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Size: 22775
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← Revision 26 as of 2014-08-08 17:41:11 ⇥
Size: 25439
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 4: | Line 4: |
| This is by no means an exhaustive list of cities. It has most capitol cities, and extreme north/south cities for "tall" countries like the US, Canada, Russia, China, Chile, and Argentina. Numbers cribbed from Wikipedia. Just because the server sky orbit is briefly above the horizon at a far north latitude does not mean access is practical. Orbits go from southern horizon to southern horizon, and it is elevation that matters, especially at night when the arrays that are due south may be eclipsed and in darkness. |
|
| Line 10: | Line 14: |
| ||<-6:>'''Low Elevation, very high atmospheric attenuation''' || | ||<-6:>'''Very Low Elevation, very high atmospheric attenuation, huge antenna, brief availability - useless?''' || |
| Line 21: | Line 25: |
| || 54°41′N || Vilnius || Lithuania || 54°48′S || Ushuaia || Argentina || | || 55° || 5.3° elevation ||<-2> -48 dB attenuation ||<-2> x22000 relative attenuation || || 53°53′N || Edmondton || Canada || 54°48′S || Ushuaia || Argentina || || 54°41′N || Vilnius || Lithuania || |
| Line 27: | Line 33: |
| || 51°56′N || Rotterdam || Netherlands || 51°42′S || Stanley || United Kingdom || | || 51°56′N || Rotterdam || Netherlands || 51°42′S || Stanley || Falkland Islands || |
| Line 34: | Line 40: |
| ||<-6>'''Marginal elevation, significant atmospheric attenuation ''' || | ||<-6:>'''Marginal elevation, significant atmospheric attenuation, big antenna and sparse coverage''' || || 50° || 10.7° elevation ||<-2> -26 dB attenuation ||<-2> x120 relative attenuation || |
| Line 55: | Line 62: |
| || 45°58′N || Baikonur Cosmodrome || Kazakhstan || | |
| Line 60: | Line 68: |
| ||<-6>'''OK''' || | ||<-6:>'''OK - tolerable path loss, tolerable daytime availability''' || || 45° || 16.5° elevation ||<-2> -17 dB attenuation ||<-2> x17 relative attenuation || |
| Line 87: | Line 96: |
| || 40°58′N || Jiuquan Launch Center|| People's Republic of China || | |
| Line 92: | Line 102: |
| || 40° || 22.6° elevation ||<-2> -13 dB attenuation ||<-2> x6.0 relative attenuation || | |
| Line 97: | Line 108: |
| || 38°51′N || Taiyuan Launch Ctr || People's Republic of China || | |
| Line 101: | Line 113: |
| || 37°51′N || NASA Wallops Island || United States || | |
| Line 113: | Line 126: |
| || 35° || 29.2° elevation ||<-2> -10 dB attenuation ||<-2> x3.3 relative attenuation || | |
| Line 134: | Line 148: |
| || 31°15′N || Uchinoura Space Ctr || Japan || | |
| Line 137: | Line 152: |
| ||<-6>'''Good''' || | || 30°24′N ||Tanegashima Space Ctr || Japan || ||<-6:>'''Good - low path loss, small antennas, good daytime and nighttime availability ''' || || 30° || 36.3° elevation ||<-2> -8.3 dB attenuation ||<-2> x2.2 relative attenuation || |
| Line 144: | Line 161: |
| || 28°31′N || Kennedy Space Center || United States || | |
| Line 155: | Line 173: |
| || 25° || 44.0° elevation ||<-2> -7.1 dB attenuation ||<-2> x1.6 relative attenuation || | |
