User Manual

Installation and Operator Handbook Introduction
AMX–MA–00651 Issue 0.02 (USA)
6
A description of the equipment is given in Chapter 2.
1.2.2 Configuration Options
The DRB-25 may be configured as a Conventional (i.e. non-trunked) single or dual-channel radio base
station. The configuration options are summarized in Tables 1-1 to 1-3
Table 1-1 DRB-25 Operational Configurations
Mode Of Use Description
Single-channel
Repeater
The DRB-25 is configured with a single Transceiver, PA and Power Supply. If a
mobile radio makes a call on the Transceiver’s assigned frequency, the signal is
repeated using the same format (analog or digital) used by the mobile.
Dual-channel
Repeater
The DRB-25 is fitted with two Transceivers, PAs and Power Supply Modules. If
a signal is received on the assigned frequencies of either of the Transceivers the
signal is repeated in the same format in which it was received. Both
Transceivers operate independently and two signals may be repeated
simultaneously although not on the same frequency.
Scanning Repeater The DRB-25 is configured as either a single or dual channel unit. Each
transceiver is programmed with up to 8 channels which can be any mix of
frequency and operating mode (analog/digital). The transceiver scans through
the list of programmed channels until a valid signal is detected from a mobile
when the signal is repeated using the same format (analog or digital) used by the
mobile.
Crossbanding
Repeater
The DRB-25 is fitted with two Transceivers and PA Modules which have
operating frequencies in different bands. When a Transceiver receives a mobile
call on its assigned frequency it repeats it using the same format, and passes the
audio to the other Transceiver. The second Transceiver transmits the call on its
assigned frequency in the user-programmed mode (analog FM or APCO Project
25).
Crossmoding
Repeater
The DRB-25 is fitted with two Transceiver Modules which have operating
frequencies in the same band. When a Transceiver receives a mobile call on its
frequency it repeats it using the same format, and passes the audio to the other
Transceiver. The second Transceiver transmits the call on its frequency in the
user-programmed mode (analog FM or APCO Project 25).
Crossbanding and
Crossmoding
Repeater
The DRB-25 is fitted with two Transceiver Modules which have operating
frequencies in different bands. When a Transceiver receives a signal on its
assigned frequency it repeats it using the same format, and passes the audio to
the other Transceiver. The second Transceiver operating in a different band to
the first transmits the call on its assigned frequency in the user-programmed
mode (analog FM or APCO Project 25).