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* Account for limited number of channels- medical staff and event control will need their own. Medical people will usually expect radios to be provided for them by the events team. | * Account for limited number of channels- medical staff and event control will need their own. Medical people will usually expect radios to be provided for them by the events team. | ||
* Reliability is king. Rented off-the-shelf well-tested solution beats hacked together thing. Security also a consideration- TRBOnet and friends offer basic encryption which should be sufficient. In the case of things like event emergencies (fires and the like), you don't want that going out to the 5% of the attendees with radio scanners. Codewords for fires and the like are also used at most events to prevent the public panicking ("Mr. Charles is in tent X", for instance, goes down a whole lot better with the crowd who just overheard the radio than "Tent X is on fire"). Triggering large movements of people is bad. | * Reliability is king. Rented off-the-shelf well-tested solution beats hacked together thing. Security also a consideration- TRBOnet and friends offer basic encryption which should be sufficient. In the case of things like event emergencies (fires and the like), you don't want that going out to the 5% of the attendees with radio scanners. Codewords for fires and the like are also used at most events to prevent the public panicking ("Mr. Charles is in tent X", for instance, goes down a whole lot better with the crowd who just overheard the radio than "Tent X is on fire"). Triggering large movements of people is bad. | ||
* I've got a friend who runs these systems at large events (golf cups, wimbledon & the like). These systems can also offer logging of call connections and content, and identification of handsets in case of abuse. We could get a quote from his employer, www.radio-links.co.uk. They offer the Motorola system and a competitor's that can increase the number of channels per repeater. [[User:Artag|Artag]] | * I've got a friend who runs these systems at large events (golf cups, wimbledon & the like). These systems can also offer logging of call connections and content, and identification of handsets in case of abuse. We could get a quote from his employer, www.radio-links.co.uk. They offer the Motorola system and a competitor's (Hytera) that can increase the number of channels per repeater. [[User:Artag|Artag]] | ||
==== GSM ==== | ==== GSM ==== | ||
Licence needed in the UK. CCC had a test licence. | Licence needed in the UK. CCC had a test licence. | ||