Update VarAC 3.7.9

VarAC. HF/FM Digital Chat Reinvented.

VarAC is a FREE, modern HF P2P real-time chatting application for the amateur radio operator that leverages the glorious VARA protocol.

Calling QRGs (USB dial)

20m – 14.105 MHz (Primary – day time)

40m – 7.105 MHz (Primary – night time)

80m – 3.595 MHz
30m – 10.133 MHz
17m – 18.106 MHz
15m – 21.105 MHz
12m – 24.927 MHz
10m – 28.105 MHz
6m – 50.330 MHz

VarAC main features

  • Call CQ using the VARA protocol
  • See if your partner is currently typing
  • Having fun while chatting with sounds & emojis
  • Supporting CAT command, RTS/DTS & OmniRig
  • Supporting two VARA modems
  • Type as many messages as you’d like
  • For best QSO performance monitoring
  • Set preconfigured welcome & away messages
  • Create predefined messages (RIG, Info…)
  • Select your desired QSO bandwidth
  • Let other people know you are standing by
  • No more typos. Spell check as you type
  • Supporting binary files, text, Images and more
  • Move QSO up or down with a single mouse click
  • Supporting ADIF format
  • Chose the colors/fonts you like. Use dark mode.


IMPORTANT NOTE: VarAC requires VARA-HF V4.6.0 or higher



New Features

  • TUNE button – set your ALC level directly in VarAC (requires VARA 4.6.2 and a VARA license)

  • <VER> tag – check VarAC version of your QSO partner

  • QSY sniffer – Easily check if your QSY Up/Down destination is free by right-clicking & Holding the QSYU/D button.

  • Read RIG freq using CAT commands: Turning your VFO knob now reflects on the VarAC console.

  • Frequency Schedule – Tell VarAC when and where you want to QRV. Great for day/night frequency changes.


  • CAT Frequency control for the remaining Yaesu rigs (FT-817,818,847,857,897)

  • Fix for Frequency control of rigs that has 10Hz resolution

  • Ignore double QSY invitation – when both sides send QSY invitations together.

  • Supporting frequencies of 2.4GHz (VARA-SAT QO100 Operations) in Cat Freq change/read, Frequency file, Free form QSY and others. (Note: OmniRig does not support above 2.1GHz)

  • Enabling “Debug mode” from the settings screen

Bug Fixes

  • With DTR/RTS PTT – showing an error “‘PortName’ cannot be set while the port is open”

  • Exceptions when trying to write to VarAC_traffic.lof file

  • Right clicking on an empty space in the LH lists generated an error.


Besturingssystemen: Alle Windows
Website: https://www.varac-hamradio.com/
Download:  https://www.varac-hamradio.com/download 
Licentietype:  Freeware
Nederlandse handleiding van ON2AD:  International manuals (non English) by VarAC community | VarAC (varac-hamradio.com)


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