Antennas: Difference between revisions

Revision as of 15:08, 6 July 2022


Garmin GPS antenna for G3X	GA56 (BNC connector) (not included with G3X)
Garmin GPS antenna for certified GPSs (GTN650, GNX,...)	GA35 (TNC screw-on connector) (GPS price might include antenna or not, check with vendor, Sarasota includes it)
Transponder / ADS-B antenna	Comant CI-E05 (experimental version of CI-105)
VHF top antenna (works better for ground communications)	Comant CI-E21 (experimental version of CI-121)
VHF bottom antenna (works well when airborne but not necessarily on ground)	Comant CI-E22 (experimental version of CI-122)
MB antenna	Rami AV-64
VOR/GS antenna	Archer VOR ANT LT Model 1 (different order number for left and right, please check)
ELT antenna	(whatever comes with your ELT)

Example of Bob Archer NAV / Glideslope Antenna mounted in aftermarket Aveo ZipTip.

Frequency plot of Bob Archer antenna (shows 50 Ohm and resonance in the VOR/LOC frequency range of 108-118 MHz):

ELT antenna installation is governed by 14 CFR § 91.207 and AC 91-44A: It asks for:
- "Proper installation" (which means you need to follow the installation instruction from the ELT manufacturer)
- "The presence of a sufficient signal radiated from its antenna" (annual test).
- The antenna to be vertically mounted
You may install the antenna inside the airplane if
- The airplane skin is non conductive (the RV-10 fiberglass canopy area should be fine) or the antenna is centered behind a window of at least 12 x 12 inch size
- You provide a ground plane for it (24 inches radius for 121 MHz!)

@@ Line 10: / Line 10: @@
 **[https://www.eaa.org/videos/77829561001 ELT Installation]
 * Doubler Plates
+** See chapter 23 of the Garmin G3X Touch installation manuals for GPS doubler plate templates
 ** [https://www.steinair.com/product/ga-35-gps-antenna-doubler/ Stainair Garmin GA-35 / GA-55 / GA-56 GPS Antenna Doubler]
 ** [https://www.steinair.com/product/garmin-gps-xm-antenna-doubler/ Steinair Garmin GA-57X GPS/XM antenna doubler]
@@ Line 17: / Line 18: @@
 * Installation Manuals
 ** [http://static.garmin.com/pumac/GA35GPS_WAAS-antenna_AntennaInstallationInstructions.pdf Garmin GA35 GPS Installation Instructions]
+** See chapter 23 of the Garmin G3X Touch installation manuals for VHF antenna location considerations
+** See chapter 20 of the Garmin G3X Touch installation manuals for GPS antenna installation instructions
 === Antennas ===