There are no ads, please add some
Changes in propagation give huge changes in signal strength. When the propagation get betters the signal strength and the value of the signal to noise ratio (SNR) will increase.
So the higer the SNR the better the propagation.
To compare WSPR spots I calculate the minimum power that is required the make a WSPR spot.
The SNR of a WSPR spot can be as low as -33 dB. But when the SNR is -29 dB the WSPR will be correctly decoded. So the minmal SNR to calculate the lowest possible power is -29 dB.
Read Full Article:
Recent Posts
New ICOM 7300 – PRICE ?
IC-7300 tax selling price ¥ 128,000! Reservations accepted start! If CQ ohm Read more
HF Linear 2KW HF2015DX – Chinese
HF2015DX RF Linear amplifier coverd 1.8-30MHz amateur band , using Chinese FU728F ceramic tetrodes working at Class AB1 Input:30-40W output:2000W... Read more
CQ WW160 – Meter Contest
Contest Dates CW: 2200Z January 25 – 2200Z January 27, 2019 SSB: 2200Z February 22 – 2200Z February 24, 2019 The 2019 CQ World Wide 160-Me... Read more
How to work FM satellites
Simon 2E0HTS has released a video that shows him making contacts via the amateur radio satellite SO-50. This satellite carries an FM transponder that... Read more
Local amateur radio operators reach out to world
” By ADAM POULISSE – Local amateur radio operators reach out to world Mike Heiderscheidt was sitting in the basement of his Waterma... Read more
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fwspr-propagation-analysis-by-pa1b%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
