Heavy-Duty UHF Radio
• Configurable output power of up to 35 Watts.
• Wide and tunable 70 MHz (403-473 MHz) operating range.
• User-selectable channel spacing (12.5, 20 or 25 kHz).
• Compatible with existing Topcon and 3rd party radio products such as Satel, Trimble, and Pacific Crest rover
radios.
• IP67 rating to withstand harsh environments.
• Automatic prevention of overheating.
• Multi-function LCD user interface.
Heavy-duty and Reliable
The SRL-35 is an all-weather UHF base radio with configurable high power output (up to 35 W1) and a full 70 MHz tuning range. Designed for easy operation in demanding field conditions, the reinforced casing and connectors are fully waterproof and secure against dust (IP67). In addition to flexible output power and a wide tuning range, the SRL-35’s channel spacing can set to 12.5, 20 or 25 kHz with complementary protocol support to satisfy high-efficiency narrowbanding2 requirements. The unit’s weather-proof LCD display clearly indicates the current operating status, and the integrated keypad allows direct configuration of the current operating channel, power level, and radio protocols. Interoperability is provided for several 3rd party radios protocols including Satel, PDL, and TrimTalk3 formats.
Dependable and Powerful
The SRL-35 uses a Forward Error Correction (FEC) approach which ensures dependable communication links and a minimum of data loss. At full power, communication distances of up to 80km can be achieved in good conditions. The SRL-35 can also function as a repeater using a second SRL-35 and doubling your operating range.
SRL-35 Specification
Transceiver | |
Frequency Range | 403 – 473 MHz |
Tuning Range | 70 MHz |
Channel Spacing | 12.5 / 20 / 25 kHz (SW selectable) |
Frequency Error Tolerance | < 1kHz |
Type of Emission | F1D |
Communication Mode | Half-Duplex |
Transmitter | |
Carrier Power | 10, 20, 25, or 35W / 50 ohm (default |
5, 10, 20 or 25W / 50 ohm (option1) | |
Carrier Power Stability | +2 dB / -3 dB |
TX Duty Cycle 4 | 100% (22°C / 35°C) 40% |
35W 20 min / 13 min No limit | |
10W No limit / 50 min No limit | |
Receiver | |
Sensitivity | < -114 dBm (BER < 10 E-3)5 |
Co-channel Rejection | > -12 dB |
Adjacent Channel Selectivity | > 47 dB @12.5 kHz / > 52 dB @ 25 kHz |
Intermodulation Attenuation | > 60 dB |
Spurious Radiation | < 2 nW |
Data Modem | |
Interface | RS-232 |
Interface Connector | IP67, 8-pin ODU |
Data Speed of RS Interface | 300 – 38400 bps |
Data Speed of Radio Interface | 19200 bps (25 kHz) / 9600 bps (12.5 / 20 kHz) |
Data Format | Asynchronous RS-232 |
Radio Protocols3 | Satel / PDL / TrimTalk |
Power and Electrical | |
Power Consumption (average) | 1.8W typical (Receive) |
120W typical (Transmit 35W output power) | |
100W typical (Transmit 25W output power) | |
0.4W typical (Sleep State) | |
Operating Voltage6 | +9 to +16 VDC / 4-pin ODU MINI-Snap Size 1 (feeding) |
Physical | |
Dimensions | 189 x 138 x 71mm (with connectors) (h x w x d) |
Weight | 1.42kg |
Antenna Connector | TNC, 50 ohm, female |
Enclosure | Aluminium |
Environmental | |
Temperature Range | Operating: -25°C to +55°C, -40°C to +75°C (absolute min / max) |
Storage: -40°C to +85°C | |
Waterproof / Dustproof Rating | IP67 (NEMA 6) |
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