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| Recent WSPR spots today |
17 Jul 2014
10m - tropo?
In the last few hours, I have spotted PB0AIC several times with low(ish) Doppler at 288km. This is far too short for Es (unless the skip is extremely short, suggesting a 2m Es opening?) so I wonder if this is pure tropo? The distance exceeds most GDX (usually possible with aircraft reflections) out to around 200km. I have spotted PA stations before on 10m now.
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2 comments:
Hello Roger
I remember reading in the VHF DX handbook that the distance of a single hop sporadic E is greater the higher in frequency you go so the skip on 28Mhz should be shorter than on 144Mhz
Yes, that is so. VERY short Es skip on,say, 28MHz is a good indicator of Es on much higher frequencies with a longer skip range. But the "skip" here is, I think, far too short for 28MHz Es. I may be wrong, but suspect tropo or aircraft.
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