Tait TP9400 Series P25 User Manual

Glossary 159
15 Glossary
A
APCO The Association of Public Safety
Communications Officials.
The APCO Project 25 standards
committee (
http://www.apcointl.org/)
defined a digital radio standard. The
standard is often referred to as ‘APCO’
or ‘P25’.
C
channel In a conventional system, a channel is a
pair of frequencies used to transmit and
receive radio signals.
In a P25 trunking system, a channel is a
group of radio users.
control
channel
In a P25 trunking system, the control
channel is used by the trunking site to let
the radio units in the site’s coverage
area know when they can transmit their
call information.
conventional
operation
In conventional operation, the radio is
tuned to a programmed channel, and
communicates with other radios either
on that channel, or through a repeater
system.

Tait TP9400 Series P25 Specifications

General

P25 Phase	Phase 1 and Phase 2
Frequency Bands	VHF: 136-174 MHz, UHF: 380-520 MHz, 700/800 MHz: 764-870 MHz
Operating Temperature	-30°C to +60°C (-22°F to +140°F)
Operating Voltage	7.4V DC (Nominal)
MIL-STD	MIL-STD-810 C/D/E/F/G
Battery Life	Up to 12 hours (depending on usage)