22 | About the Radio
Aprisa SR+ User Manual 1.11.1
Product Features
Functions
•
Point-to-Point (PTP) or Point-to-Multipoint (PMP) operation
•
Licensed frequency bands:
VHF 135
135-175 MHz
VHF 220
215-240 MHz
UHF 320
320-400 MHz
UHF 400
400-470 MHz
UHF 450
450-520 MHz
UHF 700
757-758 MHz and 787-788 MHz
UHF 896
896-902 MHz
UHF 928
928-960 MHz
•
Channel sizes
–
software selectable:
12.5 kHz
20 kHz
25 kHz
50 kHz
100 kHz
•
Adaptive Coding and Modulation (ACM): QPSK (High Gain) to 64 QAM
•
Half duplex or full duplex RF Point-To-Multipoint operation
•
Full duplex RF Point-to-point operation
•
Automatic Transmit Power Control (ATPC)
•
Ethernet data interface and RS-232 / RS-485 asynchronous multiple port options
•
Software selectable dual / single antenna port options (dual antenna port for external duplexers or
filters)
•
Data encryption and authentication using 128,192 and 256 bit AES and CCM security standards
•
Terminal server operation for transporting RS-232 / RS-485 traffic over IP or Ethernet and converting
IP packets to a local physical serial port
•
Mirrored Bits ® and SLIP support for RS-232
•
IEEE 802.1Q VLAN support with single and double VLAN tagged and add/remove VLAN manipulation
to adapt to the appropriate RTU / PLCs
•
QoS supports using IEEE 802.1p VLAN priority bits to prioritize and handle the VLAN / traffic types
•
QoS per port (Ethernet, serial, management)
•
L2 / L3 / L4 filtering for security and avoiding narrow band radio network overload
•
L3 Gateway Router mode with standard static IP route for simple routing network integration
•
L3 Router mode with per Ethernet interface IP address and subnet
•
L2 Bridge mode with VLAN aware for standard Industrial LAN integration
•
Ethernet header and IP/TCP / UDP ROHC header compression to increase the narrow band radio
capacity
•
Ethernet and serial payload compression to increase the narrow band radio capacity
•
Pseudo peer to peer communication between remote radios through base-repeater or repeater
stations
•
SuperVisor web management support for element and sub-network (base-repeater-remotes)
management
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