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Radio fax transmission - Patent 4933770 (2174 words) |
 | Disclosed is an audio-to-radio and radio-to-audio signal converter and method for interfacing a facsimile machine with a radio transmitter-receiver having a microphone input, an audio output and a push-to-talk relay. |
| The audio-to-radio and radio-to-audio converters 10 interface a pair of FAX machines 12 with a pair of conventional transmitter-receivers 13, each having a transmitter circuit 14 including a microphone input 15, a push-to-talk relay (PTT) 16, a receiver circuit 17 having an audio output, and an antenna 18. |
| Converter 10 also provides a fourth circuit means 29 which produces a nulling signal 30 to the second circuit means 24 upon receipt of an audio input signal 27. |
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Facsimile converter - definition of Facsimile converter in Encyclopedia (93 words) |
| In telecommunication, the term facsimile converter has the following meanings: |
| In a facsimile receiver, a device that changes the signal modulation from frequency-shift keying (FSK) to amplitude modulation (AM). |
| In a facsimile transmitter, a device that changes the signal modulation from amplitude modulation (AM) to frequency-shift keying (FSK). |
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