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Old May 22nd 20, 12:52 AM posted to rec.radio.amateur.moderated,aus.radio.amateur.misc,rec.radio.amateur.dx
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Default [VK2TPM] What WSPR signal to noise ratio is needed for sideband to be intelligible?


marxy's musing on technology

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What WSPR signal to noise ratio is needed for sideband to be intelligible?

Posted: 20 May 2020 12:55 AM PDT
http://blog.marxy.org/2020/05/what-w...-ratio-is.html



The end-fed antenna is working pretty well on 40m and I'd love to have a
contact with Sydney friends. John, VK2ASU, kindly agreed to run a WSPR
beacon so I could find the best times to receive him.

Over a 24 hour period, with him transmitting just 10mW, the best SNR was
-21dB here.

My question, to the brains trust hopefully reading, is what WSPR signal to
noise ratio would be enough such that


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