The Maxon SD-125E 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:
- AC and/or DC audio coupling for versatile signal processing.
- Prevents excessive transmission to protect system integrity.
- Maxon SD-125E Series operates within the 148-174 MHz frequency band.
- It supports 16 dip switch-selectable channels.
- An adjustable transmit power output of 5W or 1W for efficiency.
- The channel bandwidth is selectable between 12.5 kHz and 25 kHz.
- With modulation support, it enables reliable data communication at baud rates from 1200 to 9600.
- The squelch system includes CTCSS, DCS, two-tone squelch, and RSSI-based squelch for interference management.
- The device features a DE-9 Male RS-232 connector for data integration and a BNC antenna interface for easy connection.
- It supports GPS data handling, allowing control of internal GPS receivers.
- LED indicators provide real-time status updates.
- The die-cast aluminium housing ensures RF shielding and durability for harsh environments.
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: -57 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 ¼V (12.5 kHz), 0.28 ¼V (25 kHz)
- Selectivity: >60 dB (12.5 kHz), >70 dB (25 kHz)
- Intermodulation: >65 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:
- 1x Maxon SD-125E-U1 Data Radio
Documents:
Maxon SD-125E Series - Brochure
