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On the program today:
- Telecommunications satellites
- Radio calendar
- Broadcast tips
- DX Mix by Ivo Ivanov
Many radio stations air programs on short and medium wave not only from the respective country but also via transmitters in other countries. Broadcasts of various stations from across the world can be listened to on the Internet. These and many other activities in telecommunications have become possible owing to the telecommunications satellites either circulating round the Earth or fixed at certain points above the Equator. By the early 1960s communication between radio transmission centers across the world took place via cable, via networks of broadcast relay stations or in other ways. On 4 Oct. 1957 the first artificial satellite of the Earth (Sputnik) was launched by the Soviet Union. On 10 July 1962 the US launched into orbit the first telecommunications satellite called Telstar 1 equipped for reception and re-broadcasting of radio and television programs, of phone calls and telegraph messages etc. With an elliptic orbit approaching the Earth at 952 km and getting away from it at 5632 km that facility laid the beginnings of a new era in communications. Another facility had the same role – the Syncom 2 satellite launched in equatorial or also known as circle or geostationary orbit, on 26 July 1963 at a height of about 35,760 km above the surface of the Earth. This orbit was described for the first time by Herman Potochnik in 1928 but became widely known in 1945 thanks to novelist Arthur Clark who suggested using it for global radio and television broadcasting. The geostationary orbit is located at some 36,000 km above the Equator and its length is 265,000 km. Any body found on that orbit is in gravity equilibrium versus gravitation from the Sun, the Earth and the Moon. Besides, if it travels with the angular speed of rotation of the Earth, this body or this satellite will be found permanently in the same point above a certain region of the planet. In this way it can be used to air round-the-clock radio signals to the same place of the Earth. Today the geostationary satellites carry out a huge number of communications. They are equipped with generators or with solar panels for electric energy, because they receive and broadcast an enormous amount of information. Dozens of geostationary satellites hang between 105 degrees western longitude and 75 degrees eastern longitude. In Bulgaria radio and television programs from that orbit are received with dishes put on roofs or balconies with signals coming from the Greek satellite Hellas 2 and from other satellites. Describing the communications satellites we should not forget the ones with elliptic orbits, for instance the ones used by Russia for signal coverage of polar areas. For the purpose they have at least three satellites so as to provide around-the-clock signal. There are also systems for direct reception of radio programs from the satellites Worldspace, Sirius, XM etc. (The big hit in the chart in 1962 was the melody "Telstar" by the Tornados).
Radio calendar
On 3 July 1966 the BBC Relay Station from Ascension opened broadcasts. On 4 July 1950 was the launch of Radio Free Europe from Munich, and on 6 July 1937 – of Radio Nacional Argentina.
Broadcast tips
VIETNAM & CANADA: Radio Voice of Vietnam was heard with a program in English from a transmitter located in Canada, from 03.30 hrs on 6175 kHz.
GERMANY: Radio Voice of Germany or Deutsche Welle was received after 09.00 hrs with a program in English on 15640 and 17820 kHz, from transmitters in Singapore and Sri Lanka respectively.
RUSSIA: Radio Voice of Russia World Service in English was heard with a weak signal after 06.00 hrs on 15405 kHz from a transmitter in Kamsamolsk na Amure and after 09.00 hrs on15170 kHz from Chita .
USA: The new radio station WTWW from Tennessee was heard at 05.30 hrs on 12100 kHz with a Christian religious program in English.
YEMEN: Radio Sanaa was heard with emotional speeches, military marches and news in Arabic at 12.00 hrs on 9780 kHz.
SWAZILAND: Trans World Radio English Language Service to Africa was heard with Christian religious programs at 05.30 and 06.10 hrs on 9500 KHz from a transmitter in Swaziland.
Compiled by Rumen Pankov
DX MIX
All times in Universal Time Coordinated (UTC), all frequencies in kilohertz (kHz).
