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Olivia 8/250 transmit frequency

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  • Olivia 8/250 transmit frequency

    When transmitting in Olivia 8/250 or Contestia 8/250 the TX frequency is approx 120 hz lower than where the receive cursor is located on the waterfall. Not sure what is causing the shift. Any ideas?

  • #2
    John, Welcome to the Forum

    It would be helpful if we know what version of HRD you are using and what is your radio and interface ...

    That being said I tried Olivia 8/250 on my setup and saw no offset ..

    I wonder if you have tried PSK or RTTY-45(AFSK) or any other sound-card mode ?.. If so do you see the same offset ??

    There is a transmit offset in 'Program Options', 'QSO', 'General' ... it allows an offset of +/- 100 HZ, normal setting is zero ... however that would show up as an offset in all modes ...

    If it shows in all modes then you might try a soundcard calibration .... found under 'Program Options', 'Soundcard' ... These however are usually small offsets of 20-30 Hz

    Of course the most obvious is the transmit lock (split mode) ... Padlock on menu bar
    Last edited by W3RJW; 03-20-17, 19:50.
    Ron, W3RJW

    HRD v6.4.0.638
    Acer Aspire XC600, Intel Pentium Dual Core 2.9GHz, 8 GB Memory, 64-bit OS, Windows 8.1,
    Access Data Base
    FTdx-5000+Timewave Navigator Interface/FTdx-3000+SignaLink USB Interface, SteppIR Interface