[OKDXA] Amsterdam Island -- The Most Distant DX Location from W5
Robert Redmon
k5sm.bob at gmail.com
Mon Nov 25 11:58:07 EST 2013
Maybe that explains why I only have Amsterdam Is on one band (20)!
On 11/25/2013 9:17 AM, W5LE wrote:
> 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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>
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--
Robert Redmon K5SM
AMA 58073
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