If mentioned "radio" is indispensable to mention the name of "freedom, general, Lord chatchai the. 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, installed at the flower palace in Bangkok to testing research testing a say. And the sound of music with a radio transmitter phone like radio broadcasting.Department of the กำแพงเพ็ชร foremost warriors
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.The division of radio technician, post and telegraph Department has conducted radio broadcasting. Using a small phone transmitter at the location of the radio technician in the office building, the Department of postal and Telegraph (old).The side bridge'll metropolitan division radio technician post and telegraph department. Send technological Yu broadcasting on a regular basis since the 31 May. B.Professor 2471 onwards, radio broadcasting in the initial stage, size, high frequency about 8 000 kilo เฮิ business.'s 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) to perform at radio station Sala Daeng. And change the frequency estimation, 10100 kHz. Use the call sign that 2 p. J.(HS 2 PJ) experiment in early radio broadcasting, with high frequency, the results indicated that listen to ในระยะทาง near. In the area of nearby provinces such as Bangkok, seldom works, because a fade, division of radio and telegraph department.The call sign, "one one P.J."(HS 1 1 P J).Effects of listening to appear to have better when using high frequency radio waves are used the size medium frequency for radio broadcasting in the radio broadcasting with a frequency used for radio สูงคง distributed se.Only by reputation abroad appear to people and popular interest listen to the radio together more.Using the receiver type ore and tube type small 2-3 tube. The radio technician, post call number. It has established a permanent radio station on the Thung Phaya Thai Bangkok building air delivery in the field.The room on the second floor of the hotel send broadcast centre operated created by the Gleason (current as the phramongkutklao hospital, army). Radio broadcast transmitter. This new A machine purchase from the company PhilipsThere are 2 denervation together, sending the plane, 2500 watts, one machine using the frequency 857 kHz. With the name "radio station," located in Bangkok. "Thung Phaya Thai" use call sign that h. S. P. J.(HS PJ) and another one is the high frequency machines. Use radio processing machine (modulator) the same machine. Therefore sent with both air. A first radio station in Thailand
.The post and telegraph department have assembled the radio station radio technician opening ceremony of the first permanent national Thai on Wednesday 25 February. BCThe 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 continue. To improve the forming machine send you a new one. Send a test item sector in the country.At the University, and is often a Wednesday night on Saturday night. The radio frequency, 12 foreign sector000 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 cable.
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