Hi Pascal, MF
Last night we got some spots again
2018-05-20 01:40 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129
2018-05-20 01:20 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129
2018-05-20 01:00 EA5DOM 0.475608 -30 0 IM98xn 1 FR5DH LG78pw 8783 129
2018-05-19 23:40 EA5DOM 0.475608 -32 0 IM98xn 1 FR5DH LG78pw 8783 129
2018-05-19 21:30 EA5DOM 0.475608 -30 0 IM98xn 1 FR5DH LG78pw 8783 129
2018-05-19 21:20 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129
2018-05-19 21:00 EA5DOM 0.475608 -30 0 IM98xn 1 FR5DH LG78pw 8783 129
2018-05-19 20:10 EA5DOM 0.475608 -31 0 IM98xn 1 FR5DH LG78pw 8783 129
I'm afraid (and really hope) that there is no correlation between earthquakes and MF propagation
But really wondering why I'm getting so good chances in this path. It is not by brute force and ERP power
So, the other possibility is antenna radiation pattern in vertical plane. The 90m vertical has probably a
very low radiation pattern. And at sea coast that means even more chances to get a very flat take off
angle to FR5. So low that may be I can reach there with four hops instead of five, which would be the
case for an average antenna with higer radiation angle
Four hops for 8783Km distance is about 2196Km per hop. Which is under the theoretical maximum
of 2235Km for an E layer situated at 100Km height
Path profile from here to Reunion, providing four 2196Km hops shows that first hop would land in south
Libya desert area, second in Sudan desert and third into the ocean, not far away from the coast of Kenia
That third bouncing in sea water would be a bonus for a weak signal to reach Reunion in the next bounce at
decodable levels. With five shorter hops the third would land on ground and the extra attenuation may
left no much for a fourth hop to the ocean and then a five one
This are just my thoughts. Would be interesting to know experts opinion
73 de Luis
EA5DOM
Hi MF,
I am not a specialist in the MF propagation and earthquakes, but I ask if the recent earthquakes in Mayotte Island have influenced the reception here. Mayotte is on the path between EA and FR:
2018-05-19 02:20 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-19 01:50 EA5DOM 0.475608 -26 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-19 01:40 EA5DOM 0.475608 -27 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-19 01:30 EA5DOM 0.475608 -29 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-19
01:20 EA5DOM 0.475608 -26 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-19 00:50 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-19 00:30 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-19 00:00 EA5DOM 0.475608 -30 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-18
23:30 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-18 23:10 EA5DOM 0.475608 -20 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-18 22:50 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-18 22:30 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-18
22:20 EA5DOM 0.475608 -30 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-18 22:10 EA5DOM 0.475608 -27 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-18 22:00 EA5DOM 0.475608 -23 0 IM98xn 1 FR5DH LG78pw 8783 129 2018-05-18 21:10 EA5DOM 0.475608 -28 0 IM98xn 1 FR5DH LG78pw 8783 129
73, Pascal
