PCBA Consumer Electronics Ham Radio Handheld SMT Printed Circuit Board Assembly

PCBA  Images

About TECircuit

Found: TECircuit has been operating since 2004.

Location: An electronics manufacturing service(EMS) provider located in Shenzhen China.

Item: Customizable EMS PCB, offers a full range of one-stop shop services.

Service: Printed Circuit Board (PCB)and Printed Circuit Board Assembly(PCBA), Flexible Printed Circuit Board(FPC), Components Sourcing, Box-Building, Testing.

Quality Assurance: UL,ISO 9001, ISO 14001, ISO 13485, ITAF 16949 andcomplied with ROHS and REACH.

Factory Pictures:
Company's own plant : 50,000 sqm; Employees : 930+; Monthly production capacity : 100,000 m2

PCBA  Applications

• Amateur Radio Communication and Experimentation: The PCBA enables licensed operators to communicate over designated VHF/UHF/HF bands, supporting voice (FM, SSB), digital modes, and data transmission for personal experimentation, technical learning, and global social interaction.

• Emergency Communication and Public Service: Serves as a critical, infrastructure-independent communication tool for disaster response and public service events. The PCBA allows operators to establish networks when cellular systems fail, supporting coordinated relief efforts by organizations like ARES and RACES.

• Outdoor Adventure and Field Operations: Provides reliable long-distance communication for hikers, mariners, and expedition teams in remote areas beyond cellular coverage. The PCBA's design prioritizes robust performance in diverse and challenging environmental conditions.

• Radio Direction Finding and Fox Hunting: Facilitates amateur radio sport competitions and training exercises where participants use the handheld's receiver and signal strength indicators, processed by the PCBA, to locate hidden transmitters.

• Digital Mode and Satellite Communication (for Advanced Models): In sophisticated units, the PCBA decodes and encodes digital protocols (e.g., DMR, C4FM, APRS) and can even handle the Doppler shift compensation and telemetry needed for making contacts through orbiting amateur radio satellites.

• Educational Tool for Wireless Technology: Acts as a practical platform for students and enthusiasts to learn about radio wave propagation, antenna theory, electronics, and radio protocol through direct, hands-on operation.

PCBA Features 

1. Multi-Band RF Transceiver and Synthesizer: The PCBA integrates a specialized RF transceiver IC and a precise frequency synthesizer. This allows the radio to generate and receive signals across a wide range of amateur bands (e.g., 144-148 MHz, 430-450 MHz), with stable, crystal-controlled frequency accuracy.

2. High-Dynamic-Range Receiver Front-End: Features a receiver design with filters and low-noise amplifiers (LNAs) that can handle strong nearby signals without being overwhelmed (desensitization), ensuring clear reception of weak signals even in electrically noisy urban environments.

3. Efficient RF Power Amplifier (PA) with Adjustable Output: Includes a robust RF power amplifier stage capable of delivering typical outputs from 0.5W to 5W or more. The PCBA provides circuitry to adjust and regulate this output power level to conserve battery or comply with regulations.

4. Digital Signal Processor (DSP) for Audio and Filtering: Incorporates a DSP chip that performs critical audio processing. This includes filtering (to reduce noise and interference), demodulation of various signal types, and in advanced models, decoding of digital voice codecs and data packets.

5. Comprehensive Microcontroller Unit (MCU) for System Control: A central MCU manages the user interface (keypad, display), channel memory (hundreds of stored frequencies), settings (CTCSS/DCS tones), and coordinates all other PCBA subsystems, serving as the device's brain.

6. Advanced Power Management and Battery Monitoring: Employs a sophisticated PMIC optimized for high-current transmit bursts and low-power receive states. It provides accurate battery level monitoring, low-voltage cutoff protection, and manages charging circuits for NiMH or Li-ion battery packs.

7. Ruggedized Construction and Environmental Sealing: The PCBA is often conformally coated and designed with components rated for extended temperature ranges. Its layout and construction prioritize durability to withstand vibration, moisture, and the physical demands of field use.

FAQ

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