| Line 167: | Line 186: |
| || 21°19′N || Honolulu || United States || 20°53′S || Saint-Denis || France || | || 21°19′N || Honolulu || United States || 20°53′S || Saint-Denis || Réunion Isl, Indian Ocean || |
| Line 169: | Line 188: |
| || 20° || 52.2° elevation ||<-2> -6.2 dB attenuation ||<-2> x1.4 relative attenuation || | |
| Line 170: | Line 190: |
| || 19°34′N || Wenchang Launch Ctr. || People's Republic of China || | |
| Line 180: | Line 201: |
| || 17°25′N || Belmopan || Belize || 17°32′S || Papeete || France || | || 17°25′N || Belmopan || Belize || 17°32′S || Papeete || Tahiti || |
| Line 191: | Line 212: |
| || 15° || 61.0° elevation ||<-2> -5.6 dB attenuation ||<-2> x1.2 relative attenuation || | |
| Line 199: | Line 221: |
| || 13°43′N || Satish Dhawan Launch || India || | |
| Line 218: | Line 241: |
| || 10° || 70.4° elevation ||<-2> -5.2 dB attenuation ||<-2> x1.1 relative attenuation || | |
| Line 238: | Line 262: |
| || 06°55′N || Cayenne || French Guiana || | || 05°14′N || Guiana Space Centre || French Guiana || || 05° || 80.1° elevation ||<-2> -5.0 dB attenuation ||<-2> x1.0 relative attenuation || || 04°55′N || Cayenne || French Guiana || |
| Line 248: | Line 274: |
| ||<-6:>'''Too close to equator? Possible GEO, O3B interference''' || | ||<-6:>'''Too close to equator? Possible GEO, O3B uplink interference''' || |
| Line 254: | Line 280: |
| || 00° || 90.0° elevation ||<-2> -4.9 dB attenuation ||<-2> x1.0 relative attenuation || |
City Latitudes
Cities
This is by no means an exhaustive list of cities. It has most capitol cities, and extreme north/south cities for "tall" countries like the US, Canada, Russia, China, Chile, and Argentina. Numbers cribbed from Wikipedia.
Just because the server sky orbit is briefly above the horizon at a far north latitude does not mean access is practical. Orbits go from southern horizon to southern horizon, and it is elevation that matters, especially at night when the arrays that are due south may be eclipsed and in darkness.
Latitude |
City |
Country |
Latitude |
City |
Country |
Too Far North, negative elevation |
Too Far South, negative elevation |
||||
64°51′N |
Fairbanks |
United States |
|||
64°08′N |
Reykjavík |
Iceland |
62°12′S |
Villa Las Estrellas |
Chile |
61°13′N |
Anchorage |
United States |
|||
60°10′N |
Helsinki |
Finland |
|||
Very Low Elevation, very high atmospheric attenuation, huge antenna, brief availability - useless? |
|||||
59°57′N |
Oslo |
Norway |
|||
59°57′N |
Saint Petersburg |
Russia |
|||
59°26′N |
Tallinn |
Estonia |
|||
59°20′N |
Stockholm |
Sweden |
|||
58°18′N |
Juneau |
United States |
|||
56°57′N |
Riga |
Latvia |
|||
55°57′N |
Edinburgh |
United Kingdom |
|||
55°45′N |
Moscow |
Russia |
|||
55°41′N |
Copenhagen |
Denmark |
55°05′S |
Puerto Toro |
Chile |
55°01′N |
Novosibirsk |
Russia |
54°56′S |
Puerto Williams |
Chile |
55° |
5.3° elevation |
-48 dB attenuation |
x22000 relative attenuation |
||
53°53′N |
Edmondton |
Canada |
54°48′S |
Ushuaia |
Argentina |
54°41′N |
Vilnius |
Lithuania |
|||
53°21′N |
Dublin |
Ireland |
53°10′S |
Punta Arenas |
Chile |
