KCT

KCT NMEA SERIES

Flexible input.
Precise output.

KCT-HB4P is an RP2040-based programmable hybrid buffer that converts, filters and distributes NMEA 0183 data in one compact unit.

24 VDC2 INPUT / 4 OUTPUT00–99 DIP MODE
KCT-HB4P Hybrid NMEA Buffer

PRODUCT OVERVIEW

NMEA conversion and distribution
in one field-ready interface

Two NMEA 0183 inputs are processed according to the mode selected by the eight-pin DIP switch and distributed over four outputs. It resolves baud-rate, output-interval, talker-ID and sentence-format differences during equipment replacement or expansion.

01 · BAUD RATE

Baud-rate conversion

Connect equipment operating at 4800, 9600, 38400 or 115200 bps.

02 · INTERVAL

Transmission interval

Down-sample or repeat the latest sentence at the interval required by the receiving equipment.

03 · SENTENCE

Sentence conversion

Convert talker IDs and sentences, such as GPHDT to HEHDT.

04 · FILTER

Filter and generation

Pass required sentences, reject unwanted data and generate requested sentences.

SIGNAL FLOW

2 inputs · programmable processing · 4 outputs

IN-A / IN-BNMEA INPUT
→
RP2040 PICOPROCESSING
→
8-PIN DIPMODE SELECT
→
OUT-A / OUT-B4 OUTPUTS

SPECIFICATIONS

Key specifications

ModelKCT-HB4P HYBRID BUFFER
Power24 VDC
InputsNMEA 0183 · 2 channels (IN-A / IN-B)
OutputsNMEA 0183 · 4 ports
ProcessorRaspberry Pi Pico (RP2040)
Mode selection8-pin DIP switch · 00–99 scheme
Baud rates4800 / 9600 / 38400 / 115200 bps
ProcessingBaud, interval and sentence conversion · filtering · custom sentence generation
VIEW A4 BROCHURE

DIP MODE EXAMPLES

Typical mode examples

00

PASS-THROUGH

Outputs the received NMEA sentence without conversion.

10

BAUD CONVERT

Example: converts 4800 to 9600 bps.

20

INTERVAL

Example: converts a 1 Hz stream to 0.5 Hz.

30

SENTENCE

Example: converts GPHDT talker/sentence to HEHDT.

40

FILTER

Example: passes only selected HDT and RMC sentences.

Input/output specifications and mode assignments may be configured for each project.

NMEA 0183 TEST & COMMISSIONING UTILITY

Verify installation with
HDT, GLL and ZDA test signals

KCT's Raspberry Pi Pico browser utility generates heading, position, date and time sentences. Select baud rate and output interval, then monitor real-time status and logs to verify HB4P conversion, filtering and distribution in the field.

HEHDT · HeadingGPGLL · PositionGPZDA · Date & Time4800–115200 bps1 / 10 / 33 / 50 HzWeb Serial API
Pico NMEA 0183 generator control screen
Control screen for sentence values, baud rate, output interval and live logs
Pico HDT GLL ZDA Signal Generator manual
User guide covering connection, settings, output and status monitoring

LET'S NAVIGATE TOGETHER

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your next project.

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