Non decode of strong signal.... FIXED...

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Tue, 2008/12/16 - 08:49
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VK2XV
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Joined: 2008/12/15 - 19:48
Non decode of strong signal.... FIXED...

G'day All,

    ********* THIS PROBLEM HAS BEEN TRACED TO WSPR NEEDING A SOUNDCARD SAMPLE RATE OF 48000SPS.**********

When soundcard switched to 48000sps (was 44100sps) the 'non-decode of strong signals' behaviour disappeared. Apparently the soundcard XP OS default driver does a better job of downsampling from 48000sps to the 12000sps WSPR sample rate as they are harmonically related.

All is working fine except the strongest signal (ZL2FT) has never decoded here despite my setup being able to decode stations >15000km away at -17dB levels.

Tried varying the Dsec but to no avail.

Any ideas ?

Cheers

Steve VK2SRO

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