52°31′N |
Berlin |
Germany |
|||
52°22′N |
Amsterdam |
Netherlands |
|||
52°14′N |
Warsaw |
Poland |
|||
52°08′N |
Saskatoon |
Canada |
|||
51°56′N |
Rotterdam |
Netherlands |
51°42′S |
Stanley |
Falkland Islands |
50°51′N |
Brussels |
Belgium |
51°38′S |
Río Gallegos |
Argentina |
50°49′N |
Portsmouth |
United Kingdom |
|||
50°27′N |
Regina |
Canada |
|||
50°27′N |
Kiev |
Ukraine |
|||
50°05′N |
Prague |
Czech Republic |
|||
50°04′N |
Kraków |
Poland |
|||
Marginal elevation, significant atmospheric attenuation, big antenna and sparse coverage |
|||||
50° |
10.7° elevation |
-26 dB attenuation |
x120 relative attenuation |
||
49°54′N |
Winnipeg |
Canada |
|||
49°37′N |
Luxembourg |
Luxembourg |
|||
49°15′N |
Vancouver |
Canada |
|||
48°51′N |
Paris |
France |
|||
48°47′N |
Stuttgart |
Germany |
|||
48°42′N |
Volgograd |
Russia |
|||
48°35′N |
Strasbourg |
France |
|||
48°13′N |
Vienna |
Austria |
|||
48°09′N |
Bratislava |
Slovakia |
|||
48°08′N |
Munich |
Germany |
|||
47°55′N |
Ulan Bator |
Mongolia |
|||
47°37′N |
Seattle |
United States |
|||
47°28′N |
Budapest |
Hungary |
|||
47°22′N |
Zürich |
Switzerland |
|||
47°14′N |
Rostov-on-Don |
Russia |
|||
46°57′N |
Bern |
Switzerland |
|||
46°49′N |
Quebec City |
Canada |
|||
46°28′N |
Odessa |
Ukraine |
46°25′S |
Invercargill |
New Zealand |
46°12′N |
Geneva |
Switzerland |
|||
46°03′N |
Ljubljana |
Slovenia |
|||
45°58′N |
Baikonur Cosmodrome |
Kazakhstan |
|||
45°49′N |
Zagreb |
Croatia |
|||
45°45′N |
Harbin |
People's Republic of China |
45°52′S |
Comodoro Rivadavia |
Argentina |
45°31′N |
Portland |
United States |
45°34′S |
Coihaique |
Chile |
45°30′N |
Montreal |
Canada |
|||
45°28′N |
Milan |
Italy |
|||
OK - tolerable path loss, tolerable daytime availability |
|||||
45° |
16.5° elevation |
-17 dB attenuation |
x17 relative attenuation |
||
44°59′N |
Minneapolis |
United States |
|||
44°51′N |
Halifax |
Canada |
|||
44°49′N |
Belgrade |
Serbia |
|||
44°26′N |
Bucharest |
Romania |
|||
43°56′N |
San Marino |
San Marino |
|||
43°51′N |
Sarajevo |
Bosnia and Herzegovina |
|||
43°44′N |
Monaco |
Monaco |
|||
43°42′N |
Toronto |
Canada |
|||
43°35′N |
Sochi |
Russia |
43°32′S |
Christchurch |
New Zealand |
43°18′N |
Marseille |
France |
|||
43°17′N |
Almaty |
Kazakhstan |
|||
43°08′N |
Vladivostok |
Russia |
|||
43°04′N |
Sapporo |
Japan |
|||
42°52′N |
Bishkek |
Kyrgyzstan |
42°53′S |
Hobart |
Australia |
42°42′N |
Sofia |
Bulgaria |
|||
42°30′N |
Andorra la Vella |
Andorra |
|||
42°26′N |
Podgorica |
Montenegro |
|||
42°21′N |
Boston |
United States |
|||
42°00′N |
Skopje |
Macedonia |
|||
41°54′N |
Rome |
Italy |
|||
41°53′N |
Chicago |
United States |
|||
41°49′N |
Shenyang |
People's Republic of China |
|||
41°43′N |
Tbilisi |
Georgia |
|||
41°20′N |
Tirana |
Albania |
|||
41°16′N |
Tashkent |
Uzbekistan |
|||
41°01′N |
Istanbul |
Turkey |
|||
40°58′N |
Jiuquan Launch Center |
People's Republic of China |
|||
40°51′N |
Naples |
Italy |
|||
40°40′N |
New York City |
United States |
|||
40°24′N |
Madrid |
Spain |
|||
40°24′N |
Baku |
Azerbaijan |
|||
40°11′N |
Yerevan |
Armenia |
|||
40° |
22.6° elevation |
