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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: RR Stefan.  FB on your 2011 &2012 2200m achievements!      Yes, re pre-sunriseinvolvement--the FR5DH receptions of EA5DOM 0230 & 0236z were about 25 and 19minutes prior to FR5 sunrise 0255z (locally 6:55a.m. UTC+4).  Much appreciated your prop insig [...] Content analysis details: (-0.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [74.6.128.84 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (mrsocion[at]aol.com) 0.0 HTML_MESSAGE BODY: HTML included in message -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain X-Scan-Signature: efdc09b6b31095aa2dc5c6d2552910d5 X-SA-Exim-Scanned: No; SA Timed out after 180 secs Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false ------=_Part_673307_1338498920.1561942152116 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable RR Stefan. =C2=A0FB on your 2011 &2012 2200m achievements! =C2=A0=C2=A0=C2=A0=C2=A0 Yes, re pre-sunriseinvolvement--the FR5DH receptio= ns of EA5DOM 0230 & 0236z were about 25 and 19minutes prior to FR5 sunrise = 0255z (locally 6:55a.m. UTC+4).=C2=A0 Much appreciated your prop insights. =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Food for thought items:=C2=A0 Estimate of pr= e-SR geometry of MF E-regionbulged downward at 5=C2=B0 tilt and then less a= s time went on.=C2=A0 http://njdtechnologies.net/041217/=C2=A0.=C2=A0 There= may be variation of the tiltvalue with latitude.=C2=A0 I=E2=80=99m at 35= =C2=B0N wheremy 2017 data was taken.=C2=A0 Reunion is 21=C2=B0S, soEarth an= d E-region moves faster beneath the sun than where I am,=C2=A0and pre-SR=C2= =A0E-regiontilt was probably a little less than 5=C2=B0 max there.=C2=A0SR = at E-region altitude is pre-SR at ground level.=20 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 EA5DOM LF path probablyarrives roughly= 45=C2=B0 NW at FR5DH while 6/30/19 SR heading is 65=C2=B0 NE at FR5DH.=C2= =A0 The terminator is within 20=C2=B0 of parallel witha great circle (?)=C2= =A0radio path.=C2=A0=C2=A0The 3D geometry becomes complicated but calculabl= e. =C2=A0We can expect=C2=A0an SR enhancement, however,=C2=A0to includelate= ral skew off the bulging pre-SR LF E-region and combine with=C2=A0a "regula= r"2200m ray direction=C2=A0as the rays descend into Reunion Is.=C2=A0The pr= e-SR E-region bulge will probably have some texture, so more rays might als= o beinvolved.=C2=A0 At the=C2=A0long wavelength 2200m, the texture would ne= ed to be quite extended, however, compared to 630m.=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0FR5DH 630mreception 2010-0140z in May, 2018, was midnight to= =C2=A0wee hours, i.e., withoutinvolvement of pre-SR enhancement. http://njd= technologies.net/052018/=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0As= to=C2=A06/30/19, =C2=A02200m pre-SRenhancement=C2=A0probably involved the = last hop only, due to shallow tilt,=C2=A0but I'd need ray tracing/calc=C2= =A0to check. =C2=A0If chordal prop occurred overAfrica, it likely was a spa= tially separate phenomenon. =C2=A0=C2=A0Eventhough a certain account of las= t night=E2=80=99s 2200m prop may elude us, I see it as acombination of poss= ible chordal hop over Africa augmented by pre-SR enhancementof the rays on = a subsequent=C2=A0final hop.=C2=A0 And yes, what would be an accurate estim= ate of transmitted power density...=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Sum= mer fun & wakeupexperience, yes! TU & 73 Jim H=C2=A0 W5EST ------=_Part_673307_1338498920.1561942152116 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
RR Stefan.  FB on your 2011 & 2012 2200m achievements!
     Yes, re pre-sunrise involvement--the FR5DH receptions of EA5DOM 0230 & 0236z were about 25 = and 19 minutes prior to FR5 sunrise 0255z (locally 6:55a.m. UTC+4).  Much appreciated your prop insights.=
      Food for thought= items:  Estimate of pre-SR = geometry of MF E-region bulged downward at 5=C2=B0 tilt and then less as time went on.  http://njdtechnologies.net/0412= 17/  .  There may be variation of= the tilt value with latitude.  I=E2= =80=99m at 35=C2=B0N where my 2017 data was taken.  Reu= nion is 21=C2=B0S, so Earth and E-region moves faster beneath the sun than where I am, and p= re-SR E-region tilt was probably a little less than 5=C2=B0 max there.  SR at E-region altitude is pre-SR at ground level.
       EA5DOM LF = path probably arrives roughly 45=C2=B0 NW at FR5DH while 6/30/19 SR heading is 65=C2=B0 N= E at FR5DH.  The terminator = is within 20=C2=B0 of parallel with a great circle (?) radio path.  The 3D geometry becomes complicated but calculable.  We can expect an SR enhancement= , however, to include lateral skew off the bulging pre-SR LF E-region and combine with a "re= gular" 2200m ray direction as the rays descend into Reunion Is.  The pre-SR E-region bulge will probably have some texture, so more r= ays might also be involved.  At the long wavelen= gth 2200m, the texture would need to be quite extended, however, compared t= o 630m.
       F= R5DH 630m reception 2010-0140z in May, 2018, was midnight to wee hours, i.e<= /em>., without involvement of pre-SR enhancement. http://njdtechnologies.= net/052018/ 
       As to=  6/30/19,  2200m pre-SR enhancement probably involved the last hop only, due to shallow tilt,&= nbsp;but I'd need ray tracing/calc to check.  If chordal prop occurred over Africa, it likely was a spatially separate phenomenon.   Even though a certain account of last night=E2=80=99s 2200m prop may elude us, I= see it as a combination of possible chordal hop over Africa augmented by pre-SR enhance= ment of the rays on a subsequent final hop.  And yes, what would be an= accurate estimate of transmitted power density...
       Summer fun= & wakeup experience, yes! TU & 73 Jim H = W5EST
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