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Created April 29, 2024 05:56
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Icom IC-7300 WSJT-X FT8 Settings
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7300_wsjtx.md

IC-7300 digital modes/FT8 setup

WSJT-X Radio tab

  • Serial Port: /dev/cu.SLAB_USBtoUART
  • Baud Rate: 115200
  • Data Bits: Eight
  • Stop Bits: Two
  • Handshake: None
  • Force Control Lines: (Leave both empty)
  • PTT Method: CAT
  • Mode: Data/PKT
  • Split operation: Rig

WSJT-X Audio tab

  • Input/Output set to the 7300's USB device

WSJT-X Waterfall + Main Window

  • Bins/Pixel: 4
  • Start: 200-300 Hz
  • N Avg: 2
  • Palette: Digipan or to taste
  • Cumulative
  • Flatten: unchecked
  • Ref Spec: unchecked
  • Spec 30%
  • Sliders on default/center except upper-right adjust to taste, usually ~30%
  • Pwr slider 100%

7300 rig settings

  • Mode: USB-D
  • Filter Bandwidth set to widest possible (3.6k), sharp falloff
  • Function menu: AGC, NR, NB, Notch, Preamps, Vox, etc all turned off
  • Display typically set to waterfall + Meter
  • Set -> Connectors:
    • ACC/USB Output Select: AF
    • ACC/USB AF Output Level: 10-30% (adjust as needed for band, noise level)
    • ACC/USB AF SQL: Off (Open)
    • ACC/USB AF Beep: Off
    • ACC/USB IF Output Level: 50%
    • ACC Mod Level: 50%
    • USB Mod Level: 40%
    • Data Off Mod: MIC,ACC
    • Data Mod: USB
    • CI-V:
      • CI-V Baud Rate: Auto
      • CI-V Address: 94h
      • CI-V Transceive: ON
      • CI-V USB->Remote Transceive Address: 00h
      • CV-V Output (for ANT): Off
      • CI-V Baud Port: Unlink from [REMOTE]
      • CI-V USB Baud Rate: 115200
      • CI-V USB Echo Back: On
    • USB Serial Function: CI-V
    • RTTY Decode Baud Rate: 19200
    • USB Send/Keying: All Off except Inhibit Timer

Mac OS Settings

  • Applications->Utilities->Audio Midi Setup->USB Audio Codec 1: Left/Right both set to approximately -9.0db, adjust as needed while monitoring ALC levels on the rig. ALC should be at about 1/2 to 3/4 while transmitting. Some experimentation and outside verification (Web SDRs?) needed to make sure you're not overdriving the audio.
  • Silicon Labs CP210x USB to UART Bridge VCP Drivers installed: https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
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