Information and specifications page for the SD-125EL U1 Options and Accessories: Please scroll down to view related items.Product or Model has been replaced/updated

SD-174 450-490 MHz  5/1 Watts

The Maxon SD-170E Series RF Data Link Telemetry Radio delivers reliable 2-way communication & remote control for a variety of application needs. Available as VHF (SD-171) or UHF (SD-174) with 1 or 5 Watts programmable output and 16 channels. The SD-170 Series provides reliable data or voice communication at all times. Crystal clear audio quality makes the SD-170 Series an ideal radio for golf course and emergency call boxes. When paired with the optional GMSK or FFSK modem board, the SD-170 Series transmits and receives data for wireless security systems, or it can be used in conjunction with police mobile data terminals for license tag checks. The optional GPS receiver turns the RF data radio into an Automatic Vehicle Location system for tracking fleet movement and communicating data directly to a computer.

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.

Product or Model has been replaced/updated

Features:

  • Synthesized Frequency Tuning
  • 1 or 5 Watts RF Output
  • 148-174 MHz VHF - SD-171
    450-490 MHz UHF - SD-174
    (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 Tone Signalling
  • 2-Tone Decode
  • LED Status Indicator
  • DB-15 Female Connector
  • 12.5/25 kHz Channel Spacing
  • Carrier Detect
  • Time-out-timer / Busy Ch Lockout
  • Marked Idle / TX Delay
  • Programmable Wide/Narrow Ban
  • BNC Female Antenna Connector
  • Courtesy Beep
  • Complies with NTIA Specifications
  • Die-Cast Aluminum Housing
  • TX Time Out Timer
  • PC Programming via Software and Cable (optional)


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-171 Maxon UHF SD-174
Frequency Range 148-174 MHz 450-490 MHz
FCC ID Number pending pending
FCC Parts Parts  22, 74, 90.210
Channels 1 to16 dip switch selectable or external serial command
Channel Spacing 12.5 / 15 / 25 / 30 KHz 12.5 / 25 KHz
Channel Stepping 5.0 / 6.25 / 7.5 KHz 5.0 / 6.25 KHz
Channel Spread 26 MHz 40 MHz
Frequency Stability ±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,  13V nominal
Attack Time RX to TX - 20 ms    /     TX to RX - 20 ms (no power saving)
PLL Lock Time 10 ms
Squelch Attack Time RF Level @ Threshold - 40 ms  /  RF Level @ Threshold +20dB - 30 ms
Squelch Decay 5 ms min / 20 ms max
Baud Rate GMSK Up to 9600
Baud Rate FFSK Up to 4800
Dimensions [HWD] 4-5/16" x 2-5/16" x 1-1/4" [125 x 58 x 32 mm]
Weight 8.9 oz [253 gm]
Materials Die-cast Aluminum
IC Certification Number pending pending
 
ANSI/TIA/EIA-603 Receiver Specifications
Parameter: Maxon VHF SD-171 Maxon UHF SD-174
Frequency Stability ±2.5 PPM
Sensitivity (12dB SINAD) 0.25 uV VHF 0.25 uV UHF
Sensitivity (20dB Quieting) < 0.5 uv @ center channel
Selectivity 70dB (25 KHz) / 65dB (12.5 KHz)
Spurious Rejection

-65dB

Intermodulation

-70dB

Audio Output 250 mV @ 8 Ohms (filtered)   250 mV RMS @ 10k Ohms (unfiltered)
Audio Distortion < 5% @ 1 KHz
Hum & Noise -40 dB
Input Impedance 50 ohms
 
ANSI/TIA/EIA-603 Transmitter Specifications
Parameter: Maxon VHF SD-171 Maxon UHF SD-174
RF Power Output. 1 or 5 Watts programmable
Frequency Stability ±2.5 PPM
Modulation 11K0F3E / 16K0F3E  / 19K6F3E
Spurious & Harmonics -60dBc
FM Hum & Noise -40dB
Audio Distortion <2% @ rated modulation
Modulation Limiting 2.5 KHz max. [12.5 KHz] ,  5 KHz max. [25 KHz]
Unfiltered Modulation 100 mV RMS (input)  7 mV RMS (filtered mod input)


Data Connector Pin Configuration
ORIGINAL VERSION
Data Port allowing communications with support devices on the SD-174 and SD-171

  1. Data modulation input - Analog input (Nominal modulated level Input - 100 mV RMS)
  2. Data unfiltered output - Analog output (Nominal demodulation output level - 250 mV RMS @10Kµ)
  3. PTT- M level (or RS-232 level with modem option)
  4. Ground (E Version main power: +12V Nominal / D-Shell or case is Ground)
  5. Serial data output for radio control or program - TTL level
  6. Busy detect - TTL level (or RS-232 level with modem option)
  7. Microphone filtered audio input - Analog Input  (Nominal modulated level input - 7 mV RMS)
  8. Serial data input for radio control or program- TTL level
  9. Speaker filtered output - Analog output (Nominal demodulation output level - l V RMS @ 8µ)
  10. Serial data input for option modem - RS-232 level
  11. Serial data busy for option modem - RS-232 level
  12. Serial data busy for option modem - RS-232 level
  13. GPS data input- TTL level (NMEA 0183 formal)
  14. DGPS data input - TTL level (NMEA 0183 format)
  15. GPS data output - TTL level (NMEA 0183 formal)


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-174 - UHF 450-490 MHz DB-15 Pin Female

  • $0.00


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Tags: SD-174, UHF, data, radio, sd-174, de-15, db-15, maxon, sd174, Maxon SD-174U