GA 56W Antenna Installation Instructions
Page 1-1
190-00483-01
Revision
D
GA 56W Antenna Installation Instructions
Careful planning and consideration of the following guidelines are required to achieve the desired
performance and reliability from the GA 56W antenna.
1. Introduction
The GA56W is a GPS antenna with an integral preamplifier providing a minimum gain of 26.5 dB and a
noise figure of less than 4 dB. The GA56W is intended for use with a GPS receiver requiring an external
preamplifier.
1.1
Antenna Mounting Location
The antenna must be mounted on top of the aircraft. For best performance select a location with an
unobstructed view of the sky above the aircraft when in level flight. Refer to Figure 1. The antenna
should be located at least 3 feet from transmitting antennas such as VHF Comm, HF transmitter, DME,
Transponder, and Radar, and at least 6 inches from receive only antennas such as GPS and XM. Cabling
for the antenna should not be routed near cabling which is associated with transmitter antennas for VHF
Comm, HF transmitter, DME, Transponder, or Radar.
Figure 1
ANTENNA INSTALLATION LOCATION