-13 dB attenuation |
x6.0 relative attenuation |
||
39°54′N |
Beijing |
People's Republic of China |
|||
39°44′N |
Denver |
United States |
|||
39°01′N |
Pyongyang |
North Korea |
|||
38°55′N |
Dalian |
People's Republic of China |
|||
38°54′N |
Washington |
United States |
|||
38°51′N |
Taiyuan Launch Ctr |
People's Republic of China |
|||
38°43′N |
Lisbon |
Portugal |
|||
38°32′N |
Dushanbe |
Tajikistan |
|||
38°07′N |
Palermo |
Italy |
|||
37°56′N |
Ashgabat |
Turkmenistan |
|||
37°51′N |
NASA Wallops Island |
United States |
|||
37°47′N |
San Francisco |
United States |
|||
37°46′N |
Fukushima |
Japan |
|||
37°34′N |
Seoul |
South Korea |
|||
37°04′N |
Gaziantep |
Turkey |
|||
36°48′N |
Tunis |
Tunisia |
|||
36°46′N |
Algiers |
Algeria |
|||
36°20′N |
Mosul |
Iraq |
|||
36°08′N |
Gibraltar |
United Kingdom |
|||
35°54′N |
Valletta |
Malta |
34°53′S |
Montevideo |
Uruguay |
35°42′N |
Tehran |
Iran |
|||
35°41′N |
Tokyo |
Japan |
|||
35°10′N |
Nicosia |
Cyprus |
|||
35° |
29.2° elevation |
-10 dB attenuation |
x3.3 relative attenuation |
||
34°32′N |
Kabul |
Afghanistan |
34°36′S |
Buenos Aires |
Argentina |
34°05′N |
Srinagar |
India |
|||
34°03′N |
Los Angeles |
United States |
|||
34°02′N |
Rabat |
Morocco |
33°57′S |
Port Elizabeth |
South Africa |
33°53′N |
Beirut |
Lebanon |
33°52′S |
Sydney |
Australia |
33°43′N |
Islamabad |
Pakistan |
33°41′S |
Chuí |
Brazil |
33°31′N |
Damascus |
Syria |
|||
33°27′N |
Phoenix |
United States |
33°27′S |
Santiago |
Chile |
33°20′N |
Baghdad |
Iraq |
|||
32°54′N |
Tripoli |
Libya |
|||
32°47′N |
Dallas |
United States |
|||
32°43′N |
San Diego |
United States |
|||
32°32′N |
Tijuana |
Mexico |
|||
32°07′N |
Benghazi |
Libya |
|||
32°04′N |
Tel Aviv |
Israel |
|||
32°03′N |
Nanjing |
People's Republic of China |
|||
31°56′N |
Amman |
Jordan |
|||
31°47′N |
Jerusalem |
Israel |
|||
31°37′N |
Kandahar |
Afghanistan |
|||
31°36′N |
Kagoshima |
Japan |
|||
31°31′N |
Gaza |
Palestine |
|||
31°15′N |
Uchinoura Space Ctr |
Japan |
|||
31°12′N |
Alexandria |
Egypt |
|||
31°12′N |
Shanghai |
People's Republic of China |
|||
30°30′N |
Basra |
Iraq |
|||
30°24′N |
Tanegashima Space Ctr |
Japan |
|||
Good - low path loss, small antennas, good daytime and nighttime availability |
|||||
30° |
36.3° elevation |
-8.3 dB attenuation |
x2.2 relative attenuation |
||
30°00′N |
Cairo |
Egypt |
|||
29°58′N |
New Orleans |
United States |
|||
29°46′N |
Houston |
United States |
|||
29°34′N |
Chongqing |
People's Republic of China |
|||
29°22′N |
Kuwait City |
Kuwait |
29°19′S |
Maseru |
Lesotho |
28°37′N |
New Delhi |
India |
|||
28°31′N |
Kennedy Space Center |
United States |
|||
28°28′N |
Santa Cruz |
Tenerife |
|||
28°09′N |
Las Palmas |
Canary Islands |
|||
27°42′N |
Kathmandu |
Nepal |
27°28′S |
Brisbane |
Australia |
27°28′N |
Thimphu |
Bhutan |
26°29′S |
Manzini |
Swaziland |
26°13′N |
Manama |
Bahrain |
26°12′S |
Johannesburg |
South Africa |
25°47′N |
Miami |
United States |
25°58′S |
Maputo |
Mozambique |
25°41′N |
Luxor |
Egypt |
|||
25°17′N |
Doha |
Qatar |
25°17′S |
Asunción |
Paraguay |
25°15′N |
Dubai |
United Arab Emirates |
|||
