Message-ID: <006701d0f981$8a5ca850$6401a8c0@JAYDELL>
From: <jrusgrove@comcast.net>
To: <rsgb_lf_group@blacksheep.org>
References: <0MNdxu-1Zl3vu0oLy-007AvH@mail.gmx.com> <5603CC31.2000401@posteo.de> <560508B4.6000303@posteo.de> <258E2E67F0754FC2B833F8C44E2EA246@White> <56080126.2050308@charter.net> <06070BD781874171BA8119364F7CFF48@gnat>
Date: Sun, 27 Sep 2015 20:06:35 -0400
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Subject: Re: LF: First MF TA since a longer time
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Status: O

Alan

Note that reception here is never better than at Dave's with his ocean front location. During 
optimum conditions (for me) I can get close to his displayed s/n receptions. Many times I just have 
no reception at all.

Jay W1VD  WD2XNS  WE2XGR/2

----- Original Message ----- 
From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Sunday, September 27, 2015 12:22 PM
Subject: Re: LF: First MF TA since a longer time


> Thank you John......those details tend to confirm the comment I made to Graham. the results from 
> different receivers are dependent on their location. This is ratherwhy I suggested that one 
> receiving station monitoring two or more senders. It would seem that if the ground conditions are 
> that important then variation amongst different stations, then the signals might have a portion of 
> the wave arriving via ground scatter......effectively a form of grounnd following wave. Otherwise 
> I cannot see that the ground coductivity would have such different effects. I am assuming that the 
> mail mode "ground bounce" about 2000km down range from the receiver is over water in all cases??
>
> There is an argument that Graham made that suggests that even with one receiving station there 
> would be similar effects at the transmitting end.....more variables demands more data :-))
>
> Are there instances when John 'XKA and Jay receive better signals than Dave and John 'TAG ....or 
> are they always worse??
>
> The background to this is my re-analysis of my 9 months of measurements of CFH in 2003. They 
> plainly show that good nights occur with a Dst of more than -50nT and never occur if the Dst is 
> less than -60nT. However having a night with say (the magic :-))  ) -20nT does not guarantee good 
> signals. Selecting nights with around -20nT I cannot find any correlation with any other 
> parameter, and the spread is quite large......but this is all on one fixed path.  Sorry about the 
> obsessive return to this but difficult problems are the hardest to leave. :-))
>
> Thanks for all your comments they are all absorbed.
>
> Best Wishes
> Alan
> G3NYK
>
>
> ----- Original Message ----- 
> From: "John Andrews" <w1tag@charter.net>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Sunday, September 27, 2015 3:45 PM
> Subject: Re: LF: First MF TA since a longer time
>
>
>> After one quiet night, the MF TA activity increased last night. Dave, AA1A (WD2XSH/17) had 4 
>> spots on DK7FC from 0124 to 0234Z, and 3 spots on DF6NM from 0234 to 0314Z. I (W1TAG/1) had 3 
>> spots on DK7FC from 0204 to 0234Z, and 2 spots on DF6NM from 0254-0314Z. Jay, W1VD (WE2XGR) had 
>> no TA spots, but good results to the west.
>>
>> For Alan's head-scratching, Dave lives right on the Massachusetts coast, about 200 km south of 
>> me. His path to EU does not have the overland component that I do in southern (inland) Maine. Jay 
>> is 330 km southwest of me, and has a considerable overland path to EU. We all live in an area 
>> with very poor ground conductivity. The path to John, WG2XKA in Vermont, who is 200 km west of 
>> me, is also more difficult.
>>
>> Anyway, for the moment the best propagation appears to be in the 0200-0300Z range, so if you have 
>> shut down and gone to bed by that point, you may miss out. All of this could change in a day, 
>> however!
>>
>> John, W1TAG/1
>>
>
>