Es on 15 and 10m

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satnipper
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Es on 15 and 10m

Post by satnipper » 14 Apr 2019 14:21

Short skip Es on 15 and 10m in southern Occitania. 6m still shut here though open elsewhere in places.

Stuart

Jim (Bournemouth)
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Re: Es on 15 and 10m

Post by Jim (Bournemouth) » 14 Apr 2019 15:47

Yes, some light Es has been popping up from time to time in recent days.

6m beam going back up next weekend.
Jim, Bournemouth, Dorset. IO90BR.

Elad FDM-S2, Perseus/FM+, Airspy HF+, SDRPlay, Funcube Dongle SDR Rx; 8-ele OP-DES for Band 2, 8-ele LFA 2m, 3 ele LFA for 6m, 20/15/10m dipole, VHF vertical
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dxradiofan
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Re: Es on 15 and 10m

Post by dxradiofan » 15 Apr 2019 18:43

I didn't think Es affected 15m but ok !

satnipper
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Re: Es on 15 and 10m

Post by satnipper » 15 Apr 2019 21:45

Sporadic E appears on 20m as well

theme
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Re: Es on 15 and 10m

Post by theme » 16 Apr 2019 06:48

How long till it appears on Band II?😏
Probably scanning the band atm. And definitely moaning about the conditions.

Tim Bucknall
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Re: Es on 15 and 10m

Post by Tim Bucknall » 17 Apr 2019 09:05

Had e on 12mhz one summer night in 1992
Heard radio fax on 12255,
Wish I’d thought to check fm!

Where does e start?
I used to think it started around 35mhz and spread out from there
Rx: Burkhardt Reuter RDR54D1, Elad FDM-S2, Airspy HF+ w/ CLP 5130 Log P ant on rooftop rotator V/H polarization options. Pira P275 RDS analyser

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John Faulkner, Skegness
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Re: Es on 15 and 10m

Post by John Faulkner, Skegness » 18 Apr 2019 11:25

It's like tropo. I had tropo on 27 MHz once. There will be a theoretical upper and lower limit, but extreme circumstances can bring about surprises. Look at our near 1000 km tropo/aircraft scatter. 800 km is supposed to be the absolute max.

satnipper
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Re: Es on 15 and 10m

Post by satnipper » 18 Apr 2019 11:30

"Where does e start?
I used to think it started around 35mhz and spread out from there"

I think Es start low and move upwards. There is an Es MUF which is totally different to the normal F layer MUF.

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John Faulkner, Skegness
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Re: Es on 15 and 10m

Post by John Faulkner, Skegness » 18 Apr 2019 11:32

That's how I have always understood it too, Stuart. Don't the maps show Es starting way down at 14 MHz? I'm sure I've seen this many times.

dxradiofan
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Re: Es on 15 and 10m

Post by dxradiofan » 18 Apr 2019 12:28

Tim Bucknall wrote:
17 Apr 2019 09:05
Had e on 12mhz one summer night in 1992
Heard radio fax on 12255,
Wish I’d thought to check fm!
Hmm talking about radio fax here's a rec I made in 1989 !

https://youtu.be/xsAlijCiplo

satnipper
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Re: Es on 15 and 10m

Post by satnipper » 18 Apr 2019 12:30

John Faulkner, Skegness wrote:
18 Apr 2019 11:32
That's how I have always understood it too, Stuart. Don't the maps show Es starting way down at 14 MHz? I'm sure I've seen this many times.
Yes - actually 17m this week has been interesting mixture of E and F2 propagation.

Jim (Bournemouth)
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Re: Es on 15 and 10m

Post by Jim (Bournemouth) » 18 Apr 2019 13:35

AS you get lower in frequency, it gets harder to tell what is Es and what is F2, especially at times of higher solar activity.
20m at any time of year would be hard to tell, but 15m into e.g. Spain or central Europe now would definitely be Es.
Jim, Bournemouth, Dorset. IO90BR.

Elad FDM-S2, Perseus/FM+, Airspy HF+, SDRPlay, Funcube Dongle SDR Rx; 8-ele OP-DES for Band 2, 8-ele LFA 2m, 3 ele LFA for 6m, 20/15/10m dipole, VHF vertical
.

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satnipper
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Re: Es on 15 and 10m

Post by satnipper » 18 Apr 2019 14:09

This is where FT8 is so great. In a sunspot minimum on 17 or 21 MHz when you see Argentina/Paraguay/Wales and Scotland decoded on your screen you know you've got a double whammy of SpE/F2. Go fill those band slots young man!

Tim Bucknall
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Re: Es on 15 and 10m

Post by Tim Bucknall » 19 Apr 2019 13:33

Its all hamilton academical now for me with my local qrn problems on HF

John! Come over here and lets do some props studies on upper hf - low vhf on hilltops!
Rx: Burkhardt Reuter RDR54D1, Elad FDM-S2, Airspy HF+ w/ CLP 5130 Log P ant on rooftop rotator V/H polarization options. Pira P275 RDS analyser

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John Faulkner, Skegness
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Re: Es on 15 and 10m

Post by John Faulkner, Skegness » 19 Apr 2019 20:31

If only I could. Would be great to stick some metal up in the air. One day soon. Will give you a call one day soon. Just need to get bank holiday out of the way.

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