GLB SNRDS Synthesized Netlink Radio Data System

Data Sheets:

SIMREX Corporation's GLB "Synthesized Netlink Radio Data System" is designed for point to point or point to multipoint networks to handle reliable high speed data up to 19,200 baud. "SNRDS" are also designed for Spectrum/Network efficiency to allow the maximum number of subscribers on the network. For reliability, the "SNRDS" power amplifiers have been designed for continuous duty cycles.  The SNRDS uses SIMREX's proprietary preselector technology to implement a narrow RF front end that has exceptional sensitivity and maximizes desensitization and intermodulation in hostile RF environments. 

Frequency Variation  
Frequency  108-174 218-399 400-512 806-960
Power @ 13.8 volts 1-5 Watts  1-5 Watts  1-5 Watts  1-5 Watts
Power Amp@ 13.8 volts  6-25 Watts  6-25 Watts  6-25 Watts 6-15 Watts (800) 6-10 Watts (900)
Frequency Stability   2.5ppm  2.5ppm  1.5ppm  1.5ppm

NOTE : Custom frequencies are available

Applications: SCADA (Oil & Gas, Utilities) Aeronautics Automatic Vehicle Location (AVL) DGPS Guidance Public Safety Mining Display Signs Surveying Many More

  Features of the SNRDS

  • Baud Rates: Over the air (1200 to 19,200 bps), serial (1200 to 38,400 bps)
  • TCP / IP compatible
  • Intrinsically Safe: Class 1, Div 2 (A, B, C, D)
  • Turnaround Time: Receive to Transmit @ 5 ms, Transmit to Receive @ 1 ms
  • B.E.R. Rate -113db @ 10-6 (9600 Baud), Receiver Sensitivity -119db @ 10-6 (9600 Baud)
  • Available Frequencies: 108-512 MHz, 806-960 MHz
  • Interfacing with TTL, RS232/422/485
  • Repeating (Store & Forward)
  • Asynchronous/Synchronous
  • Continuous Duty Cycle
  • Transparent Mode (Packetized, Continuous, Forward Error Correction)
  • 25 - 30 Watt Integrated Power Amplifier
  • Software or Manual Switch Multi-Channel Capability ( 8 channels)
  • Supports point-to-point and point-to-multipoint, repeater operation with user-configurable addressing 
  • Hot Standby
  • Ethernet Capable
  • Dust & Water Resistant
SYSTEM  RECEIVER
Frequency 108-512 MHz & 806-960 MHz Sensitivity -119 dBm 12dBm SINAD (EIA)
Storage Temperature -55°C to +85°C Spurious & Image Rejection > 70 dB
Operating Temperature  -40°C to +60°C Adjacent Channel Filter Rejection  > 70 dB
Warmup Time  None Intermodulation 65 dB, third order
Humidity 0-99% RH Non-Condensing    
SIze 5 Watt: 4.5W x 2.27H x 9.1D inches 25 Watt: 4.5W x 3.5H x 9.2D inches CONTROLLER
Weight  5 Watt: 2 lbs / 0.9 kg 25 Watt: 4 lbs / 1.8 kg Serial Ports Primary & Secondary, TTL, RS232, RS422, RS485
Current Drain Standby: 280 mA Low Consumption: 160 mA Transmit: 5W: <1.2A   25W: <8.0A Sleep Mode: 4.0 mA Data Rate 300 - 38,400 bps
Power Requirement  10 - 15 VDC  CPU Watchdog Timer  approximately 1 second
Data Connector  DB-25 Female (DCE) Transmit Limit Timer  approximately 15 seconds
RF Connector(s)  1 or 2, BNC, TNC, "N" Type Memory  32K Eprom, 32K Ram, 512 EEprom
Bit Error Rate  -113 dBm  @ 10-6  9600 Baud Backup Method  EEprom
Power Output 5 Watt: 100 mW - 5 Watts 25 Watt: >5 Watts - 25 Watts Computer Interface RS232 with optional RS422/485
LED's  8 Flow Control RTS, CTS or XON & XOFF
Mounting  Mounting Brackets, Rack Mountable Protocol  CSMA
Packaging Black, Anodized Aluminum, Dust, Water & Corrosion Resistant Optional Forward Error Correction
APPROVALS FCC Type Acceptance - Parts 22,90,94 DOC Type Acceptance-RSS - 199,121,122 TRANSMITTER
    Conducted Spurious Harmonics -65 dBc
RADIO Output Power 13.8 Volts @ 5 watts
Modulation FM TX Time Continuous
Step Spacing 5, 6.25, 12.5, 25 KHz Attack Time 1 millisecond
Antenna Impedance 50 Ohms Nominal Oprtional 6-25 Watts @ 108 - 512 MHz 6-15 Watts @ 806 - 870 MHz 6-10 Watts @ 870 - 960 MHz
Frequency Stability 108-399 MHz - 2.5ppm 400-960 MHz - 1.5ppm    
Turnaround Time RX to TX @ 5ms TX to RX @ 1ms MODEM
    Baud Rate 1200 bps to 19200 bps
    Modem Modulation Bell 202, FSK, GMSK
    CD Response 3 ms