Know More About Radio Chipset BK4829

Know more about the BK4829 Radio Chipset

The Beken BK4829 is an integrated half-duplex TDD FM transceiver chipset designed primarily for use in portable two-way radios and other analog communication devices. It is commonly found in dual-band handheld transceivers (VHF/UHF) and low-cost consumer wireless systems.

Functional Features

• Integrated RF transceiver with low-IF image rejection architecture, reducing external filtering needs.

• Supports analog FM modulation and reception.

• FSK modem for data transmission, compatible with F2D/F1W emissions.

• CTCSS/DCS tone encode and decode for selective calling and privacy.

• DTMF generation and detection for signaling and tone dialing.

• Scrambler and descrambler for basic voice inversion privacy.

• Voice Operated Transmission (VOX) function for hands-free use.

• RSSI measurement (Received Signal Strength Indicator) with analog and digital outputs.

• Configurable via 3-wire SPI interface up to 8 Mbps for fast MCU communication.

• 26 MHz reference crystal required for synthesizer operation.

Typical Applications

• Portable and handheld two-way radios (VHF/UHF dual-band)

• Personal radio services (FRS/PMR/DPMR)

• Baby monitors and toys

• Wireless intercoms and low-cost analog communication systems​

In summary, the BK4829 is a successor to the BK4819, operating across slightly narrower frequency bands but maintaining similar architecture. It combines the PLL, modulator, demodulator, and audio circuitry into a single chip, offering compact, low-power, and cost-efficient design for analog radio communication devices.