Development of digital interphone module

Development of digital interphone module

Development of digital intercom module for three defense mobile phone

Development of DMR module scheme of three defense mobile phone intercom, building intercom, Tianyi intercom and digital intercom

PCBA scheme of DMR digital interphone module interworking with moto hytera cluster

Low cost digital analog intercom module overall DMR solution

Development of low cost DMR digital FM analog dual-mode walkie talkie

Development of wireless intercom module scheme

Building digital intercom module DMR digital analog intercom scheme

Mobile phone digital intercom module DMR digital analog intercom scheme

DMR digital intercom scheme of Mobile Phone Intercom module

DMR digital intercom scheme of building intercom module

Full duplex digital interphone module scheme

350MHz megabit digital intercom module DMR technical scheme

1. Mobile intercom module (based on hr_c3000 chip)

It is a digital intercom module adopting DMR standard, which supports simplex voice and confirmed / unconfirmed data short message communication. This module has built-in high-performance RF transceiver chip, RF power amplifier and DMR digital intercom chip. External MCU can set the working parameters of the module and control the working state of the module through standard asynchronous serial communication. The module only needs external antenna, microphone and voice power amplifier to form a complete DMR digital walkie talkie. It supports 350MHz and 400 ~ 470MHz frequencies.

Application field: Three Prevention intercom mobile phone / miniaturized digital intercom / mobile digital intercom system

2. Building intercom module (based on hr_c5000 chip)

Based on HR_ C5000 chip for digital analog compatibility design; Compatible with digital TDMA, DMR digital mode and FM analog mode. It supports voice and data services in DMR direct and relay mode, supporting full duplex, data simultaneous interpreting and other functions. In terms of simulation, it supports sub tone signaling such as CTCSS and cdcss, and supports 12.5khz analog voice communication; Be able to communicate with moto / Haoyitong DMR walkie talkie. It supports 350-390mhz and 400-470MHz frequencies.

Application field: building intercom / digital intercom system / digital intercom

3. PCBA scheme development of digital walkie talkie (based on hr_c5000 or hr_c3000 chip)

Based on HR_ C5000 or HR_ C3000 chip provides digital interphone PCBA board or module according to the functional requirements of customers, supports the compatible design of digital and analog interphone, supports the interworking with moto and hytera, better rational cluster networking application, reduces costs and has more competitive advantages. It supports 350-390mhz and 400-470MHz frequencies.

4. Analog intercom module - low cost and minimum integration (based on at1846s and rda1846s chips)

The company has independently developed and designed a single-chip walkie talkie solution. All traditional discrete component solutions are integrated into a small module. The module fully integrates all functions of the walkie talkie, with built-in high-performance RF transceiver chip, microprocessor (MCU) and RF power amplifier (PA) The module has the advantages of small volume, high integration, stable performance and flexible application, and meets the interphone standards of most countries in the world. It is widely used in any mobile handheld products, such as three prevention interphone, wireless interphone, paging system, smart home, industrial data acquisition and so on.