25°04′N |
Nassau |
Bahamas |
25°04′S |
Adamstown |
Pitcairn |
25°02′N |
Taibei |
Republic of China (Taiwan) |
|||
25° |
44.0° elevation |
-7.1 dB attenuation |
x1.6 relative attenuation |
||
24°52′N |
Karachi |
Pakistan |
|||
24°38′N |
Riyadh |
Saudi Arabia |
24°39′S |
Gaborone |
Botswana |
24°34′N |
Key West |
United States |
|||
24°28′N |
Abu Dhabi |
United Arab Emirates |
|||
23°42′N |
Dhaka |
Bangladesh |
22°55′S |
Rio de Janeiro |
Brazil |
23°37′N |
Muscat |
Oman |
22°34′S |
Windhoek |
Namibia |
23°08′N |
Havana |
Cuba |
22°17′S |
Nouméa |
New Caledonia |
23°08′N |
Guangzhou |
People's Republic of China |
|||
22°34′N |
Kolkata (Calcutta) |
India |
|||
22°17′N |
Hong Kong |
People's Republic of China |
|||
21°28′N |
Cockburn Town |
Turks and Caicos |
|||
21°25′N |
Mecca |
Saudi Arabia |
21°08′S |
Nukuʻalofa |
Tonga |
21°19′N |
Honolulu |
United States |
20°53′S |
Saint-Denis |
Réunion Isl, Indian Ocean |
21°02′N |
Hanoi |
Vietnam |
20°10′S |
Port Louis |
Mauritius |
20° |
52.2° elevation |
-6.2 dB attenuation |
x1.4 relative attenuation |
||
19°42′N |
Hilo |
United States |
|||
19°34′N |
Wenchang Launch Ctr. |
People's Republic of China |
|||
19°26′N |
Mexico City |
Mexico |
|||
18°59′N |
Mumbai |
India |
18°56′S |
Antananarivo |
Madagascar |
18°48′N |
Chiang Mai |
Thailand |
|||
18°32′N |
Port-au-Prince |
Haiti |
|||
18°28′N |
Santo Domingo |
Dominican Republic |
|||
18°27′N |
San Juan |
United States |
|||
18°21′N |
Charlotte Amalie |
Virgin Islands |
|||
18°06′N |
Nouakchott |
Mauritania |
18°08′S |
Suva |
Fiji |
17°59′N |
Kingston |
Jamaica |
17°52′S |
Harare |
Zimbabwe |
17°58′N |
Vientiane |
Laos |
17°45′S |
Port Vila |
Vanuatu |
17°25′N |
Belmopan |
Belize |
17°32′S |
Papeete |
Tahiti |
17°18′N |
Basseterre |
Saint Kitts and Nevis |
|||
17°07′N |
St. John's |
Antigua and Barbuda |
|||
16°52′N |
Acapulco |
Mexico |
|||
16°48′N |
Yangon |
Burma |
16°30′S |
La Paz |
Bolivia |
16°00′N |
Basse-Terre |
Saint Kitts and Nevis |
15°55′S |
Jamestown |
Saint Helena |
15°38′N |
Khartoum |
Sudan |
15°48′S |
Brasília |
Brazil |
15°21′N |
Sana'a |
Yemen |
15°25′S |
Lusaka |
Zambia |
15°20′N |
Asmara |
Eritrea |
|||
15°18′N |
Roseau |
Dominica |
|||
15°11′N |
Saipan |
Saipan |
|||
15° |
61.0° elevation |
-5.6 dB attenuation |
x1.2 relative attenuation |
||
14°55′N |
Praia |
Cape Verde |
|||
14°42′N |
Dakar |
Senegal |
|||
14°37′N |
Guatemala City |
Guatemala |
|||
14°36′N |
Fort-de-France |
Martinique |
|||
14°35′N |
Manila |
Philippines |
|||
14°06′N |
Tegucigalpa |
Honduras |
14°17′S |
Pago Pago |
Pago Pago |
14°01′N |
Castries |
Saint Lucia |
13°59′S |
Lilongwe |
Malawi |
13°45′N |
Bangkok |
Thailand |
13°50′S |
Apia |
Samoa |
13°43′N |
Satish Dhawan Launch |
India |
|||
13°41′N |
San Salvador |
El Salvador |
|||
13°29′N |
Hagåtña |
Guam |
|||
13°27′N |
Banjul |
Gambia |
|||
13°09′N |
Kingstown |
St Vincent Grenadines |
|||
13°06′N |
Bridgetown |
Barbados |
|||
13°05′N |
Chennai (Madras) |
India |
|||
12°39′N |
Bamako |
Mali |
|||
12°31′N |
Oranjestad |
Aruba |
|||
12°21′N |
Ouagadougou |
Burkina Faso |
12°27′S |
Darwin |
Australia |
12°08′N |
Managua |
Nicaragua |
|||
