Spektrum SPMAR12200 - Manual (Page 8)

EN
8
Patented MultiLink™ Receiver Technology
The AR12200 supports four receivers, offering the security of multiple path RF
redundancy. External receivers attach to the main unit using extensions. Installing
these receivers in different places in the aircraft exposes each receiver to its own RF
environment, greatly improving path diversity (the ability for the receiver to see the
signal in all conditions).
Antenna Polarization
For optimum RF link performance, mount the remote antennas in an orientation
that allows for the best possible signal reception when the aircraft is at all
possible attitudes and positions. This is known as antenna polarization. Mount one
antenna vertically, one horizontally in-line with the fuselage and one horizontally
perpendicular to the fuselage. Installing antennas in this pattern offers optimum
cross-section visibility.
Receiver Installation
While Spektrum 2.4 GHz systems are far more resistant to interference caused
from internal RF generating sources, the remote receivers should be mounted as far
away as practical (typically 4” or greater, if possible) from the following:
• Ignition systems
• Ignition batteries
• Ignition switches
• Engines
• ECUS pumps
• Electric motors
• Receiver batteries
• Fuel tanks
• Metal bypass tubes
• High-temperature components like exhaust systems
• Any significant metallic conductive components
• High-vibration areas
Mount the remote receivers a minimum of at least 2” apart from each other as
greater antenna separation gives improved path diversity (RF link performance)
in critical environments. In large aircraft where space is not an issue, mount the
antennas throughout the aircraft as illustrated below. Spektrum offers remote
receiver extensions ranging from 6” to 36” to ensure the receivers can be mounted
in the most optimum locations throughout the aircraft.
Using double-sided foam tape and tie wraps, mount a minimum of 3 remote
receivers in your aircraft and connect the receivers to the receiver ports of the
Spektrum Cockpit. The following illustrations show typically recommended
installations. Note the remote receiver orientation.