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Mounting the remote receivers – Spektrum SPMAR9100 User Manual

Page 6

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2. Mount the switch on the side of your aircraft and insert the switch plug in the

port in the main unit marked SWITCH.

Note: The PowerSafe uses a specifically designed switch. Conventionally wired

switches are not compatible with the SmartSafe.

Spektrum AR9100

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Spektrum AR9100

10

1. Using foam or thick double-sided foam tape and tie wraps, secure the main

PowerSafe unit in the position that you would normally mount the receiver.

Installing the PowerSafe Main Unit

Installing the Batteries

Using the above guidelines select the battery system that best fits your

application and install the battery(s)/regulator(s) in your aircraft. Connect

the battery to the PowerSafe. Spektrum batteries are pre-wired with an EC3

connector and plug directly in. If using another brand of battery it will be

necessary to solder EC3 connectors (2 are included with the AR9100) to

the battery leads. If using a regulator, install it per the guidelines included

with the regulator.

Mounting the Remote Receivers

A

ntenna Polarization

For optimum RF link performance it’s important that the remote antennas

be mounted 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. If two receivers are used, the antennas

should be oriented perpendicular to each other, typically one vertical and

one horizontal (see illustrations on pages 11–12). This allows the greatest

exposed visual cross section of the antennas from all aircraft orientations.

If three antennas are used it is recommended that one antenna be mounted

vertically, one horizontally in-line with the fuselage and one horizontally

perpendicular to the fuselage (see illustration). This covers the X,Y and Z

axis offering superb cross section visibility in all aircraft orientations. An

optional fourth antenna can be added at an intermediate angle offering even

greater RF link security and system redundancy.
Locating the Remote Receivers
While Spektrum 2.4GHz 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