Codan Radio P25 Training Guide - Manual (Page 31)

P25 RADIO SYSTEMS | TRAINING GUIDE
Chapter 3: P25 Technical Information Page 23
CHAPTER 3: P25 TECHNICAL INFORMATION
ANALOG TO P25 TRANSITION
P25 equipment can be used in any confi guration that is typically found in existing analog systems.
Base Stations, remote bases, repeaters, voting, and simulcast systems are all confi gurations of P25
conventional systems. Transmitter RF power output levels and receiver sensitivity levels of P25
equipment are very similar to those of conventional analog equipment. P25 equipment can therefore
be used in a “one-for-one replacement” scenario of analog equipment. This section will discuss some
of the issues surrounding the transition from an analog radio system to a P25 digital radio system as
well as supply general knowledge about P25 radio systems.
P25 FREQUENCY BANDS
The frequency bands in which P25 radio systems are available are VHF (136 – 174 MHz) and UHF
(403 – 512 MHz, 806 – 870 MHz). In addition, P25, Phase 1 technology has been adopted by the FCC
as the digital interoperability standard for the 700 MHz (746 – 806 MHz) digital public safety band.
HEXADECIMAL AND BINARY NUMBERING
The TIA-102 suite of documents defi nes numerical information in either hexadecimal format or binary
format. The hexadecimal numbers are preceded by a $ symbol and the binary numbers are preceded
by a % symbol.