[SADXA] RESEND - VK0EK Heard Island Propagation Question - from Bill W7EXG

[rsoifer1 at aol.com]

Bill,


I worked VK0EK on 30 CW at 1305 on March 24th.  Does that count as grayline?


73 Ray W2RS (Green Valley)



-----Original Message-----
From: W7EXG (Bill) <W7EXG at q.com>
To: 'Southern AZ DX Association E-Mail Reflector' <sadxa at mailman.qth.net>
Sent: Sat, Sep 10, 2016 8:19 pm
Subject: Re: [SADXA] RESEND - VK0EK Heard Island Propagation Question - from Bill W7EXG

Thanks Wes.

With you in mind, I developed a very simple formula criteria and graphic
defining TRUE Gray-line Propagation window for any two stations adjacent to
the terminator at opposite time zones.   (TRUE meaning ALL propagation
within the Gray-line Twilight Zone) This will be shown in my October
presentation to the SADXA group. It will clearly show that NONE of the
Tucson PM propagation to Heard was TRUE Gray-line propagation. However, the
data will also show that in the morning, prior to Tucson Sunrise, TRUE
Gray-line propagation conditions existed, with the time window being a
function of the date. 

This will clearly differentiate the Gray-line Propagation as a sub-set of
Terminator Enhanced Propagation. For Heard, Terminator Enhanced Propagation
occurred mostly after Sunrise and always after Sunset Tucson Time. 

Your RTTY observation was more of a Terminator Enhanced Propagation, due to
lower D and lower E conditions and HIGH MUF less than 1 hour AFTER Tucson
Sunset, and Low D, Low E and increasing MUF about 1 hour AFTER Heard
Sunrise.   

Jerry, W6XI, may have the ONLY TRUE Gray-line QSO for the group. His 13:02
30m contact with HEARD on 4/5 was completely within the Twilight Region and
was only 4 min. before Tucson Sunrise. Hi Hi. W6XI may WIN "The Great Heard
Island TRUE Gray-line Propagation Prize"! Or GHITGLPP for short!! I am
looking for someone who will share this VERY coveted Prize with Jerry. 

73s, 

Bill W7EXG
 

-----Original Message-----
From: SADXA [mailto:sadxa-bounces at mailman.qth.net] On Behalf Of Wes Stewart
Sent: Saturday, September 10, 2016 5:39 PM
To: sadxa at mailman.qth.net
Subject: Re: [SADXA] RESEND - VK0EK Heard Island Propagation Question - from
Bill W7EXG

Not me.

BTW, I did log an RTTY QSO on 30-meters at 0237Z our time but sadly they
logged 
N6WS.

On 9/10/2016 3:16 PM, W7EXG (Bill) wrote:
> SORRY - COULD BE CONFUSION
> 	- LOOKING FOR VK0EK CONTACTS 30 min before Sunrise.
>
> QUESTION:
> 	For VK0EK Heard Island Enthusiasts
> FROM:
> 	Bill W7EXG
>
> RE: Heard Island Gray-line Propagation
>
> Did anyone work Heard Island [VK0EK] in the Morning within 30 minutes
> BEFORE Tucson Sunrise?
>
> I did NOT see anyone suggest a VK0EK contact on Reflector during this
time.
>
> If so, could you please provide me with your contact data?
>
> I am working on the October SADXA Tucson/Heard Island propagation
> Presentation - PART-2, and this data would have value.
>
> PS: Jerry [W6XI] privately reported a 30m contact 4 Min. before Sunrise on
> 4/5 UTC.
>
> Best 73s, and THANKS!
>
> Bill W7EXG
>
>

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