MUF and Sporadic E

Sporadic "E"... this mainly occurs during the summer months in each hemisphere, however there are "spil-overs". The full cause of Sporadic "E" is not yet proved, many theories exist which include high altitude wind shearing, meteor activity, thunderstorms and of course the Sun. Many people's opinions relate to the Suns activity, as, this is the only common denominator, which changes between northern and southern hemispheres each year. Whatever the cause it gives the amateur chance to work vast distances on the VHF bands. MUF's (Maximum Usable Frequencies) have reached nearly to the UHF bands and produced openings as high as 220MHz. 50Mhz is frequently open during summer months for hours on end, during high intensity events multi/chordal "E" skips are common, (2/3/4 clouds align or tilt) and, produce contacts up to nearly 10,000 kilometres. Although sporadic "E" is usually a daytime event openings have been monitored through darkness hours, but the multi skip events seem to favour one of the stations being in the daylight.

This page will only show west europe spots.

 23-4-01

8.50 - 11.30 es between F6(in97) and T9/YO/I no spots found.

12.05 - 12.45

 some spots

DJ9YE 50130.0 UU2JJ nw here 1230 23 Apr

DD6EX 50084.0 UT5G/B 599 jo62 1234 23 Apr

PA5TA 50113.0 UU2JJ first Es for me in 2001 1240 23 Apr

17.23 - 18.00

agn es on the same day

DL6AMI 50061.0 EA3VHF 599 in jo50 1728 23 Apr

PE9DX 50130.0 IW1DIM/MM jn51 57 jo33 1739 23 Apr

DD6BKR 50120.0 EH6SA jo72-jm19 56 1741 23 Apr

OE1SOW 50000.0 ESCLOUD over jn47 1803 23 Apr

 25-04-01

ES at 17.43

DF7KF 50135.0 SV9/DK5YA KM35BD copied PA/ON via ES 1753 25 Apr (no copy in jo22xe)

F4JVG-@ 50000.0 VIDEO 48239 s9 jn16 1747 25 Apr

IW9BJU 50130.0 UT5JAJ kn64 first sporadic-E this ye1743 25 Apr

08.33-10.48

total of 3 es-clouwds and much fun for OZ stations in double hop

some spot's

08.33 sm6cmu - ut5jaj jo57 kn64

08.45 lz5uv - yl2jn kn12pr - ko26aw 53.6 mhz

08.58 iw1dim - sv1epp jn35tc - km17 54,1mhz

09.19 pa4pa - ut5g/b jo22qd - kn66ls

10.16 i0knq - es2qn jn61 - ko29

10.36 om8ny - uu2jj jn86eh - kn75ba muf max. 56,5 mhz

10.48 lz5uv - eh5xv kn12pr - im98wx

Info last week week16

please give reports of high muf to [email protected]

i get my info from
10 meters short skip                             rx HF3 target + wire antenne
48 video band                                     old  b/w tv ch 1 and 2    +    long yagi 3 elm
50 mhz                                                FT736      +   long yagi 3 elm
80 to 140 mhz                                     old radio up to 110 mhz  ariband rx on my thd7           vertical antenne/ vertical antenna
144 mhz                                              FT736 + 13elm

clusters
pi8dxw, db0mdx, internet cluster, many others

I'm mostly qrv on convers channel 14345
 

73 dennis pd0ros