Romania: In this edition we bring you the summer schedule of Radio Romania International:
- in Arabic
0630-0657 on 11730, 11790, 15180 and 15400
1400-1457 on 11830, 11945, 15160 and 15490
-in Romanian
1430-1457 on 7340
1630-1657 on 5980
1830-1857 on 5920
-in Chinese
0400-0427 on 15530 DRM and on 17780
1300-1327 on 15435 17600
-in English
0000-0057 on 7385 and 9580
0300-0357 on 7335, 9645, 11895 and 15340
0530-0557 on 7305 DRM, 9655, 17760 and 21500
1100-1157 on 15210, 15430, 17510 and 17670
1700-1729 on 7350 DRM
1700-1757 on 9535 DRM and 11735
2030-2057 on 9765 DRM, 11880, 11940 and 13800
2200-2257 on 5960, 7435, 9790 and 11940
-in French
0100-0157 on 7385 and 9570
0500-0527 on 11810 DRM, 9655, 15340 and 17770
1000-1057 on 11830, 15240, 15380 and 17785
1600-1657 on 9680 and 11950
2000-2027 on 9655 DRM and 11970
-in German
0600-0627 on 7230 DRM and 9740
1200-1257 on 9675 and 11875
1600-1629 on 7460 DRM
1800-1857 on 7240 and on 9495 DRM
-in Italian
1400-1427 on 9800
1600-1627 on 9610
1800-1827 on 7425 DRM
-in Romanian
0000-0057 and 0100-0157 on 7355 and 9525
0400-0457 on 9770 and 11920
0700-0757 on Sunday on 9700, 11970, 15270 and 17720
0800-0857 on Sunday on 11870, 11970, 15450 and 15700
0900-0957 on Sunday on 11830, 15240, 15380 and 17600
1200-1357 on 11920 and 15195 and from 7300 to 1257
1500-1557 on 9855 and 11895
1600-1657 on 9690 and 11825
1700-1957 on 11970 and 15310
-in Russian
0430-0457 on 7390 DRM and 9800
1330-1357 on 11835 и 15140
1500-1557 on 9690 and on 11615 DRM
-in Serbian
1530-1557 on 6025
1730-1757 and 1930-1957 on 6125
-in Spanish
0200-0257 on 7400, 9520, 9645 and 11945
1900-1957 on 9700 and 11715
2100-2157 on 9755 and 11965
2300-2357 on 9655, 9745, 11795 and 11955
-in Ukrainian
1500-1527 on 5945
1700-1727 on 6135
1900-1927 on 5910
Written by Ivo Ivanov, Frequency Manager of Radio Bulgaria
Translated by Daniela Konstantinova
- Telecommunications satellites
- Radio calendar
- Broadcast tips
- DX Mix by Ivo Ivanov
Many radio stations air programs on short and medium wave not only from the respective country but also via transmitters in other countries. Broadcasts of various stations from across the world can be listened to on the Internet. These and many other activities in telecommunications have become possible owing to the telecommunications satellites either circulating round the Earth or fixed at certain points above the Equator. By the early 1960s communication between radio transmission centers across the world took place via cable, via networks of broadcast relay stations or in other ways. On 4 Oct. 1957 the first artificial satellite of the Earth (Sputnik) was launched by the Soviet Union. On 10 July 1962 the US launched into orbit the first telecommunications satellite called Telstar 1 equipped for reception and re-broadcasting of radio and television programs, of phone calls and telegraph messages etc. With an elliptic orbit approaching the Earth at 952 km and getting away from it at 5632 km that facility laid the beginnings of a new era in communications. Another facility had the same role – the Syncom 2 satellite launched in equatorial or also known as circle or geostationary orbit, on 26 July 1963 at a height of about 35,760 km above the surface of the Earth. This orbit was described for the first time by Herman Potochnik in 1928 but became widely known in 1945 thanks to novelist Arthur Clark who suggested using it for global radio and television broadcasting. The geostationary orbit is located at some 36,000 km above the Equator and its length is 265,000 km. Any body found on that orbit is in gravity equilibrium versus gravitation from the Sun, the Earth and the Moon. Besides, if it travels with the angular speed of rotation of the Earth, this body or this satellite will be found permanently in the same point above a certain region of the planet. In this way it can be used to air round-the-clock radio signals to the same place of the Earth. Today the geostationary satellites carry out a huge number of communications. They are equipped with generators or with solar panels for electric energy, because they receive and broadcast an enormous amount of information. Dozens of geostationary satellites hang between 105 degrees western longitude and 75 degrees eastern longitude. In Bulgaria radio and television programs from that orbit are received with dishes put on roofs or balconies with signals coming from the Greek satellite Hellas 2 and from other satellites. Describing the communications satellites we should not forget the ones with elliptic orbits, for instance the ones used by Russia for signal coverage of polar areas. For the purpose they have at least three satellites so as to provide around-the-clock signal. There are also systems for direct reception of radio programs from the satellites Worldspace, Sirius, XM etc. (The big hit in the chart in 1962 was the melody "Telstar" by the Tornados).
