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2. DESCRIPTION A. VHF capability — refer to 23-11-00 The VHF capability system ensures : — the interphone function between the pilot and the passenger R.H. front station and rear passengers, — the amplification of communication and navigation audio signals applied to the cabin headsets and loudspeaker, — the operation of the radiocommunication means. B. COM 1 installation — refer to 23-12-00 This is the first VHF installation which uses voice—modulated electromagnetic waves to transmit and / or receive air—to—air or air—to—ground messages. C. COM 2 installation — refer to 23-13-00 This is the second VHF installation which uses voice—modulated electromagnetic waves to transmit and / or receive air—to—air or air—to—ground messages. D. COM 3 installation — refer to 23-14-00 This is the UHF installation which uses voice—modulated electromagnetic waves to transmit and / or receive air—to—air or air—to—ground messages. PAGE INTENTIONALLY LEFT BLANK AAAA Validity : COM 1 — COM 2 — COM 3 (UHF) 23-10-00Page 2 (BA) DEC 99 SPEECH COMMUNICATIONS DESCRIPTION AND OPERATION 1. GENERAL The speech communication system allows establishing air—to—ground or air—to—air liaisons. A low frequency communication system makes it possible to operate the radiocommunication means. The speech communication system includes : — the VHF capability, — the COM 1 installation, — the COM 2 installation. 2. DESCRIPTION A. VHF capability — refer to 23-11-00 The VHF capability system ensures : — the interphone function between the pilot and the passenger R.H. front station and rear passengers, — the amplification of communication and navigation audio signals applied to the cabin headsets and loudspeaker, — the operation of the radiocommunication means. B. COM 1 installation — refer to 23-12-00 This is the first VHF installation which uses voice—modulated electromagnetic waves to transmit and / or receive air—to—air or air—to—ground messages. C. COM 2 installation — refer to 23-13-00 This is the second VHF installation which uses voice—modulated electromagnetic waves to transmit and / or receive air—to—air or air—to—ground messages. ABAB Validity : COM 1 — COM 2 23 10-00Page 1 (CA) DEC 99 PAGE INTENTIONALLY LEFT BLANK SPEECH COMMUNICATIONS DESCRIPTION AND OPERATION 1. GENERAL The speech communication system makes it possible to establish air—to—ground or air—to—air liaisons. A low frequency communication system is used to operate the radiocommunication means. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 23 COMMUNICATIONS TB20飞机维护手册 通讯(7) |
