Information and specifications page for the SD-174ELOptions and Accessories: Please scroll down to view related items.

SD-174EL UHF 450-490 MHz

The Maxon SD-170EL Series of radios are durable, reliable and designed to meet the needs for a variety of wireless applications. Include the optional FFSK or GMSK modem boards to add even more diversity to this cost effective radio. The modules incorporate the popular mechanical footprint, DE-15 female connector and BNC antenna connection.

The modules incorporate the most requested mechanical footprint and BNC antenna connection. Adjustable transmit power settings from one to five watts provides the power needed on any job and the tri-color LED indicator gives instant on-sight status of the radios operation. Combine that with low current drain and fast transmitter/receiver attack times for operation in the harshest of system demands. The die cast aluminum cabinet/lid provides resistance to RF interference; and gives exceptional environmental durability in the most extreme conditions.

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-174EL

Features:

  • SD-170E Series User Manual
  • Synthesized Frequency Tuning
  • 1 or 5 Watts RF Output
  • 142-174 MHz VHF  SD-171EL
    450-490 MHz UHF  SD-174EL
    (Current Model listed on this page)
  • 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-15 Female Connector
  • 12.5/25 kHz Channel Spacing
  • Carrier Detect
  • Busy Channel Lockout
  • BNC Female Antenna Connector
  • Modem Options* (GMSK/FFSK)
    Internal Mounting for Optional Modem Boards
    *ACC-513E GMSK 9600 Baud
    *ACC-514E FFSK 4800 Baud
  • 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-171EL Maxon UHF SD-174EL
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-171EL Maxon UHF SD-174EL
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-171EL Maxon UHF SD-174EL
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-174EL - UHF 450-490 MHz Data Telemetry Radio CTCSS/DCS DE-15 & Modem(option)

  • $194.00
  • $175.00


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

Available Options


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