Welcome to the new FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
If you are having a problem, please refer to the product documentation or check the Help Center for known solutions.
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.

Audio delay on Maestro receive of around 0.5 seconds



  • DL4RCE
    DL4RCE Member ✭✭

    Hi John, what Flexradio do you have? I did experience big delays with 6400 6600er series.



  • John, G3WKL
    John, G3WKL Member ✭✭

    Volker, Mine is a 6700

  • DL4RCE
    DL4RCE Member ✭✭

    Ok, thanks.

  • W3TAC_Tony
    W3TAC_Tony Member ✭✭
    Due to the audio delay problem; my 6500, Maestro, local wired LAN and switch, MARS-ALE stops scanning on the next (wrong) channel when an ALE signal is received at one channel per second. At five channels a second, it will stop two or three channels later missing the call.
  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin

    The latency in Windows Audio is a well known issue and this is not an issue with SmartSDR on a PC or SmartSDR on a Maestro which runs embedded Windows.

    I discuss it in detail here:

    It is a Microsoft issue to resolve however if we can figure out a better way we will be happy to integrate it. As Tim mentioned we always continue to do things to improve latency.

    I hope that helps.


  • Les Brown
    Les Brown Member ✭✭

    Has this issue of audio delay been fixed? The last message was from February, 6 months ago.

  • KD0RC
    KD0RC Broomfield, COMember, Super Elmer Moderator

    Hi Les, it is very doubtful that Microsoft will do anything about the latency through Windows. It is not something that is noticed by most of their user base.

    I get audio from the speaker jack on the back of my 6400 when I operate from home, so the Windows-induced latency is not a factor. When I operate remotely and take audio from my laptop, I can really tell the difference as I not only get the latency from Windows, but also get the added latency from the Internet.

    So if latency is an issue (as in the ALE example, above), taking audio from the rig itself will help quite a bit.

  • Dan Trainor
    Dan Trainor Member ✭✭

    Please, has this issue been fixed? I need to know before I start testing work. Thank you, Dan WA1QZX

  • DL4RCE
    DL4RCE Member ✭✭

    Still the same delay.


  • Dan Trainor
    Dan Trainor Member ✭✭

    Oh my. Thank you. Dan

Leave a Comment

Rich Text Editor. To edit a paragraph's style, hit tab to get to the paragraph menu. From there you will be able to pick one style. Nothing defaults to paragraph. An inline formatting menu will show up when you select text. Hit tab to get into that menu. Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. You may navigate to these using the arrow keys inside of the editor and delete them with the delete or backspace key.