ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-2 (453-5000), C406-2HM (453-5001)
570-5000 Rev. U
Company Confidential
25-62-11
Page 43 of 66
SUBTASK 25-62-11-450-001
B.
Location
1)
Select a suitable location for the antenna.
a)
Place the antenna in a location where the antenna can be installed within 15° of vertical and with
at least 30 inches (762 mm) of clearance from other antennas, particularly VHF, in accordance
with RTCA/DO-204, § 3.1.10.2.
NOTE:
AC 43.13-2, Chapter 3 recommends a minimum distance of 36 inches (914
mm) clearance between antennas.
b)
Additional location guidance may be found in AC 43.13-2, Chapter 3, which deals specifically with
antenna installations.
SUBTASK 25-62-11-450-002
C.
Installation
NOTE:
Refer to the airframe manufacturer’s written
instructions and AC 43.13-2, Chapter 3
for antenna installation practices and requirements.
1)
Install a doubler plate if necessary to meet rigidity requirements. A 20 lb (9.1 kg) force applied to the
antenna in all directions should not cause an appreciable distortion in the aircraft skin.
2)
Install a ground plane if necessary. In certain applications, particularly those where antennas are
installed on composite, fabric, or wood airframes, a ground plane is required.
3)
Drill the antenna mounting holes and coax connector holes referring to the appropriate antenna
illustration for hole patterns and hole sizes.
a)
See Figure 16 on page 44, Figure 17 on page 45, and Figure 18 on page 46.
4)
Mount the antenna referring to the appropriate antenna illustration for hardware requirements,
torque, and other applicable installation requirements.
5)
Two coax cables, 6 feet (1.8 m) long, are provided as part of the ELT kit. The 121.5/243.0 MHz cable
has BNC connectors and the 406 MHz cable has TNC (antenna) and TPS (ELT) connectors.