Information and specifications page for the SD-171EXOptions and Accessories: Please scroll down to view related items.

SD-171EX VHF 142-174 MHz

The Maxon SD-170EX Series of radios are durable, reliable and designed to meet the needs for a variety of wireless applications in VHF or UHF frequencies..
 
 The modules incorporate the most requested mechanical footprint,
DE-9 male connector, and BNC antenna connection. Adjustable transmit power settings provides the power needed on any job and the tri-color LED indicator gives instant on-sight status of the radios operation. The die cast aluminum cabinet/lid provides resistance to RF interference and gives exceptional environmental durability in the most extreme conditions. The SD-170EX can also be configured with POCSAG for paging applications.
 
 Whether implementing a new system or installing into an existing system, the Maxon family of data telemetery radios have been the choice of OEM and end-users worldwide for over 25 years.

Maxon's 3 year warranty and FCC, European Conformity and Industry Canada Certification logos certifies that the electromagnetic interference, safety, manufacture and other quality parameters have been met by the Maxon SD-171EX

Features:

  • SD-170EX Series User Manual
  • Synthesized Frequency Tuning
  • 1 or 5 Watts RF Output
  • 142-174 MHz VHF  SD-171EX (Current Model listed on this page)
  • 450-490 MHz UHF  SD-174EX
  • Programmable up to 16 Channels
  • 16 Channels (Dip Switch Select)
    (internal dip switch)
  • Programmable Wide/Narrow Band
  • Operates from 9V to 18 VDC
  • CTCSS/DCS Encode/Decode
  • LED Status Indicator
  • DE-9/DB-9 Male Connector
  • 12.5/25 kHz Channel Spacing
  • Busy Channel Lockout
  • BNC Female Antenna Connector
  • Carrier Detect
  • 2-Tone Decode
  • Die-Cast Aluminum Housing
  • TX Time Out Timer
  • PC Programming via Software and Cable (optional)
  • Call for Assistance
  • Pay using PayPal: You do not need a PayPal account to order using PayPal. All Credit/Debit Cards accepted. no PayPal account needed


Applications:

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

General Specifications  
Parameter: Maxon VHF SD-171EX Maxon UHF SD-174EX
Frequency Range 142-174 MHz 450-490 MHz
Approvals RXUSD-171E RXUSD-174E
FCC Parts Parts  22, 74, 90, 210
Channels 1 to16 internal dip switch selectable
Channel Spacing 12.5 / 25 KHz
Channel Stepping

2.5, 5 & 6.25 KHz

Channel Spread 32 MHz 40 MHz
Frequency Stability

±5.0 ppm

±2.5 ppm

Operating Temperature

-22° to +140° F (-30° to + 60° C)

Storage Temperature

-40° to +176° F (-40° to + 80° C)

Input Voltage

9V - 18V DC,  12V nominal

LED Status

Green - Receive or Decode /  Red - Transmit / Yellow - Busy

Current Drain @12V 65 mA Rx / 1.0A Tx Low / 2.0A Tx Hi
Lock Time

<10ms

Operating Rating

35% @ Temp Range Listed

Dimensions [LWD]

4.6 x 2.4 x 1.4” (117x62x35 mm)

Weight

9.4 oz. (267 g.)

Materials

Die-cast Aluminum

IC Certification Number

153B-SD-171E

153B-SD-174E

 
Receiver Specifications
Parameter: Maxon VHF SD-171EX Maxon UHF SD-174EX
Frequency Stability < ±5 PPM < ±2.5 PPM
Sensitivity (12dB SINAD) .30μV (12.5 kHz), 0.28μV (25 kHz)
Selectivity 65dB (12.5 kHz), 70dB (25 kHz)
Response Time <16ms
Spurious Emissions -57dB (9kHz-1GHz),-47dB (1GHz-4GHz)
Intermodulation

-70dB

Audio Output

0.5 Watt

RX Hum/Noise

-40dB (12.5 kHz), -40dB (25 kHz)

Squelch Attack Time

<20/40 ms (RSSI/Analog)    <10/30ms (RSSI/Analog), ±20dB

Squelch Decay Time 5 ms Min., 20 ms Max
Spurious/Harmonic

65dB

Input Impedance 50 ohms
 
Transmitter Specifications
Parameter: Maxon VHF SD-171EX Maxon UHF SD-174EX
RF Power Output.

5/1 Watt Programmable

Frequency Deviation ±2.5, Min. ±1.9 kHz (12.5 kHz) / ±5.0, Min. ±3.8 kHz (25 kHz)
Modulation 11K0F3E / 16K0F3E
Spurious & Harmonics -36dBm
FM Hum & Noise

40dB (12.5 kHz), 40dB (25 kHz)

Adj. Channel Power 70dB (25 kHz), 60dB (12.5 kHz)
Audio Response +1, -3dB from 6dB per octave pre-emphasis and characteristic 300 ~ 3000 Hz
Modulation Sensitivity 100mV RMS (60% peak dev)


NOTE: Some features indicated by specifications listed are prohibited by FCC rule and are not available on models sold in the U.S. or its territories. Note: Features and specifications subject to change without notice.

Maxon SD-171EX - VHF 142-174 MHz Data Telemetry Radio w/DE-9 pin Male CTCSS/DCS

  • $194.00
  • $175.00


  • 10 or more $175.00
  • 20 or more $162.00

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Tags: SD-171EX, SD-174EX, Data, Radio, Telemetry, sd-170, sd171, sd174, maxon, db-9, de-9, db9, de9