LS-V500 Audio module, with advanced arithmetic fault-rectify system in software design, adopting double VCO structure and high stability TXCO, it has good stability and reliability. This module is usually used for industry control, water conservancy, electric, oil field management, wireless alarm so on. It can be customized to VHF or UHF frequency band. Moreover, we can extend its functions and ODM products for you according to your specific application.

1. Specifications:

• Operating Voltage: DC 12V/5V
• Carrier Frequency: VHF/UHF (144MHz, 230MHz, 400MHz and other)
• Interface: standard RS-232/RS-485/TTL Selectable
• Baud Rate: 1200/2400 Selectable
• Channel spacing: 25kHz/12.5KHz
• Channel steps: 5KHz
• Frequency stability: ±2.5ppm
• Modulation: FFSK;
• Impedance: 50Ω
• Transfer distance:3km(BER=10-3@9600bps);
• Temperature: -30℃~+70℃
• Size: 70x46x12mm(without antenna port)
• Weight:180g

2. Receiver:

• Receiving sensibility: ≤0.25μV (12dB SINAD)
• Signal-to-Noise: ≤-40dB
• Adjacent channel selectivity: ≥70dB
• Inter-modulation rejection: ≥65dB
• Clutter and images rejection: ≥70dB
• Receiving current: 50mA
• Audio Output power: 0.5W(8Ω,10％ distortion)
• Receiving distortion: ≤3％

3. Transmitter:

• RF power: 1W/500mW
• Transmitting current: 300mA
• Modulation: FFSK
• Audio distortion: ≤3%
• Frequency deviation: ±5.0kHz
• Adjacent channel power: ≥70dB
• Transmitter start up time: ≤50m
• Surplus Frequency Modulation: ≤-40dB
• Modulation distortion: ≤3％
• Modulation sensibility: 5mV
• Transmission distance: 3Km
• Volts D.C.: 12V/5V DC

4. Features

• Design for the special use of wireless voice transmission in industrial automation
• High stability, good reliability and low power consumption
• Standard UART port available : RS-232/RS-485/TTL
• Easy to install, flexible networking configuration, also suitable for multiple-point to point communication in decentralization and complex geography environment.
• Metal shell, good shielding performance, flexible frequency band available.
• Provide programming software or AT command for parameter configuration.
• If needed, we may do some development based on existing product.

5. Size

Product dimension: 70x46x12mm

Antenna connection: TNC (SMA) -50Ω

Interface definition:

6. Applications:

• Industrial automatic control and remote control
• Wireless data acquisition and SCADA
• Environment monitoring systems
• AMR Automatic Meter Reading
• Wireless data transmission, automatic data collection system;
• Low power telemetry
• Wireless conference voting system;
• Sports training & competition;
• Wireless POS, PDA wireless smart terminal;
• Electronic bus station and intelligent traffic;
• RF transmitter Wireless electronic display screen
• Wireless modem Automobile inspection and four-wheel orientation;
• Data communication used for railway, oil field, dock and army.
• LED display in thruway and public places
• Point to multi-point wireless network, wireless on-the-spot bus and automatic data collection system;