VHF Communication System PDF
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This document provides detailed information about VHF communication systems, including their components, location, management panels, and operation. It covers topics like frequency ranges and how to establish connections to ground stations, suitable for those in aviation or closely related fields.
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VHF COMMUNICATION SYSTEM INTRODUCTION The VHF communication system is used for short distance voice and data communication with ground stations or other aircraft. The VHF frequency range for aircraft communication systems is from 118 MHz – 136.975 MHz. VHF SYSTEM COMPONENTS Moder...
VHF COMMUNICATION SYSTEM INTRODUCTION The VHF communication system is used for short distance voice and data communication with ground stations or other aircraft. The VHF frequency range for aircraft communication systems is from 118 MHz – 136.975 MHz. VHF SYSTEM COMPONENTS Modern a/c has 3 independent VHF systems. Each VHF communication system has a transceiver in the avionics compartment and an antenna. The 3 antennas are installed at different locations on the aircraft fuselage. VHF SYSTEM COMPONENTS LOCATION RADIO MANAGEMENT PANEL Is the component where you make frequency selections for the VHF and HF radio communication systems. RADIO MANAGEMENT PANEL The RMP has 2 frequency windows. The left window is called the active window. It shows the operating frequency on the selected system. The other is called the standby window which shows a new selected frequency. RADIO MANAGEMENT PANEL When you press the transfer button on an RMP, the frequencies change windows. This means that the standby frequency becomes the active frequency and vice versa. All RMPs are constantly updated by each other. When you activate a frequency on one RMP, it is also visible on other RMPs when the same system is selected. SYSTEM OPERATION How to establish a connection to a VHF ground station. 1st you must cross check that the selection for your audio equipment is done on your audio control panel and that the required VHF communication system is selected on the RMP. SYSTEM OPERATION The required frequency is selected by turning the frequency selector knob. This changes the frequency in the standby window. SYSTEM OPERATION After selection of the correct frequency you must activate the frequency for the VHF system no. 1 Before you transmit your request to the VHF ground station listen to the reception to make sure that no actual communication is in progress. You can now start the transmission by activating one of the PTT switches.
