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The design of data transmission is made with the intention of later as media data delivery AFTN at low cost, utilizing the network provider using the GSM GATEWAY will get a solution to the problem of how to transmit data AFTN when an aerodrome does not have the means of VSAT and the airport does not have a network AFTN. The working principle of this circuit is to change the output signal DB9 serial port on the teleprinter news format ITA2 (5n1) is converted to the module MAX3232 to bedoi:10.46491/jp.v3e1.36.71-80 fatcat:33r5ljsxqjfubf2nnbtaqnhkni