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DX Program 18.02.2011
On the program:
- Standard Time And Frequency Transmissions
- Radio transmission forecast
- Radio calendar
- Broadcast tips
- DX Mix by Ivo Ivanov .
Radio listeners have heard the strange pip and beep signals from their receivers, most frequently on frequencies like 5 000 and 10 000 KHz and others. Those signals are often accompanied by a voice, reading the time in UTC, the former Greenwich Mean Time or GMT. Those transmissions come from the radio stations for Standard Time And Frequency Transmissions or STFT stations. The transmissions are used for synchronizing various types of equipment, for checking radio connections with satellites, etc. Special transmitters using fixed frequencies are used. Listeners could use these frequencies to check if their receivers are well calibrated. Also one can have the most accurate time by tuning to these stations. Some of these stations have published addresses and send QSL cards to listeners. Some of the transmitters of these stations work non-stop, while others are active for a few hours a day. The signals usually last 100 milliseconds, as 61 signals are transmitted in a minute, plus six additional pulses at the end of every hour. The signals can also contain code, for example related to the difference between atomic and astronomical time.
The International Telecommunication Union has defined frequencies to be used for these activities. For example, radio transmissions to satellites are on 25 KHz in combination with 400.1 MHz. There are 16 organizations from 19 countries that use STFT transmitters. There is such an organization that helps navigation in Russia, Belarus and Kyrgyzstan, while transmitters in Colorado and Hawaii are used by the US. The power of transmitters also varies - 100 watts in Espoo, Finland to 1 000 kW in Allois, France. Every transmitter has an identification code in voice or Morse code. For example in Argentina it is LOL, HBG is for Switzerland etc. Countries that use STFT are Canada, USA, Argentina, Brazil, Ecuador, Venezuela, China, Japan, Republic of Korea, Germany, Spain, United Kingdom and those already mentioned. 7 countries use only long waves, while 8 use just short waves. Three countries use both. The most used frequencies are 5 000 and 10 000 kHz on which 5 different transmitters work. The pip signals are best heard on 5 000 kHz after sunset, while 10 000 and 15 000 kHz are best heard during the day.
Increase in the solar activity is expected during the coming days, as the solar wind from the coronal holes on the Sun will cause magnetic disturbances. Among the 40 to 60 existing sunspots, the AR1158 spot poses a threat of C-flares directed towards the earth, Disturbances in short-wave reception are expected during the coming week.
Coming up is our radio calendar. On February 12, the Vatican Radio celebrates its 80th anniversary. Radio Luxembourg and the Italian Radio Relay Service were launched in 1932 and 1989, while on the same date in 1950, the European Broadcasting Union was established. On February 13, 1982 the first private radio station in the US started. This was WRNO New Orleans. On February 15 Radio Australia marks 55 years of short-wave transmission.
Broadcast Tips :
RWANDA: Radio Rwanda was heard with news in English from 18.30 to 18.45 hours, followed by sports news in French on 6065 kHz.
SWAZILAND: Trans World Radio from Manzini was heard with two different programmes in English from 18.00 to 19.00 hours. One was on 3200 KHz with web page www.twr.org announced, while the other was on 9500 KHz with address P.O. Box 21314, 00505 Nairobi, Kenya.
UAE and USA: The Eternal Good News Radio transmitting only on Friday from 11.30 to 11.45 on 15525 KHz from the United Arab Emirates was heard on February 11 with a programme in English and address P.O. Box 5333, Edmond Ok73083 USA.
EGYPT: Radio Cairo has restored short-wave transmissions and was heard in English at 03.15 hours on 6270 KHz on February 9.
YEMEN: Radio Sana'a with a programme in Arabic was heard after 06.00 hours on 6135 and 9780 KHz and 6135 KHz.
ЕTHIOPIA: On February 7 Radio Ethiopia Home Service was heard with a programme in English at 12.00 hours on 9705 KHz from a transmitter in China and their External Service from 16.00 hours on 9560 and 7235 KHz.
Author: Rumen Pankov
DX MIX
All hours in Universal Time Coordinated (UTC), all frequencies in kHz.
UK: In today's edition of DX Mix we present you the first part of the winter schedule of the radio stations, using BACOCK transmitters.
Voice of Vietnam
-on 6175 Sackville 250 kW / 212 deg. for North America
0100-0130, 0230-0300 и 0330-0400 in English; 0130-0230 in Vietnamese; 0300-0330 and 0400-0430 in Spanish
-on 6175 Sackville 250 kW / 240 deg. for North America
0430-0530 in Vietnamese
-on 5955 Moosbrunn 100 kW / 300 deg for Western Europe
1800-1830 in English; 1830-1930 in Vietnamese and 1930-2000 in French
2000-2030 on 5970 Woofferton 250 kW / 075 deg. for Russia in Russian
2030-2130 on 3985 Skelton 250 kW / 121 deg for Western Europe in German
2130-2230 on 7370 Woofferton 250 kW / 105 deg for Southern Europe in Vietnamese
Adventist World Radio in Vietnamese
0100-0200 on Saturday on 15445 Taipei 100 kW / 250 deg. for Southeastern Asia
Sudan Radio Service for Eastern Africa
-on 13720 Al-Dhabbaya 250 kW / 245 deg.
0400-0500 in Arabic and 0500-0600 in Arabic and English
-on 17745 Sines 250 kW / 114 deg
1500-1530 in English and 1530-1700 in Arabic
-on 17700 Ascension 250 kW / 65 deg. 1600-1700 in Arabic
-on 9840 Al-Dhabbaya 300 kW / 240 deg. According to the following schedule:
1700-1730 from Monday to Friday in the Dinka, Zande, Muro, Bari and Shiluk vernaculars and on Saturday and Sunday in Arabic and 1730-1800 daily in English
Radio Canada International
0400-0500 on 7265 Skelton 300 kW / 110 deg. for Middle East in Arabic
1700-1730 on 9555 Rampisham 250 kW / 48 deg. and on 11935 Woofferton 250 kW / 78 deg for Russia in Russian
1900-2000 on 9510 Skelton 250 kW / 177 deg. for Central Africa and on 11845 Skelton 300 kW / 195 deg. for Western Africa in French
Radio Okapi in French and Lingala
0400-0500 on 11690 Meyerton 250 kW / 340 deg. in direction towards Congo
Radio Damal / The Voice of Somali People in Somali for Eastern Africa
0400-0500 on 15700 Al-Dhabbaya 250 kW / 225 deg
0500-0700 on 15700 and 1930-2130 on 11970 Al-Dhabbaya 250 kW / 205 deg
1830-1930 on 11740 Woofferton 300 kW / 122 deg
Author: Ivo Ivanov Frequency Manager of Radio Bulgaria
English: Alexander Markov
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