LF: EA5DOM-->FR5DH MF spots

To:	"[email protected]" <[email protected]>
Subject:	LF: EA5DOM-->FR5DH MF spots
From:	VIGILANT Luis Fernández <[email protected]>
Date:	Fri, 25 May 2018 08:40:50 +0000
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Thread-topic:	EA5DOM-->FR5DH MF spots

Hi MF

Last night two unique decodes from Pascal, FR5DH. There were no decodes since may 21th

2018-05-25 01:30	EA5DOM	0.475608	-30	0	IM98xn	1	FR5DH	LG78pw	8783	129
2018-05-24 22:30	EA5DOM	0.475608	-26	0	IM98xn	1	FR5DH	LG78pw	8783	129

The DST has been high this days but there were many Solar X ray flares untill this settle down yesterday

Almost one moth for solstice and counting ! ;-)

73 de Luis

EA5DOM

De: [email protected] [mailto:[email protected]] En nombre de VIGILANT Luis Fernández
Enviado el: lunes, 21 de mayo de 2018 10:47
Para: [email protected]
Asunto: LF: RV: EA5DOM-->FR5DH 16spots last night

Hi MF

On more night of good conditions as DST keeps up http://wdc.kugi.kyoto-u.ac.jp/dst_realtime/presentmonth/

2018-05-21 01:20 EA5DOM 0.475608 -31 0 IM98xn 1 FR5DH LG78pw 8783 129

2018-05-21 00:20 EA5DOM 0.475608 -29 0 IM98xn 1 FR5DH LG78pw 8783 129

2018-05-20 23:50 EA5DOM 0.475608 -30 0 IM98xn 1 FR5DH LG78pw 8783 129

2018-05-20 23:40 EA5DOM 0.475608 -30 0 IM98xn 1 FR5DH LG78pw 8783 129

2018-05-20 23:10 EA5DOM 0.475608 -24 0 IM98xn 1 FR5DH LG78pw 8783 129

2018-05-20 23:00 EA5DOM 0.475608 -29 0 IM98xn 1 FR5DH LG78pw 8783 129

73 de Luis

EA5DOM

De: [email protected] [mailto:[email protected]] En nombre de VIGILANT Luis Fernández
Enviado el: domingo, 20 de mayo de 2018 13:08
Para: [email protected]
Asunto: LF: Re: EA5DOM-->FR5DH 16spots last night

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

De: [email protected] [[email protected]] en nombre de Pascal Deveaux [[email protected]]
Enviado: sábado, 19 de mayo de 2018 7:50
Para: [email protected]
Asunto: LF: EA5DOM-->FR5DH 16spots last night

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

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