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SD171EL/SD174EL Synthesized RF Data Radios
SD171EX/SD174EX Synthesized RF Data Radios

VHF 142-174 MHz, UHF 450-490 MHz 
5/1  Watt Power
16 Channels

      SD-170EL                           SD-170EX

In combination with hand-held computers/bar code readers and SCADA applications, Maxon module radios meet your RF needs. Solid state switching and direct FM modulation provides high-speed data capability. The SD-125 Series is optimized for SCADA, computer polling and telemetry applications.  Applications include "Call Boxes" irrigation systems, electronic signs and others.

SD-170EL Pinout

SD-170EX Pinout

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  • 5/1 Watts RF Tx Power
  • Synthesized VHF/UHF
  • Ideal for Telemetry and SCADA
  • 16 Channels Dip Switch Select
  • Programmable 12.5/25 kHz by channel
  • CTCSS/DCS Encode/Decode
  • LED Status Indicator
  • TX Time-out-Timer
  • Busy Channel Lockout
  • 2-Tone Decode
  • Carrier Detect
  • Cast Aluminum Housing with Mounting Holes
  • POCSAG Protocol (0ptional (EX Series)
  • Squelch - Software aligned (EX Series)
  • DE-15 Pin female connector (EL Series)
  • DE-9 Pin Male connector (EX Series)
  • Modem Options (GMSK/FFSK) (EL Series)
  • 3 year warranty


  • Water/Waste Treatment Plants
  • Oil and Gas Field SCADA
  • Security/Alarm System
  • Gate Systems
  • Commercial Sign Control
  • Automatic Vehicle Location
  • Murphy / Kill Switches
  • Weather Monitoring
  • Irrigation Systems
  • Emergency Call Boxes
  • Low Power Repeaters


  Model Description Cost List
SD-171EL VHF, 142-174 MHz,  Synthesized RF Data Radio, 15-pin, w/LED $220 275
SD-174EL UHF, 450-490 MHz, Synthesized  RF Data Radio, 15-pin, w/LED 220 275
SD-171EX VHF, 142-174 MHz, Synthesized  RF Data Radio, 9-pin 220 275
SD-174EX UHF, 450-490 MHz,  Synthesized RF Data Radio, 9-pin 220 275
TB-150BN VHF 6" Antenna w/BNC 27 30
TB-450BN UHF 6" Antenna w/BNC (450-470 MHz) 27 30
ACC-513E GMSK 9600 Baud Modem for EL Model 80 89
ACC-514E FFSK 4800 Baud Modem for EL Model 77 85
ACC-516E Extender Board for Servicing SD-170EX 23 25
INST Installation of Signal Modules (optional) 75 83
ACC-2016E PC Programming Cable - EL Model 50 50
ACC-916E PC Programming Software (12.5/25 kHz) EL Model 35 35
ACC-916EN PC Programming Software (12.5 kHz only) EL Model 35 35
ACC-2016EX PC Programming Cable for EX Model 50 50
ACC-916EX PC Programming Software for EX Model (12.5/25 kHz) 35 35
ACC-916EXN PC Programming Software for EX Model (12.5 kHz Only) 35 35

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