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CT-17 Sub?

Discussion in 'General Technical Questions and Answers' started by K6YF, Feb 28, 2020.

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  1. K6YF

    K6YF Ham Member QRZ Page

    Do the USB adapters being sold on ebay to utilize CI-V data replace the need for the CT-17 converter? The ads seem to indicate this but they're a little ambiguous.

    These are the ones with a 3.5mm plug on one end that goes in the radio CI-V port and a USB conn. on the other.

    tnx es 73
    Robert K6YF
  2. W9GB

    W9GB Ham Member QRZ Page

    Icom developed the CI-V “serial bus” network in the 1980s.
    VERY SIMPLE to properly DIY Build with GOOD PARTS (USB Bridge to UART).
    SAVE Yourself GRIEF ... Use a Genuine FTDI FT232R - USB to Serial TTL Bridge Chipset.

    On eBay, and his Internet store, W2ENY sells a Kit of Parts. ct17 kit/
    USB to CI-V Interface
    by Mark Spencer WA8SME
    QST Magazine, May 2007, pp 54-55 USB with this USB to CI-V Interface.pdf

    Thanks to Robotics and Android experimenters,
    off-shelf interface pieces are available & cheap.

    SparkFun Electronics (Colorado)
    using FTDI FT232RQ or FT232RL USB Bridge Chips

    DEV-09718 (cable), 5V serial UART
    DEV-09716 (breakout board), 5V serial UART
    Connecting an Icom Radio to a Personal Computer (PC)
    by AB4OJ

    Icom CI-V Interface
    by Greg Ordy, W8WWW Radio/Experimentation/CIVInterface.htm

    Simple Icom CI-V Interface
    by G3VGR

    CI-V Primer
    by DF4OR
    Last edited: Feb 29, 2020
  3. AA4PB

    AA4PB Ham Member QRZ Page

    You do not need a CT-17 when you use one of the USB to CI-V converters. The CT-17 is an RS-232 to CI-V converter. You would need a USB to RS-232 converter to connect the CT-17 to a USB port.
  4. K6YF

    K6YF Ham Member QRZ Page

    Thanks to both of these replies. It gives more than enough to go on. My only prior experience with this bus was on an IC-7300 but I didn't use it much.

    Great info!

    Robert K6YF

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