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 === Mounting Instructions ===
+*Summary of Rules
+**GPS antenna
+***2 feet min from COM antennas / transmitting antennas, better 3 feet
+***9 inches min (better 12 inches) from other GPS antennas and multiple GPS antennas not in a straight line front to rear, rather offset left and right
+***no shadowing, far away from tail
+***level
+***at least 3 inches back from windscreen
+***8 inch diameter ground plane
+**COM antenna
+***needs 18 inch square ground plane
+***6 feet from other COM antennas / transmitting antennas (e.g. DME) for best performance, 3 feet minimum to prevent damage of COM receiver
+***far away from ELT antenna
+***top and bottom placement if simultaneous transmitting is desired on two radios without interlock
+***1 foot from persons (Canada rule)
+***1 foot from any protruding metal surface (gear leg, vertical stabilizer)
+***far from GPS antennas
+**Transponder / ADS-B antenna
+***6 feet from other transmitting antennas
+***3 feet from receiving antennas
+***far from access panels / doors
+***3 feet minimum cable length to the transponder unit
+***3 inches from any protruding metal surface (gear leg, vertical stabilizer)
+**Radar Altimeter antenna
+***Should be near the pitch and roll center of rotation to minimize altitude change during maneuvers close to ground
+***Must be within 6 degrees of being horizontal during flight
+***At least 20 inches from ground when parked
+***No obstructions within 120 degree cone
+***Far away from other antennas (not spelled out, but generally 3 ft from receiving and 6 ft from transmitting antennas ideally)
+** ELT Antenna
+*** 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!)
 *EAA Videos
 **[https://www.eaa.org/videos/6268473907001 Antenna Placement]
@@ Line 9: / Line 46: @@
 **[https://www.eaa.org/Videos/Hints-for-Homebuilders/Electrical/38486239001 Antenna Coax Connectors 2]
 **[https://www.eaa.org/videos/77829561001 ELT Installation]
+**[https://www.eaa.org/videos/6311043679112 Antenna base sealants]
 * Doubler Plates
-** [https://www.steinair.com/product/ga-35-gps-antenna-doubler/ GA 35 GPS Antenna Doubler]
+** See chapter 23 of the Garmin G3X Touch installation manuals for GPS doubler plate templates
-** [https://www.steinair.com/product/bent-whip-com-antenna-doubler/ Comant CI-121 Bent Whip Antenna Doubler]
+** Garmin sells the GA56 GPS antenna as kit which includes the doubler plate
+** The GA35 GPS antenna does not include a doubler plate
+** The Comant antennas don't include doubler plates
+** [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]
+** [https://www.chiefaircraft.com/gmn-115-00846-10.html Garmin GA-35 / GA-55 / GA-56 GPS Antenna Doubler (Part  115-00846-10)]
+** [https://www.steinair.com/product/bent-whip-com-antenna-doubler/ Steinair Comant CI-121 Bent Whip Antenna Doubler]
+** [https://www.steinair.com/product/ci-105-dme-transponder-antenna-doubler/ Steinair Comant CI-105 DME Transponder Antenna Doubler]
+** Garmin does not provide a template for a doubler of the new [[GHA-15|GHA-15 Radar Altimeter]]. Builders show possible patterns [https://www.facebook.com/groups/vansrv10/posts/6340273269427052 here] and [https://www.facebook.com/groups/vansrv10/posts/6523286341125743 here]
+** BuildFlyGo's [https://www.youtube.com/watch?v=PFHch0x2VHA Video] on doubler design using CAD
+** Rodrigo Damazio Bovendorp's [https://www.airplane.build/2023/11/custom-designs.html CAD files]
+* Installation Manuals
+** [http://static.garmin.com/pumac/GA35GPS_WAAS-antenna_AntennaInstallationInstructions.pdf Garmin GA35 GPS Installation Instructions]
+** See the [https://static.garmin.com/pumac/190-01115-01_au.pdf Garmin G3X Touch installation manual] for GPS, VHF, Radar Altimeter antenna location considerations
+** see page 115 of the [https://www.advancedflightsystems.com/downloads/AdvancedPanel%20Installation%20Manual%20V6.1.pdf AFS ACM installation manual] for RV-10 specific antenna placement
+** See also paragraph 603 (page 98) of [https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC43-206part2.pdf AC43-206 part 2].
 === Antennas ===
 {| class="wikitable"
-|Garmin GPS antenna for G3X||GA56 ('''BNC''' connector)<BR>(not included with G3X)
+|Garmin GPS antenna for G3X||GA56 ('''BNC''' connector)<BR>(not included with G3X)<br>"kit" contains doubler plate
 |+
 |Garmin GPS antenna for certified GPSs (GTN650, GNX,...)||GA35 ('''TNC''' screw-on connector)<BR>(GPS price might include antenna or not, check with vendor, Sarasota includes it)
 |+
-|Transponder / ADS-B antenna||Comant CI-E05 (experimental version)
+|Transponder / ADS-B antenna<br>Needs to include 978 to 1090 MHz range||Comant CI-E05 (experimental version of CI-105)
 [[File:Xponder.png|132x132px]]
+Note: Comant was bought by Cobham which was bought by Thales. Sourcing is currently an issue.
 |+
 |VHF top antenna
 (works better for ground communications)
-|Comant CI-E21 (experimental version)
+|Comant CI-E21 (experimental version of CI-121)
 [[File:Top vhf.png|141x141px]]
+Note: Comant was bought by Cobham which was bought by Thales. Sourcing is currently an issue.
 |+
 |VHF bottom antenna
 (works well when airborne but not necessarily on ground)
-|Comant CE-E22 (experimental version)<br>[[File:Bottom vhf.png|120px]]
+|Comant CI-E22 (experimental version of CI-122)<br>[[File:Bottom vhf.png|120px]]
+Note: Comant was bought by Cobham which was bought by Thales. Sourcing is currently an issue.
 |+
-|MB antenna||Rami AV-64
 |+
-|VOR/GS antenna||Archer VOR ANT LT Model 1 (different order number for left and right, please check)
+|VOR/GS antenna||[[File:catwhisker.png|140x140px]]<br>"Cat Whisker" antennas (for top of VS or bottom of tailcone), e.g. AV-12L (low profile antenna, Spruce Part# 11-05847) or AV-532L (sturdier body, Spruce Part# 11-05101)<br>[[FIle:bobarcher.png|140x140px]]<br>Archer VOR ANT LT Model 1 (Spruce Part# 11-21015-1, but different order number for left and right, please check)
 |+
 |ELT antenna||(whatever comes with your ELT)
+|+
+|Marker Beacon antenna||Rami AV-64<br>[[File:Screen Shot 2023-10-07 at 1.17.12 PM.png|140x140px]]
+|+
+|Radar Altimeter||[[File:gha15.png|140x140px]]<br>Garmin GHA-15, see also page [[GHA-15]].
 |}
 [[File:NAV_antenna.jpg|600px]]
-Example of Bob Archer NAV / Glideslope Antenna mounted in aftermarket Aveo ZipTip.
+Example of Bob Archer NAV / Glideslope Antenna mounted in aftermarket Aveo ZipTip. Note how the outer edge of the hinge overlaps to the center line of the attachment plate.
+See also the Bob Archer original articles on aircraft antennas [http://www.aeroelectric.com/articles/Antennas/Antennas_for_Aircraft.pdf here].
 Frequency plot of Bob Archer antenna (shows 50 Ohm and resonance in the VOR/LOC frequency range of 108-118 MHz):
 [[File:Archer plot1.jpg|600x600px]]
-=== ELT Antenna Placement ===
-* 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!)