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W7NIKW7NIK Member ✭✭
edited December 2019 in FLEX-6000 Signature Series
I am new to flex , I have. 6300 with sda100 controller. I have read some stuff on this web site . I am not sure where I connect this sda100? Looks like I have make a lot of different cables , I am guessing the db9 connector on the back of the radio ?


  • MackMack Member ✭✭
    edited December 2019

    The connector on the back of the radio is an HD DB-15 not DB-9. Do not ever connect a peripheral there. 

    I run three SteppIR controllers. Please download the USB Configuration Guide and look at the example there. https://www.flexradio.com/downloads/usb-cable-interface-guide-pdf/

    You can very easily build your own interface cable if you have basic soldering skills.
    Here is the cable wiring diagram:

    Several cautions:
    1. You must use the top DB-9 connector on the SDA-100 (it says data out). No, I'm not making a mistake it is data out.
    2. You must use a genuine FTDI chipset in the USB to DB-9 connector that plugs into the USB port on the back of your radio.
    3. On the SDA-100 set the radio type to Kenwood, 19,200, 8, N, 1
    4. Configure the USB Settings in SmartSDR or Maestro to set the cable as shown in the USB guide.
    5. Make sure Autotrack is ENABLED using the button on the front panel of your SDA-100.

    That's it. Pretty simple. Ask questions if you get stuck.


    Alpha Team

  • Mike-VA3MWMike-VA3MW FlexRadio Employee, Community Manager admin
    edited September 2019
    Thanks Mac

    The document that describes how to connect devices directly to the radio can be found here:


    Not only can the Steppir be connected, so can many other devices, all at the same time.

    Mike va3mw

  • W7NIKW7NIK Member ✭✭
    edited December 2019
    Wow !!! Unbelievable support, grateful for the response
  • W7NIKW7NIK Member ✭✭
    edited December 2019
    The USB / db9 Ftdi is the only style I should? . I have older one that did show up in smart sdr software . I also have wavenode sensors for RF power , can this be added to the usb on the back of the radio ?
  • MackMack Member ✭✭
    edited September 2019
    Yes, the USB to serial cable must use an FTDI chip. No, the Flex cannot read PowerNode sensors. A radio can only output frequency, band, PTT type data for USB.
  • W7NIKW7NIK Member ✭✭
    edited September 2019
    I have a  Startech Ftdi cable , recognized by the 6300 , I  checked the pin out 
    I have followed the instructions .
    I cannot get to work. Do I need the antenna connected.? Works when I do  manual . 
    I get the flashing tuning. 

    I loaded the drivers on my computer the startech  was updated. I plugged it in the back of the 6300 and I do not know  what USB port it is . My smartCAT has only one port. com 1

    I even tried  DDUtil going through the 6300 usb port still not able to connect

    Still not working
    My usb log 

    06:14:32 (TX): IF000141344000100+0000000000020000000;
    06:14:34 (RX): IF;
    06:14:34 (TX): IF000141344000100+0000000000020000000;
    06:14:35 (RX): IF;
    06:14:35 (TX): IF000141344000100+0000000000020000000;
    06:14:36 (RX): IF;
    06:14:36 (TX): IF000141344000100+0000000000020000000;
    06:14:37 (RX): IF;
    06:14:37 (TX): IF000141344000100+0000000000020000000;
    06:14:38 (RX): IF;
    06:14:38 (TX): IF000141344000100+0000000000020000000;

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