Spektrum Air Module System Manual page 41

Installing the Receiver
A typical installation would include the main receiver mounted in the conventional
location in the fuselage and the remote antennas in the nose (jets) in the top turtle
deck and even in the tail. The optimum location is as far away from any conductive
materials as is practical.
Spektrum Air Module
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In helicopters, there is generally enough room on the servo tray to achieve the
necessary separation.
If necessary, a mount can be made using clear
plastic to mount the remote antenna as shown.
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