12°07′N |
Willemstad |
Curaçao |
|||
12°07′N |
N'Djamena |
Chad |
|||
12°03′N |
St. George's |
Grenada |
12°03′S |
Lima |
Peru |
11°51′N |
Bissau |
Guinea-Bissau |
11°45′S |
Moroni |
Comoros |
11°35′N |
Djibouti |
Djibouti |
|||
11°33′N |
Phnom Penh |
Cambodia |
|||
10°46′N |
Ho Chi Minh City |
Vietnam |
|||
10°40′N |
Port of Spain |
Trinidad and Tobago |
|||
10°30′N |
Caracas |
Venezuela |
|||
10° |
70.4° elevation |
-5.2 dB attenuation |
x1.1 relative attenuation |
||
09°56′N |
San José |
Costa Rica |
|||
09°31′N |
Conakry |
Guinea |
09°31′S |
Port Moresby |
Papua New Guinea |
09°02′N |
Addis Ababa |
Ethiopia |
09°28′S |
Honiara |
Solomon Islands |
08°59′N |
Panama City |
Panama |
08°50′S |
Luanda |
Angola |
08°29′N |
Trivandrum |
India |
08°33′S |
Dili |
Timor-Leste |
08°29′N |
Freetown |
Sierra Leone |
08°31′S |
Funafuti |
Tuvalu |
07°22′N |
Koror |
Palau |
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07°04′N |
Majuro |
Marshall Islands |
|||
07°04′N |
Davao City |
Philippines |
|||
07°01′N |
Hat Yai |
Thailand |
|||
06°56′N |
Colombo |
Sri Lanka |
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06°55′N |
Palikir |
Micronesia |
|||
06°49′N |
Yamoussoukro |
Ivory Coast |
|||
06°48′N |
Georgetown |
Guyana |
|||
06°30′N |
Porto-Novo |
Benin |
|||
06°27′N |
Lagos |
Nigeria |
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06°19′N |
Monrovia |
Liberia |
06°12′S |
Jakarta |
Indonesia |
06°08′N |
Lomé |
Togo |
06°10′S |
Dodoma |
Tanzania |
05°52′N |
Paramaribo |
Suriname |
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05°33′N |
Accra |
Ghana |
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05°14′N |
Guiana Space Centre |
French Guiana |
|||
05° |
80.1° elevation |
-5.0 dB attenuation |
x1.0 relative attenuation |
||
04°55′N |
Cayenne |
French Guiana |
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04°53′N |
Bandar Seri Begawan |
Brunei |
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04°51′N |
Juba |
South Sudan |
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04°36′N |
Bogotá |
Colombia |
04°37′S |
Victoria |
Seychelles |
04°22′N |
Bangui |
Central African Republic |
04°20′S |
Kinshasa |
Dem Rep Congo |
04°11′N |
Malé |
Maldives |
04°16′S |
Brazzaville |
Republic Congo |
03°52′N |
Yaoundé |
Cameroon |
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03°45′N |
Malabo |
Equatorial Guinea |
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03°09′N |
Kuala Lumpur |
Malaysia |
03°23′S |
Bujumbura |
Burundi |
02°02′N |
Mogadishu |
Somalia |
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Too close to equator? Possible GEO, O3B uplink interference |
|||||
01°26′N |
South Tarawa |
Kiribati |
01°57′S |
Kigali |
Rwanda |
01°17′N |
Singapore |
Singapore |
01°17′S |
Nairobi |
Kenya |
00°23′N |
Libreville |
Gabon |
00°33′S |
Yaren District |
Nauru |
00°20′N |
São Tomé |
São Tomé and Príncipe |
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00°19′N |
Kampala |
Uganda |
00°15′S |
Quito |
Ecuador |
00° |
90.0° elevation |
-4.9 dB attenuation |
x1.0 relative attenuation |
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