If mentioned "radio" is indispensable to mention the name of God ", he burachat chaiya organizations. The Department of the prime minister กำแพงเพ็ชร office, Ministry of Commerce and transportation in the reign 7.Because he is a pioneer. The initiative has experiments in radio broadcasting for the first time in B.Prof.2470 had bought a radio transmitter phone type tubes 3 electrode using high frequency (shortwave) are sent around 200 watts, install the Palace Flower. In Bangkok to testing research testing a talk and music.Melody radio broadcasting. The first time that Thailand is radio broadcasting with a pioneering initiative. Of the share the กำแพงเพ็ชร akkarin yothin
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.The division of radio technician, post and telegraph Department has conducted radio broadcasting. Using a small phone transmitter being sent around 200 Watt at the location of such radio in the office building of post and telegraph department. (old).In front of the temple, was restored (วัดเลียบ), which has broken down. To create the Phra Pok klao bridge parallel to the side of the bridge.'ll metropolitan division radio and telegraph department, radio broadcasting a routine.31 May B.Professor 2471 onwards, radio broadcasting in the initial stage, size, high frequency about 8000 kHz (also known as short wave wavelengths about 37 meters) are export air 200 watts. Use the call sign (Call. Sign) station that 4 P. J.(HS 4 PJ) later, the radio technician, post and telegraph department business has moved from the post and telegraph Department experimental radio broadcasting building (old) canal basin jar P. wat ratburana (วัดเลียบ) operations at the radio station Sala Daeng.10.100 kHz (wavelength 29.5 meters) are sent 500 watts. Use the call sign that 2 p. J.(HS 2 PJ) experiment in early radio broadcasting, with high frequency (or ham) this ปรากฏผล that listen in closer. In the area of nearby provinces such as Bangkok, seldom works, because a fade.The change was sent with a frequency of medium. (or so called long wave in those days) size frequency about 937.5 kHz or wavelength 320 meters force sent 1 000 watts, call sign, that "one, one, P. J."(HS 1 1 P J) appear to have the effect of listening better when using high frequency radio waves are used the size medium frequency for the domestic radio broadcasting The radio broadcasting with high frequency.The appear. The public interest and popular more and more by listening to radio receiver type ore and tube type small 2-3 tube pile, the capacity factor Post and telegraph department.Bangkok, the transmitter in the field in front of hotel, (the same is วังพญาไท) the room on the second floor of the hotel send broadcast centre The building by the Gleason (now the phramongkutklao hospital.Radio broadcast transmitter. This new As the machine purchased from Philips, the Netherlands has 2 denervation together, sending the plane, 2500 watts, one machine used 857 kHz frequency (wavelength 350 meters) are called "radio station in Bangkok." (radio department. Bangkok at payathai) located "Thung Phaya Thai" use call sign, H. S. P. J.(HS PJ) and another one is the high frequency machine (shortwave) use radio processing machine (modulator) the same. Therefore, sending both machines.
the radio technician. The post and telegraph department have assembled the opening of this radio station first permanent delaminate when Wednesday 25 FebruaryThe memorial day, 2473 coronation In the reign of King Prajadhipok Rama 7 by broadcast speech up the coronation. From the throne, and รินทร diagnosis in the Grand Palace, Bangkok.
."Radio has started to be held. The experiment all along. Also with the intention to promote education and entertainment to the merchant trade people.And now like a loudspeaker well to set the radio telegraph, finished. We have ordered to launch an inaugural from now on "
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the radio broadcasting of radio technician, post and telegraph department from radio stations Saladaeng still continue. Improve build new transmitter is sent, 10000 watts. 750 kHz frequency (wavelength 400 meters) using the call sign that 7 P. J.(HS7 PJ) send a test item sector in the country. Part time send the broadcasting of radio Bangkok, Phaya Thai (that is, when the radio station, Bangkok. ที่พญาไท closed.) and is often a Wednesday night on Saturday night.12.000 kHz (wavelength 25 meters) using the call sign, "8 p. J." (HS 8 PJ) sent from the radio station Red Pavilion till it's all taken care of on 1 April. BCThe government has ordered the transfer 2482 business radio from the post and telegraph department. Depending on the office, the office of the prime minister (and later have a wider กรมโฆษณาการ. And later changed its name to the public relations department).Operation of domestic radio The radio station, Bangkok, Phaya Thai, so depending on advertising office all
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radio broadcast in abroad. With high frequency of experimental radio station 8 p. J.(HS 8 PJ), Sala Daeng, Bangkok, must be transferred but staff of radio programs. Division is about the room send broadcast and machine.
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