xVoiceKeyer (fka SDR Voice Keyer) for Mac version 3.01 released.

The SDR Voice Keyer for SmartSDR has been renamed to xVoiceKeyer and updated for SmartSDR 2.51 and above. The program was renamed xVoiceKeyer in recognition of Doug (K3TZR) the developer of xLib6000. Doug has ported the FlexAPI to the Mac which allowed the development of xVoiceKeyer and for Mario (DL3LSM) xDax and xCat.

xVoiceKeyer can run on the Mac with dogparkSDR or FlexRadio SmartSDR running in a virtual PC or even on another Mac or Microsoft Windows PC on the same network. xVoiceKeyer will also work with xSDR6000 and SmartSDR for IOS. You do not need xDax or xCat as the xVoiceKeyer handles all audio and control functions on its own. Please refer to my previous article for instructions. When using xVoiceKeyer you can choose the radio and station to control. You can easily switch between different stations if necessary.

xVoiceKeyer v3.01 can be download for free here. R


  • Mac OS 10.12 or higher (Mac 10.14 Mojave Compatible)
  • SmartSDR 2.0 or higher
    dogParkSDR 1.10 or higher

Audio file requirements:

  • Audio files may be MP3, AIFF, WAV and AAC. Using a WAV file will give you the best quality.
  • The file should be recorded at a 24Khz sample rate but others that are a multiple of 24khz will be resampled as necessary
    — Set as 32 bit Float if there is a choice