E F Johnson Company 2422607 Benutzerhandbuch
3800 Information
1 -2 3800 Digital Repeater Operating Manual
October 2009
The radio
component provides a transmitter and receiver with software programmable frequency and power
selection. Transmitter and receiver signals are encoded and sampled by dual Digital Signal Processors
DSP).
selection. Transmitter and receiver signals are encoded and sampled by dual Digital Signal Processors
DSP).
Channel controllers in each repeater manage the control and traffic channels for frequency assignments
and transmitter power level. The local site controller is integrated into one of the repeaters. The Trunked
IP25 System supports the ability to have backup site controllers, but only one site controller is required
per site.
and transmitter power level. The local site controller is integrated into one of the repeaters. The Trunked
IP25 System supports the ability to have backup site controllers, but only one site controller is required
per site.
Multiple repeaters may be used per site to accommodate multiple frequencies, traffic level, and provide
radio channel backup. One repeater is required for a control channel and one or more repeaters for traffic
channels.
radio channel backup. One repeater is required for a control channel and one or more repeaters for traffic
channels.
A built-in ethernet interface lets the repeater communicate over the Trunked IP25 System IP network to
other system components.
other system components.
1.1.1 Models & Features
The 3800 Series Repeater consists of various models and features. Please refer to the 3800 Digital
Repeater Service Manual for descriptions of the different models, identification and part number
information.
Repeater Service Manual for descriptions of the different models, identification and part number
information.