GPS 155XL/GNC 300XL Installation Manual
P/N 190-00067-22 Rev E Page 3-3
3.4
MISCELLANEOUS OPTIONS
DESCRIPTION
GPN
PC KIT
010-10075-00
GPS 155XL PILOT’S GUIDE190-00067-20
GPS 155XL QUICK REFERENCE GUIDE
190-00067-21
GPS 155XL IN PIPER PA32 DOCUMENTED INSTALLATION
190-00067-26
GNC 300XL PILOT’S GUIDE190-00067-30
GNC 300XL QUICK REFERENCE GUIDE
190-00067-31
GNC 300XL IN PIPER PA32 DOCUMENTED INSTALLATION
190-00067-36
GPS 1.57542 GHz NOTCH FILTER (GNC 300XL ONLY)
330-00067-00
WALL ADAPTER - 110 VAC
362-00014-00
28 TO 14V CONVERTER (GNC 300XL ONLY) (CONSISTS OF
011-00181-00)
010-10057-00
REMOTE BATTERY PACK (CONSISTS OF 011-00182-00)
010-10074-00
3.5
REQUIRED INSTALLATION ACCESSORIES NOT SUPPLIED
The following installation accessories are required but not provided (GNC 300XL only).
•
Comm Antenna—Broad Band 50 Ohm Vertically Polarized with Coaxial Cable
•
Headphones—500 Ohm Nominal Impedance
•
Microphone—Low Impedance Carbon or Dynamic with Transistorized Preamp
3.6
ANTENNA INSTALLATION
For the COMM antenna, follow the manufacturer's instructions (GNC 300XL). The remainder of this section applies
to the GPS antenna. The GA 56 Antenna outline and footprint dimensions are shown in Figure 5-1.
1. Using the backing plate as a template, mark the location of the mounting holes and the through hole for
the coaxial cable. Drill or punch the holes.
2. The antenna installation must provide adequate support for the antenna considering a maximum drag load
of 5 lbs. for the GA 56 antennas (at subsonic speed). Install a doubler plate to reinforce thin skinned
aircraft. Observe guidelines for acceptable installation practices as outlined in AC 43.13-2A.
3.
Seal the antenna and gasket to the fuselage using a good quality electrical grade sealant. Use caution to
ensure that the antenna connector is not contaminated with sealant. Ensure that the mounting screws are
fully tightened and that the antenna base is well seated against the gasket.
CAUTION: Do not use construction grade RTV sealant or sealants containing acetic acid. These
sealants may damage the electrical connections to the antenna. Use of these types sealants
may void the antenna warranty.
