[OKDXA] Amsterdam Island -- The Most Distant DX Location from W5
W5LE
w5le at beggstelco.net
Mon Nov 25 10:17:42 EST 2013
Wow, Roger, what a ton of very good information. I'm sure this will be
helpful to everyone chasing FT5ZM. Thanks for all the time and effort
involved in this research.
73, Gene
On 11/25/2013 8:13 AM, Roger Simpson wrote:
> Working FT5ZM from QTHs in Oklahoma
> Roger Simpson -- K5RKS
> 25 Nov 2013 -- V1.1
>
> The FT5ZM DXpedition will be operating from the Martin des Viviers
> Base which on on the northern shore of Amsterdam Island. According
> to the FT5ZM website, the operation will be using two cabins
> which are about 5800 feet apart. According to the FT5ZM website
> the cabins are located as follows:
>
> Mataf Cabin South 37 deg 47 min; East 77 deg 34 min
> Antonelli Cabin South 37 deg 48 min; East 77 deg 32 min
>
>
> CHART 1
>
> The following chart gives the azimuth and distance to FT5ZM from
> various places in or near Oklahoma. This chart is sorted based upon
> the short path azimuth.
>
> Location Azimuth to FT5ZM Distance to FT5ZM
> [degrees] [statute miles]
> Short Long Short Long
> Path Path Path Path
> -------------------------------------------------------------------------
>
> Cheyenne Wells CO 5.9 185.9 12371 12512
> Garden City KS 79.6 259.6 12362 12521
> Wichita KS 94.2 274.2 12166 12717
> Tulsa OK 109.7 289.7 12066 12817
> Enid OK 110.9 290.9 12177 12707
> Muskogee OK 111.8 291.8 12028 12855
> Stillwater OK 112.8 292.8 12125 12758
> Woodward OK 118.9 298.9 12252 12631
> Oklahoma City OK 122.0 302.0 12119 12764
> Liberal KS 123.2 303.2 12341 12542
> Lawton OK 135.5 315.5 12130 12753
> Altus OK 142.5 322.5 12161 12723
> Guymon OK 145.3 325.3 12350 12534
> Amarillo TX 168.6 348.6 12266 12617
> Boise City OK 182.2 2.2 12366 12517
> Santa Fe NM 232.1 52.1 12202 12682
> Raton NM 241.1 61.1 12313 12571
> La Junta CO 276.9 96.9 12377 12506
> Denver CO 314.4 134.4 12245 12638
> Lamar CO 333.7 153.7 12421 12462
>
> ** Antipode SE of Lamar CO *any* *any* 12442 12442
>
>
> CHART 2
>
> COORDINATES OF LOCATIONS USED IN TABLE ABOVE
> all Latitudes are degrees North of the equator
> all Longitudes are degrees West of Greenwich
>
> Oklahoma City OK Lat = 35.4167; Long = 97.4250;
> Tulsa OK Lat = 36.1250; Long = 95.9625;
> Guymon OK Lat = 36.6917; Long = 101.4750;
> Lawton OK Lat = 34.6375; Long = 98.4375;
> Stillwater OK Lat = 36.1250; Long = 97.0875;
> Muskogee OK Lat = 35.76; Long = 95.4;
> Boise City OK Lat = 36.6917; Long = 102.4875;
> Lamar CO Lat = 38.05; Long = 102.6;
> Wichita KS Lat = 37.6; Long = 97.4;
> Liberal KS Lat = 37.0; Long = 100.9;
> La Junta CO Lat = 37.9; Long = 103.6;
> Cheyenne Wells CO Lat = 38.8; Long = 102.3;
> Garden City KS Lat = 38.0; Long = 101.0;
> Raton NM Lat = 36.9; Long = 104.5;
> Woodward OK Lat = 36.5; Long = 99.4;
> Enid OK Lat = 36.5; Long = 97.9;
> Amarillo TX Lat = 35.3; Long = 101.8;
> Altus OK Lat = 34.6; Long = 99.3;
> Denver CO Lat = 39.8; Long = 105.0;
> Santa Fe NM Lat = 35.7; Long = 105.9;
>
> Note: In most cases the coordinates above are expressed to the nearest 0.1
> degree of Latitude and Longitude
>
>
> As can be seen from the CHART 1 above, the paths will be very different between
> various QTHs in Oklahoma to Amsterdam Island. Both the short and long path from one
> location in Oklahoma may be radically different than either the short or
> long path from some other place in Oklahoma.
>
> To take an extreme case, consider Boise City OK compared to Tulsa OK.
>
> # From Boise City the path is either north [long path] or south [short path].
> # From Tulsa the path is either slightly south of due east [short path] or
> slightly north of due west [long path].
>
> All four of these paths are different in terms of continents and oceans they
> traverse between Oklahoma and Amsterdam Island.
>
> 1. a) The short path from Boise City leaves the USA over Presidio TX, passes over Tahati, and then crosses Antartica.
>
> 1. b) The long path from Boise City leaves the USA over Minot ND, passes north of Greenland, and traverses Kazakhstan.
