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1 July 2021: We are pleased to announce that EchoLink for Windows version 2.3 is now available. Please see the Download page to download. The changelog is shown below.

Latest Features

Current Version: 2.3.121

2.3.121 (July 1, 2021)

  • Adds support for the DMK Engineering USB Radio Interface (URI) as an optional PC-to-radio interface for Sysop mode. (This is the same device commonly used for Asterisk/app_rpt installations.)
  • Adds support for a secondary audio input and/or output device to be designated. This can be handy in Sysop mode as a simple way to monitor the local link, if a second sound device is installed, or to be able to join a QSO using a local microphone and speakers.
  • Adds support for "confidence signal", for use on a simplex link, to verify to a local RF user that the last transmission was received by the link.
  • Enhances the Web remote-control feature for more reliable operation with different browser types, and adds support for Call CQ to be activated remotely.
  • WAV files for custom signals, voice IDs, welcome messages, and audio playbacks can now be in any integral linear PCM format, mono or stereo, 8, 16, 24, or 32-bit, at any sample rate. (Previously this was limited to 8000 Hz mono.)
  • Adds the ability to automatically save and restore volume-control settings (in Sysop mode).
  • Adds an Audio page to the initial setup and Link Setup wizards.
  • Fixes an issue that could cause Explorer View to update incorrectly when displaying contents of a sub-folder under Favorites.
  • Fixes an Installer issue that was causing a shortcut to be installed on the Desktop that did not directly launch the application.
  • Fixes a potential race condition that could cause a crash in Sysop mode when using the subaudible tone option.
  • Tested for compatibility with Windows 11.

2.2.115 (May 20, 2021)

  • Improved handling of window sizing and text scaling on high-resolution monitors
  • Updated icon set for application, toolbar, and Explorer views, including high-resolution icons for high-DPI monitors
  • Improved handling of audio device assignments; application detects if previously-configured devices are no longer available (not plugged in) and reverts to default audio devices with a warning
  • Support for more varieties of MP3 audio files for playback, with improved sound quality
  • When selecting a COM port in Sysop mode, labeling each port with its COM port number as well as the device name
  • Fixes an issue that could cause a crash when using the Subaudible Tone option for TX Ctrl in Sysop mode

2.1.109 (March 18, 2021)

  • Fixes an issue that could prevent stations calling CQ from being able to connect to each other.

2.1.108 (March 16, 2021)

  • Updated main window look, with dockable menu bar and selectable visual styles
  • New "Call CQ" feature (also to be rolled out on Mobile app editions), including DTMF code to activate
  • Automatic Proxy selection option
  • Migrated to 16-bit audio, to match all modern sound cards. This is a significant change to the audio chain that should result in noticeably better SNR and audio quality.
  • Better sizing/rendering on Windows "large font" and/or high DPI settings
  • Fixed bug with mislabeled audio devices on Audio tab
  • Added Recent QSOs folder to Explorer View
  • Explorer View is now the default
  • Added Search Results folder for a "find all" Search function
  • Improved inbound/outbound Firewall Tests
  • Clearer labeling of available COM ports in drop-downs for Sysop configuration
  • Added SignaLink (VOX) as a third interface option in Setup Wizards
  • Option to enable a continous subaudible tone to keep VOX-driven devices keyed consistently throughout each transmission.
  • Smarter handling of connection message protocol to improve connect reliability after IP change
  • Removed support for, and mentions of, dial-up networking
  • Option to show timestamps for each message in text-chat window
  • Fix for not muting conference audio during playing of Welcome message to newly-connected peer.
  • Removed "Auto-select mic input" PTT option. (This was only available on Windows XP and below.)
  • Revised Help file.
  • Added "Reset to Defaults" button on Setup->Timings tab; adjusted numerical validation ranges.
  • Extended maximum length of Name field to 18 characters.

2.0.908 (May 22, 2007)

  • Fixed problems with displaying Asian characters in Chat window and Station List.
  • Fixed intermittent page-refresh problem with Web remote control feature (in Sysop mode).

Upgrade Notes

If you are upgrading from an earlier release of EchoLink, please note the following:

  • EchoLink 2.1 and above runs on Windows Vista and above (for example, Windows 7 and Windows 10). Windows XP, and editions prior to XP, are no longer supported, nor recommended. Please use the prior version if you are running a very old Windows edition.
  • If you are upgrading from 2.0, please note that any Countries you may have selected in the Security tab (under Preferences) will not be carried over, and must be re-configured.
  • It is not possible to downgrade to an earlier version using the Installer. For example, if you've upgraded to 2.1 and wish to revert to 2.0, you must un-install 2.1 first. (Your configuration settings will not be retained and will need to be re-entered.)


  • If you can see the list of stations, but are having difficulty connecting to other stations on EchoLink, please read the section Firewall Solutions.
  • Stations which have just come online, or have just changed status, are highlighted in yellow in Index View.

Known Bugs

  • Version 2.3.121 fixes all previously-known bugs.


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