Radio calendar
On 3 July 1966 the BBC Relay Station from Ascension opened broadcasts. On 4 July 1950 was the launch of Radio Free Europe from Munich, and on 6 July 1937 – of Radio Nacional Argentina.
Broadcast tips
VIETNAM & CANADA: Radio Voice of Vietnam was heard with a program in English from a transmitter located in Canada, from 03.30 hrs on 6175 kHz.
GERMANY: Radio Voice of Germany or Deutsche Welle was received after 09.00 hrs with a program in English on 15640 and 17820 kHz, from transmitters in Singapore and Sri Lanka respectively.
RUSSIA: Radio Voice of Russia World Service in English was heard with a weak signal after 06.00 hrs on 15405 kHz from a transmitter in Kamsamolsk na Amure and after 09.00 hrs on15170 kHz from Chita .
USA: The new radio station WTWW from Tennessee was heard at 05.30 hrs on 12100 kHz with a Christian religious program in English.
YEMEN: Radio Sanaa was heard with emotional speeches, military marches and news in Arabic at 12.00 hrs on 9780 kHz.
SWAZILAND: Trans World Radio English Language Service to Africa was heard with Christian religious programs at 05.30 and 06.10 hrs on 9500 KHz from a transmitter in Swaziland.
Compiled by Rumen Pankov
DX MIX
All times in Universal Time Coordinated (UTC), all frequencies in kilohertz (kHz).
Romania: In this edition we bring you the summer schedule of Radio Romania International:
- in Arabic
0630-0657 on 11730, 11790, 15180 and 15400
1400-1457 on 11830, 11945, 15160 and 15490
-in Romanian
1430-1457 on 7340
1630-1657 on 5980
1830-1857 on 5920
-in Chinese
0400-0427 on 15530 DRM and on 17780
1300-1327 on 15435 17600
-in English
0000-0057 on 7385 and 9580
0300-0357 on 7335, 9645, 11895 and 15340
0530-0557 on 7305 DRM, 9655, 17760 and 21500
1100-1157 on 15210, 15430, 17510 and 17670
1700-1729 on 7350 DRM
1700-1757 on 9535 DRM and 11735
2030-2057 on 9765 DRM, 11880, 11940 and 13800
2200-2257 on 5960, 7435, 9790 and 11940
-in French
0100-0157 on 7385 and 9570
0500-0527 on 11810 DRM, 9655, 15340 and 17770
1000-1057 on 11830, 15240, 15380 and 17785
1600-1657 on 9680 and 11950
2000-2027 on 9655 DRM and 11970
-in German
0600-0627 on 7230 DRM and 9740
1200-1257 on 9675 and 11875
1600-1629 on 7460 DRM
1800-1857 on 7240 and on 9495 DRM
-in Italian
1400-1427 on 9800
1600-1627 on 9610
1800-1827 on 7425 DRM
-in Romanian
0000-0057 and 0100-0157 on 7355 and 9525
0400-0457 on 9770 and 11920
0700-0757 on Sunday on 9700, 11970, 15270 and 17720
0800-0857 on Sunday on 11870, 11970, 15450 and 15700
0900-0957 on Sunday on 11830, 15240, 15380 and 17600
1200-1357 on 11920 and 15195 and from 7300 to 1257
1500-1557 on 9855 and 11895
1600-1657 on 9690 and 11825
1700-1957 on 11970 and 15310
-in Russian
0430-0457 on 7390 DRM and 9800
1330-1357 on 11835 и 15140
1500-1557 on 9690 and on 11615 DRM
-in Serbian
1530-1557 on 6025
1730-1757 and 1930-1957 on 6125
-in Spanish
0200-0257 on 7400, 9520, 9645 and 11945
1900-1957 on 9700 and 11715
2100-2157 on 9755 and 11965
2300-2357 on 9655, 9745, 11795 and 11955
-in Ukrainian
1500-1527 on 5945
1700-1727 on 6135
1900-1927 on 5910
Written by Ivo Ivanov, Frequency Manager of Radio Bulgaria
Translated by Daniela Konstantinova
FUENTE: DX Program July 1, 2011 http://bit.ly/lJUEnC
IMAGEN : criaturacreativa.com
Via Yimber Gaviria, Colombia
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