Echolink w/ Raspberry Pi 3 w/ Yaesu FT-2600m

Discussion in 'Echolink/IRLP Tech Board' started by KF4JNZ, Apr 17, 2018.

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  1. KF4JNZ

    KF4JNZ Ham Member QRZ Page

    Hey guys, I want to get a echolink node started up using a Raspberry Pi 3 with Svxlink and a Yaesu FT-2600m. Someone recently said I needed a cable that went from Serial to USB/Sound to usb on the Pi 3 and usb sound card. Can someone give me instructions for making such a cable?
  2. K5DVT

    K5DVT Ham Member QRZ Page

    It's a pretty typical mobile interface... There are many online, but essentially this is how it goes:
    Computer Radio
    Speaker Mic
    Mic Speaker
    Ground Ground
    RS232 -> Transistor -> PTT

    The purpose of the Transistor is to switch the RS232 signal (Pin 6? I don't remember) from a High signal (Meaning 5 volts is present to Key radio) to a low signal (it is grounded when it needs to transmit. Typical mobile radio configuration.)

    I don't discuss isolation (well, or go into great detail) or impeadence matching, but look up the "Easy Digi" Interface on E-Bay. For $10 you get a interface kit that has the necessary audio transformers and optical switch to do pretty much what I described above.

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