>
> 2. a) The short path from Tulsa leaves the USA over Jacksonville FL and then passes over the southern tip of Africa
> near Capetown.
>
> 2. b) The long path from Tulsa leaves the USA over Crescent City CA and then passes over Papua New Guinea.
>
> This situation is due to the fact that the antipode for Amsterdam Island is close to us here is Oklahoma. The
> antipode location is in the SE corner of Colorado, about 15 miles SE of Lamar.
>
> If you drill straight down through the earth from anywhere in the continental 48 states of the USA you will
> come out of the other side of the earth dripping wet because you will be in the Indian Ocean. There is,
> however, one exception to this. The exception is that if you drill down from a unique location
> near Lamar Colorado, you will hit dry gound when you come out of your worm hole. The dry gound where you
> emerge is Amsterdam Island.
>
> Here are a couple of islands in the Indian ocean and the locations of their antipodes:
> 1. Crozet: Antipode is in the Pacific Ocean west of Oregon.
> 2. Kerguelen: Antipode is in Southeastern Alberta about 18 miles north of the USA-Canada border.
>
> ############################################################################
> ############################################################################
>
> Directions to reach the antipode points for the two cabins at Martin des Viviers Base.
>
> You should have a GPS unit and a vehicle that can handle dirt county roads. I recommend using the
> following USGS 7.5 minute quad maps for navigation:
> Barrel Spring COLORADO
> Two Buttes Reservoir COLORADO
> Gobblers Knob COLORADO
>
> When you start traveling on dirt roads I recommend taking way-points with your GPS so you don't get lost.
>
> 1. Go to Lamar, Colorado
>
> 2. Proceed east on Highway 50 from the intersection of South Main Street and Olive Street in downtown Lamar.
>
> 3. Travel east approximately 11 miles until you see a pair of grain bins on the north side of the
> highway next to the railroad tracks. You are now in beautiful downtown Carlton, Colorado.
>
> 4. Continue east for another 1/4 mile. You are now at the intersection of Highway 50 and County Road 19.
> County road 19 is paved going north across the railroad tracks. It is not paved going south.
>
> 5. Turn south on County road 19. You are now travelling on dirt roads.
>
> 6. Proceed for about 16 or 17 miles until you reach a T with a road going east and west. The east/west road is
> County Road N.
>
> 7. Turn right on County Road N. Travel west on County Road N until there is a road that you can turn left on.
> You will have traveled about 1/2 mile.
>
> 8. Turn left. You are now going south. Your are on the continuation of County Road 19.
>
> 9. Cross the cattle gaurd after about 2000 feet.
>
> 10. After crossing the cattle gaurd continue traveling south for about a half a mile.
>
> 11. You will come to the ford of Middle Plum Creek which is hopefully dry. If the road
> is flooded at this point you may not be able to continue.
>
> 12. Continue south for about 1.9 miles until your GPS says that your latitude is
> North 37 deg 47 minutes.
>
> The antipode point for the Mataf Cabin is to the west of you about 0.8 miles {i.e. approx 4000 feet}.
> You may not be able to hike to the Mataf antipode because it is in the middle
> of a terraced wheat field which is likely fenced in.
>
> COORDINATES FOR ANTIPODE FOR MATAF CABIN: NORTH 37 deg 47 min; WEST 102 deg 26 min
>
> 13. Continue south on County Road 19. After traveling south for about 0.6 miles you will come to a road.
> You are now at the intersection of County Road 19 and County Road K. You are at the Southeast corner
> of the terraced wheat field. The terraced wheat field is a square mile in size.
>
> 14. Turn right onto County Road K. You are now going west.
>
> 15. Travel west on County Road K until the longitude on your GPS indicates West 102 degrees 28 min.
> From this point the antipode for the Antonelli cabin is about 1.8 miles due
> north. If you want to go to the exact antipode point you will have to determine if it is possible to hike
> to the location or navigate there with a 4WD vehicle. It is likely that this is private property
> which may be fenced.
>
> COORDINATES FOR ANTIPODE FOR ANTONELLI CABIN: NORTH 37 deg 48 min; WEST 102 deg 28 min
>
> 16. Now you can return back to civilization by reversing your route to get back to Highway 50. Or you can follow step
> 17 below.
>
> 17. Directions to get to Highway 287: Continue west on County Road K until you reach a "T". This will be in about 4.35
> miles. Turn left (south) at the "T" onto County Road 12. Travel south 2 miles to County Road H. Turn right (west)
> onto County Road H. Travel west on County Road H for 3 miles and you will reach Highway 287. At this point
> there will be two rows of windmills [7 windmills per row] – each row running east and west -- to the south of you.
>
> Note: The coordinates for the two cabins are taken from the FT5ZM website.
> These coordinates are likely rounded off to the nearest arc minute.
> Taking the coordinates as stated on the website, results in the two cabins being
> about 11,500 feet apart -- thus the antipodes are also about 11,500 feet apart.
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