1400 - 1600 Hz bandwidth

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SA7ORA
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Joined: 2017/06/09 - 10:29
1400 - 1600 Hz bandwidth

Hi
I have seen several transmitters outside the nominal 1400-1600 Hz band for WSPR. They don't seem to be decoded properly by WSJT-X. Anyone knows how much the transmitted signal can deviate before it's no longer possible to decode? I'm using a reasonably modern receiver and believe that my receiver is accurate to 5-10 Hz or so.
Best regards
SA7ORA