Programmable Oscillators

Discussion in 'Homebrew and Kit Projects' started by W8TMT, Jun 25, 2019.

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  1. VK3ZYZ

    VK3ZYZ Ham Member QRZ Page

    The Si5351 boards are pretty good. My version is at...
    http://www.sadarc.org/index.php/projects/
    This is not unique by any means, and I made the board to not use surface mount as that scares some folk off.
    So far, I have it running a Hawk RFDS radio, and an FT75B. The FT75B version is not posted as yet.
    FT75B_VFO.jpg
    The 7pin socket was removed and an 8 pin DIN used to replace it. A small board with resistors on it is connected to the band switch that went to the 7 pin connctor, and the selected voltage is read by the Arduino to indicate the band. All signals, power and VFO out now just use the DIN connector so only one cable is needed.
    FT75B_VFO2.jpg
    A smaller version will be next, to run some VHF and UHF radios.
    It would be quite interesting to make a version with the AD9850 board to see how they compare.
    These are quite easy to build and I would encourage interested parties to have a go.
    Bring life back to old crystal locked rigs.
     
    Last edited: Jul 12, 2019 at 2:54 AM

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