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📖 AA4TE Field Guide · Linux · IC-7300
PAT · Winlink
& VARA HF Settings
On this page: IC-7300 Connectors VARA HF Setup PAT Config Why Linux?
When using digital modes, settings can be a pain.
Here are AA4TE's settings for VARA HF working with Winlink alternative PAT on the IC-7300.
FIELD GUIDE OFFERINGS:
  • WSJT-X Settings
  • NanoVNA-H Settings

    • 1 Set Up Your IC-7300 for PAT / Winlink

    After changing these settings, Save a Pre-Set at MENU > PRESET:
    • Pick a blank location by long pressing "Save to the Preset Memory" choice.
    • Choose and enter a Preset Name.
    • Scroll to "Write" on the last page (8/8). Long-press <<WRITE>>.

    MENU > SET > CONNECTORS — Page 1/4

    ACC/USB Output Select

    AF

    ACC/USB Output Level

    65%

    ACC/USB AF SQL

    OFF (Open)

    ACC/USB AF Beep/Speech...Output

    OFF

    CONNECTORS — Page 2/4

    ACC/USB IF Output Level

    50%

    ACC MOD Level

    41%

    USB MOD Level

    50%

    DATA OFF MOD

    MIC/ACC

    CONNECTORS — Page 3/4

    DATA MOD

    USB

    External Keypad

    VOICE: OFF KEYER: OFF RTTY: OFF

    CI-V — see next section

    USB Serial Function

    MIC/ACC

    CI-V — From Page 3

    CI-V Baud Rate:

    19200

    CI-V Address:

    94h

    CI-V USB→REMOTE Transceive Address:

    00h

    CI-V — Page 2/2

    CI-V Output (for ANT):

    Off

    CI-V USB PORT:

    Unlink from [REMOTE]

    CI-V USB Baud Rate:

    Auto

    CI-V USB Echo Back:

    Auto

    CONNECTORS — Page 4/4

    RTTY Decode Baud Rate {Greyed Out}

    19200

    USB SEND/KEYING:

    USB SEND: DTR

    USB Keying (CW):

    Off

    USB Keying (RTTY):

    Off

    Inhibit Timer at USB Connections:

    ON

    PTT PORT Function:

    PTT Input + SEND Output

    2 Set Up VARA HF

    Settings > VARA Setup...

    TCP Ports:

    Command: 8300 Data: 8301

    Call Sign:

    AA4TE

    Settings > Soundcard...

    Device Input:

    PCM2901 Audio Codec Analog Ster

    Device Output:

    PCM2901 Audio Codec Analog Ster

    Channel:

    L

    Drive Level:

    -15 dB

    Settings > Waterfall

    ON

    3 Set Up PAT — Winlink Alternative

    PAT — Winlink Email over RF

    Get it at: getpat.io
    Read about it at: PAT wiki — CLI reference

    PAT Config — ACTION > CONFIGURE

    Call Sign and Maidenhead Grid Locator:

    EM94qg

    Secure Login Password (optional):

    your Winlink password

    Connect Aliases:

    used to set up favorites on the CONNECT screen

    Transports:

    Modem Address: 127.0.0.1:8300 Bandwidth: 500 Hz (limited by VARA "freemium") Rig: ic7300 PTT Control: Checked

    Rig Control > Hamlib rigs:

    Rig Name: ic7300 Connection Type: TCP Address/Port: localhost:4532 Default VFO: Default

    GPSd > Server Address:

    localhost:2947

    Default VFO:

    Default

    Top Ten Reasons to Switch to Linux

    VARA HF, mentioned above, runs on Linux via Wine (a Windows emulator). Here's why the whole OS switch is worth considering:

    ① No Licensing Costs or Activation Hassles
    Linux distros such as Linux Mint, Ubuntu, and Pop!_OS are completely free to download, install, and use indefinitely — no product keys, activation, or upgrade fees. This contrasts with Windows 11's paid licensing model.
    ② Better Privacy with Minimal Telemetry
    Linux does not collect and send usage data, diagnostics, or behavior tracking to a central company by default — unlike Windows 11's built-in telemetry and advertising features. You control what runs on your system.
    ③ No Forced Updates or Interruptions
    You decide when (and if) to update the system or apps. Updates rarely force reboots during work, and there's no risk of unexpected restarts. Windows 11 often pushes updates aggressively, sometimes disrupting your workflow.
    ④ Revives Older Hardware
    Linux distros run efficiently on older PCs that fail Windows 11's strict TPM 2.0, Secure Boot, or CPU requirements. They use fewer resources overall, keeping systems responsive longer without needing expensive upgrades.
    ⑤ Lighter Resource Usage and Better Performance
    Many users report lower CPU/RAM idle usage, faster boot times, and a snappier feel — especially on mid-range or older hardware — due to the absence of bloatware and heavy background services.
    ⑥ Greater Customization and Control
    Change almost anything — desktop environment, themes, window behavior, or even the kernel. Linux feels like your OS, not one designed to nudge you toward services or subscriptions.
    ⑦ Enhanced Security Model
    Linux's permission system and smaller attack surface (plus centralized, vetted repositories) make it less prone to common malware. You rarely need third-party antivirus. Security patches arrive quickly without forced reboots.
    ⑧ Easier, Centralized Software Management
    Install, update, and remove thousands of apps via simple GUI tools or one-line commands. Everything updates together — no hunting for individual installers. Modern tools like Snap/Flatpak make popular apps easy.
    ⑨ No Bloatware or Ads
    Linux distros ship clean, without pre-installed trials, promotions, or "recommended" content in the start area. The OS stays out of your way, focusing on productivity instead of upselling.
    ⑩ Strong Community Support and Stability
    Excellent documentation, forums, and a massive user base. Long-term support (LTS) releases provide years of updates. Many find it more stable for daily use, with fewer crashes or slowdowns over time.

    Things to Consider Before Switching

    Gaming:

    Tools like Proton (via Steam) make most Windows games playable, often with good performance.

    Software Compatibility:

    Core apps (browsers, office suites, media tools) have strong Linux versions. For rare Windows-only programs, options include Wine, virtual machines, or dual-booting. VARA HF runs on Linux via Wine.

    Learning Curve:

    Ubuntu's GNOME desktop is modern and intuitive, but expect a short adjustment period — many find it worthwhile.