The Maxon SD-174EX data/telemetry radios are designed to meet the needs for a variety of wireless applications. Programmable sub-audio squelch system (CTCSS & DCS) and two-tone squelch system are newly added to the signal level detect squelch system (RSSI). GPS Data handling is provided to interface and control internal GPS receiver. The SD-170EX Series incorporates the most often requested mechanical footprint, DE9 male connector, and BNC antenna connection. The LED provides you instant status of the radio.

Product Features:

• The Maxon SD-174EX Series operates within the 148-174 MHz frequency band.
• It supports 16 dip switch-selectable channels and features an adjustable transmit power output of 5W or 1W.
• With selectable channel bandwidth options of 12.5 kHz and 25 kHz, it offers flexibility in signal transmission.
• Supporting GMSK, FFSK, and FSK modulation.
• This device enables efficient data communication across a baud rate range of 1200 to 9600.
• It incorporates a comprehensive squelch system, including Carrier Detect, CTCSS & DCS Encode/Decode, and Two-Tone Squelch.
• The DE-9 Male RS-232 connector facilitates data integration, while the BNC antenna interface ensures easy antenna connection.
• This device also supports GPS data handling, allowing it to interface with and control internal GPS receivers.
• LED status indicators provide real-time operational updates.
• Its die-cast aluminium housing offers superior RF shielding and environmental resistance.

Transmitter:

• Output Power: VHF/UHF 5/1 Watt
• FM Hum & Noise: >40 dB (12.5 kHz), >40 dB (25 kHz)
• Modulation Sensitivity: 100 mV RMS @ 60% peak dev
• Spurious Emissions: -36 dBm
• Frequency Deviation: Peak ± 2.5, min. ± 1.9 kHz (12.5 kHz), Peak ± 5.0, min. ± 3.8 kHz (25 kHz)
• Adjacent Channel Power: 70 dBc (25 kHz), 60 dBc (12.5 kHz)
• Audio Response: Within +1/-3 dB of 6 dB octave pre-emphasis characteristics from 300~30000 Hz

Receiver:

• Sensitivity: 0.30 μV (12.5 kHz), 0.28 μV (25 kHz)
• Selectivity: >65 dB (12.5 kHz), >70 dB (25 kHz)
• Intermodulation: >70 dB
• Spurious Emissions: -57 dBm (9 kHz - 1 GHz), -47 dBm (1 GHz - 4 GHz)
• Rx Hum and Noise: 40 dB (12.5 kHz), 40 dB (25 kHz)
• Receiver Response Time: 16 ms
• Squelch Decay Time: 5 ms Min., 20 ms Max.
• Audio Output Power: 0.5 Watts

Application Areas:

• Water/waste treatment plants
• Oil & Gas field SCADA
• Security/Alarm systems
• Gate ID Tag systems
• Remote controls
• Commercial Sign Control
• Automatic Vehicle Location
• Kill Switches
• Weather monitoring
• Irrigation systems
• Emergency Call boxes
• Low power repeaters

In the Box:

• 1 x Maxon SD-174EX-U Data Radio.

Documents:

Maxon SD-170EX Series - Brochure Maxon SD-170EX Data Radio - User Manual Maxon Programming Service Update