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Honeywell BendixKing KN 62A Installation Manual page 18

Distance measuring equipment
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BENDIX/KING
antenna and six (6) feet from a transponder antenna.
e.
Where practical, plan the antenna location to keep cable lengths as short as possible, and
avoid sharp bends in the cable to minimize the VSWR.
f.
To prevent RF interference, the antenna must be physically mounted a minimum distance of
three feet from the KN 62/62A/64.
g.
A back-up plate should be used for added strength on thin-skinned aircraft.
h.
The antenna should be kept clean. If left dirty (oil covered) the range of the DME may be
affected.
i.
On pressurized aircraft, the antenna should be sealed using RTV (P/N 016-01082-0000)
around the connector and mounting hardware.
j.
All antennas should be sealed around the outside for moisture protection.
2.3.4.2
KA 60/61 Installation (Refer to Figure
a.
Peel the backing off the antenna template and apply template to the aircraft at the desired
mounting location.
b.
Drill or cut the proper size holes for mounting the antenna, then remove the template.
c.
Using the antenna as a stencil, draw a line around the base of the antenna that will come
into contact with the aircraft. Then carefully scrape off the paint within the stenciled area.
Lightly sand the bare metal with fine sandpaper to insure removal of all paint and protective
coatings.
d.
Sand the inside area of the aircraft where the backing plate will be located to remove the
chromate or other protective finish.
e.
Apply Alumiprep No. 33 (P/N 016-01127-0000) following the directions on the container to
cleanse the metal of any residue.
f.
Apply Alodine No. 1001 (P/N 016-01128-0000) following the directions on the container.
g.
Rivet the backing plate (P/N 047-04570-0000) into place, if required.
h.
Mount the antenna using #8 star washers (P/N 089-08017-0037) and 8-32 nuts (P/N 089-
02148-0032) included with the antenna.
i.
RGU 400 or equivalent coaxial cable is normally used on installations having a cable run of
ten feet or less. For cable runs from ten to twenty feet, use RG 142B/U cable (P/N 024-
00002-0000).
j.
Inspect coaxial cable connector for proper center contact, then fasten it securely to the
antenna.
Rev 7, November/2004
2-16
and 2-17)
00144I06.TDC
KN 62/62A/64
Page 2-4

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