Decoder BCD to 16 (Yaesu band decoder) not only for antenna switch

wiki order

This is simply but powerful decoder from BCD data input to 16 outputs, compatible with Yaesu BCD (Yaesu BCD decoder). You can use it everywhere you have less wires than you need and also with BCD (TTL) output devices (like Microham). You need only 4 wires and control up to 16 outputs. There is universal output driver. You can drive outputs by switching to GND or + Vcc (EXT) voltage. BCD inputs include RF and high voltage protection. Optional PTT input works as Hot Switch protection.

Main functions:

Parameters:

Use:


Matrix table for inputs and outputs:

BCD matrix table yaesu




Connection of control cables and power supply:

wiki


PTT hot switch protection:

wiki

Output voltage:


wiki


Output driver:

wiki


Open collector device:


  • Devices with the open collector (like B26-PA RF2K-S) needs external pull up resistors picture

  • 6-2 BCD connection

    Example with 6-to-1:

    wiki


    Example with PA BCD output:

    wiki


    Example with Microham devices:

    wiki




    Do you need TTL version - compatible with Microham and another devices? Continue there:


    wiki

    Do you need BCD to DEC higher voltage version - compatible with +12V? Continue there:


    wiki

    Download

    BCD to 16 decoder board
    Schematic and board pictures sch brd
    51
    We believe open source is a better way of doing things.
    View and download the Shield Schematic and PCB files.
    The hardware designs are released under the
    Attribution-NonCommercial 2.0 Generic