is two-way radio system that uses a control channel to automatically ... Many unrelated conversations can occur on a channel, making use of the ... In essence, a trunked radio system is a packet switching computer network. ... on a radio scanner it is very common to be able to assign talkgroups into ...

www.digikey.sg/en/maker/projects/030ebd8790e64579b8d8a98dc9ab6383

Software Defined Radio Receiver USB Stick - If you've ever been curious about .... SDR can turn your computer into a weather-band receiver, a police/fire report  ...

www.theregister.co.uk/2015/01/08/airwave_tetra_switch_off_gov_services_onmishambles

Jan 8, 2015 ... In less than 18 months' time the police radio network will be switched off. ... and the looming omnishambles is turning into a bonanza for Arqiva, ...

itstillworks.com/program-digital-police-scanner-5091397.html

If you have a police scanner, you need to know how to program it so that you ... You can take the scanner anywhere and program in different frequencies for any area you ... ... Locate the battery compartment on the scanner first and make sure that you ... She studied accounting, computers and writing before offering her tax,  ...

itstillworks.com/program-radio-shack-police-scanner-5017097.html

You can program the scanner to listen to specific channels, or scan through all ... a Radio Shack police scanner will allow you to listen to local police activity, ... Turn the squelch knob located by the volume control both ways until the ... computers and writing before offering her tax, computer and writing services to others.