Antenna Installation Procedure - Kannad 406 AF-COMPACT Installation Manual

INSTALLATION MANUAL OPERATION MANUAL INSPECTION LOG
KANNAD 406 AF-COMPACT
be subjected to any tensile load and should be tied loosely to the tether.
C. Antenna installation procedure
Ensure that the antenna mounting location meets the requirements as
described § B. Antenna mounting location.
A double plate will most likely be necessary for the antenna to meet rigidity
specifications in § B. Antenna mounting location.
A 9 Kilogram force (20 pound force) applied in all direction should not cause an
appreciable distorsion in the aircraft skin.
Each of the approved antennas requires a ground plane. On fabric-covered
aircraft or aircraft with other types on nonmetallic skins, a ground plane must
be added. This can be accomplished by providing a number of metal foil strips
in a radial position from the antenna base and secured under the fabric or wood
skin of the aircraft. The length of each foil radial should be at least equal to the
antenna length [(0.61 meter, 24 inches for ANT200); (0.39 meter, 15.47 inches
for ANT300)].
Figure 205: Antenna ground plane for non metallic aircraft
According to the antenna to be installed, use the appropriate outline drawings
and drilling masks to determine the hole patern and drill size (Refer to § 5.
ANT200 Outline Dimensions, page 505 or Refer to § 6. ANT300 Outline
Dimensions, page 506).
Fabricate a 50 Ohms coaxial cable long enough to reach between the ELT
installation location and the antenna location.
IMPORTANT: The length of the coaxial cable should not exceed 2 meters
(6 ft) for a standard RG58 or equivalent coaxial cable. If the cable length
exceeds 2 meters, a low loss cable of attenuation less than 1 dB must be
used (See Important notice Section D. Outside antenna, page 6).
Fit both ends of coaxial cable with a waterproof Male BNC connector (not
supplied), reference RADIALL R141007 or equivalent.
Connect one Male BNC connector to the antenna Female BNC socket.
PAGE: 209
FEB 01/2008