WSPR Provides Insight into Band Conditions

I have been running WSPR using my main HF antenna and the IC-7100 the last few days on mainly 40m and 20m. I have noticed that at 2W on 40m I can make contacts to Australia, New Zealand and Japan around dawn on JT65. It is fairly easy to correlate WSPR with JT modes as the S/N thresholds are fairly similar. 20m has been tricky as there have not been many DX openings indicated by WSPR. Most of the openings have been towards Europe in the late evening. What is also clear is that these openings don’t necessarily mean the band is open to other modes even at higher power levels.


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