_____
From: Matt Lee, K4AQ [mailto:Matt at HiWAAY.net]
Sent: Tuesday, June 05, 2007 23:06
To: 'ku8e'
Cc: South East Contest Club; John Laney K4BAI; Hal Kennedy N4GG
Subject: SECC_2007_175-mi_circle_Nr01 RE: [SECC] SECC Circle Proposal
(I am cc'ing K4BAI and N4GG direct just in case the SECC reflector does not
allow non-text email.)
Jeff KU8E,
As I mentioned before when we discussed this circle exercise on the
reflector, unless we know where the SECC members are located, this "moving
the circle thing" may be invalid. Some addresses will come up on the map
centered on the post office, zip code or center of their city. For location
accuracy of members who operate their stations near the edge of the circle,
e.g., K4BAI (175 mi), N4GG (163.5 mi), K2SX (175 mi) and K4DLJ (162 mi), we
need their Lat/Long coordinates.
The software I am using is Microsoft MapPoint 2004.
Note: MapPoint maps are based on the WGS 84 (World Geodetic System 1984)
datum. Some maps and GPS (Global Positioning Satellite) systems are based on
other datums. Latitude and longitude coordinates obtained from a map or GPS
system based on another datum may appear in a different place on MapPoint
maps.
Therefore, if a GPS is used to obtain a member's coordinates, the GPS must
be configured to use the WGS-84 datum if I am to plot it on MapPoint. (There
are map datum conversion programs available if someone wants to convert
non-WGS-84 to WGS-84 datum values.)
The 175-mi radius circle that is drawn on the maps below is centered near
Birdsville, GA on the county line that you referenced.
The first map is an overview (zoomed out); the second map shows the detail
of where the center is centered; the third map zooms in on Pawley Island (to
illustrate how the circle may easily miss K2SX's QTH...the magenta curve is
the 175-mi circle).
Center of circle coordinates:
* Lat: 32.87225 deg N
* Lon: 82.12780 deg W
Map #1: Circle overview <SECC_2007_175-mi-circle_Nr01.ptm>
Map #2: Middle of the circle detail <SECC_2007_175-mi-circle_Nr01.ptm>
Map #3: Part of Pawley Island, SC is "outside the SECC proposed circle." The
circle center is to the left of the magenta line.
<SECC_2007_175-mi-circle_Nr01.ptm>
Additional comments inserted below in BLUE.
--
Matt Lee, K4AQ
Atlanta, Georgia
-----Original Message-----
From: secc-bounces at contesting.com [ <mailto:secc-bounces at contesting.com>
mailto:secc-bounces at contesting.com] On Behalf Of ku8e
Sent: Tuesday, June 05, 2007 21:05
To: secc at contesting.com
Subject: [SECC] SECC Circle Proposal
I don't have a mapping program but I do have Google Earth. I played around
with the measuring tool and found a good location that might
work for us. The center would be near the county line of southwest Burke
County and northwest Jenkins County, GA. Closest town is Birdsville, GA
I bet no one has ever explored the circle being in this part of GA.
Yes we did...in our last "circle" exercise.
If you draw a line from Columbus, GA (K4BAI) to Pawley Island, SC (K2SX) it
is exactly 350 miles (1/2 of 175 miles)
Was the beginning line centered on K4BAI's actual QTH or the Columbus, GA
map reference point? Ditto for K2SX/Pawley Island, SC?
Using this center the club circle would cover most of GA except the extreme
Northwest (up to Bartow County)
...just PART of BARTOW county...
and Southwest parts of the state. It would also cover most of South
Carolina. The following big cities would be within our circle :
Jacksonville, FL , Charlotte, NC (just south) and Savannah, GA.
Only parts of Jacksonville and Charlotte will be in the circle. The EXACT
circle center will have to be adjusted, depending on actual member station
locations.
The 250 mile CQ circle looks even better. Plus I don't think we would lose
any of our current members excpt those in Al.
Are there any Tennesee members in the SECC needing to be in this circle?
Here are some distances for current members of SECC :
K4BAI - Columbus 175. miles
W4OC- Boiling Springs, SC 150.09 miles
AA4GA - Cornelia, GA 139 miles
N4GG - Woodstock, GA 163.5 miles
W4BQF - Hahira,GA 150 miles
KF4GTA - Valdosta, GA 157 miles
K4EA - Canton, GA 167 miles
KT4ZB - Savannah, GA 81 miles
WY4N - Bamburg, SC 61 miles
Potential New Members
(Contesters active in SC found in ARRL contest results)
K2SX - Pawley Island , SC 175 miles
K3AN - Salem, SC 146 miles
WA8OJR - Spartenburg, SC 142 miles
AA4V - Isle of Palms, SC 135 miles
K4DLJ - Darlington, SC 162 miles
W0AH (now K4LY) Inman, SC 150 miles
K4CNW Irmo, SC 98 miles
Jeff KU8E
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