digimode interface with a FT 840?

Discussion in 'Working Different Modes' started by MI0OIM, Apr 24, 2021.

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  1. MI0OIM

    MI0OIM Ham Member QRZ Page

    I have worked PSK31 and RTTY with no interface for years.

    I have a manual PTT switch, a line out of the PC to a mic plug and a line from the headphone jack to the PC.

    rough and dirty, but it works. 71 countries worked so far.......


    How much hassle is setting up a "real" interface?

    it would handle the PPT automatically, but is there any other advantage?

    thanks for your wisdom!
  2. PY2RAF

    PY2RAF XML Subscriber QRZ Page

    Look for the FIF232 schematic

    long story short it is more a cmos/ttl level converter - and will enable you to get the CAT tune / ptt/ mode set going. Remember that ft8 needs accurate timing and a manual ptt could be the pain point.

    Then; since you do work rtty psk means you do have proper audio from/to computer going.

    Honestly ; not much of a hassle and doable with less than $50 budget. Good luck!!
  3. KI4ABA

    KI4ABA XML Subscriber QRZ Page

    I use a BlueMax49ers USB to CAT cable from Ebay to control my FT840, first from a laptop, now from a Raspberry Pi. It has an FTDI chip, so it actually works well. It handles PTT and frequency control. It might do other things too, but that is all I use it for.

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