But still, monitoring two channels simultaneously, such as trying to pick up ATIS while also on a busy ATC sector, can get pretty crazy. This method helps keep things somewhat sane, especially in IFR. ATC, or occarionally flight service or flight watch), and to use comm 2 only as a monitoring frequency for picking up ATIS, etc.

Note: My current method for handling the radios is to always use comm 1 for my active bidirectional channel (i.e. If I do install a second transceiver, then I'll need to install a second comm antenna as well. For my airplane, I might only elect to install only a single comm transceiver (a Garmin GNS-430W), in which case I will only install a single comm antenna. It is common to have two comm transceivers in the aircraft, both for utility (the frequency juggle and/or multi-frequency monitoring) and for reliability/redundancy (old-style radios failed often), and most such aircraft in fact have two comm antennas. Both transmit and receive), an aircraft having more than one comm transceiver will need a separate antenna for each transceiver. Since the comm antenna is used for bidirectional communication (i.e. I'm reviewing the installation of my Comant CI 122 VHF Com antenna, to see whether I really need a doubler for that antenna or not. Communications, VOR, Localizer, Glide Slope, DME, Transponder, Marker Beacon Antennas by Comant Industries.

ComAnt LP Installation instructions to radio to antenna grounding point (M8) The preferred location for lightning protector is outside of protected zone. Light aircraft typically use rod antennas for VHF comm, mounted vertically (typically with some slant aft) either on the top or bottom of the fuselage.Ĭommunications, VOR, Localizer, Glide Slope, DME, Transponder, Marker Beacon Antennas by Comant Industries. VHF Comm Aviation-band VHF communication ('comm') signals are transmitted in the range of 118 to 136 MHz, and are vertically polarized. Relevant resources include AC 43.13-2B chapter 3, as well as installation guidelines from specific antenna and avionics manufacturers. Roee's RV-7A Project - Builder's Log - Antennas Roee Kalinsky's RV-7A Project Antennas This page summarizes information about the selection, design, location, and installation of the various antennas in the aircraft.

Comant antenna installation manual