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Bitmap Image  |  1994-04-22  |  106.1 KB  |  540x450  |  8-bit (104 colors)
   ocr: RADIO TRANSMITTER MICROPHONE HE - - SOUNDS from a radio station reach - means.ofaradio transmitter. ANTENNA you by Theelectrical signal from a microphone combines with a high frequency carrier signal. This. altered, or modulated, signal producés radio waves at the antenna of SOUND at transmitter. The waves spread in all SIGNAL directions, like ripples : in a pond. A radio receiver tuned into the frequency of the carrier wave recreates. the original sound. RADIO WAVES - LL An L - MODULATOR RADIO TRANSMITTER - LOn - - - - - - - - - - - - ho - KA a ASEE - a - 1 - - 4 - RADIO RECEIVER - Modulation ...