Tait TP9400 User Manual - 30  Getting Started

30  Getting started

About P25 digital radios

Your P25 digital radio can be programmed for P25 

conventional or P25 trunked operation. Analog 

conventional operation is also available, with dual-mode 

channels able to receive both digital and analog calls.

You may notice differences between digital and analog 

calls in terms of:

■

static noise in low signal areas, and

■

radio coverage in marginal reception areas. 

Lack of static noise

On digital networks there is no static noise, even in low 

signal areas. This lack of static is because your digital 

radio removes the ‘noise’ from the call, so that you hear 

only clear voice.

Coverage

With digital networks, a call remains clear and then 

drops off quickly at the border of a coverage area. The 

reason for this is that a digital call is either received or it 

isn't. With analog networks, the background noise in a 

call gets progressively worse when you are in fringe 

areas or even slightly outside normal coverage areas. 

P25 phase 2 digital operation

TM9400 radios are software upgradeable to P25 

phase 2 operation. Contact your radio provider for more 

information on software releases and P25 phase 2 

availability for your radio.