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Old 07-15-2019, 08:12 AM
N941WR's Avatar
N941WR N941WR is offline
Join Date: Jan 2005
Location: SC
Posts: 12,887

On my tip-up tail dragger, I mounted all the GPS antennas on the glairshield. Easy to wire and maintain.

The comm antenna is under the left seat, two machine screws through the spar web and two through a doubler.

Transponder antenna on the right side, just aft of the firewall and inboard of the fuel vent. The ADS-B antenna is in the same spot, only on the left side.

VOR antenna (Archer) is scheduled for the wing tip.

No long wire runs in the limited space through the spars and no interference issues.
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
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Old 07-15-2019, 09:28 AM
Walt's Avatar
Walt Walt is offline
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,601

Bottom antennas
ADB in, Com, Xpdr

Top: Com 2, Comdant (com/GPS)

Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website:, Email:, Cell: 972-746-5154
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Old 07-18-2019, 09:24 AM
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smokyray smokyray is offline
Join Date: Jan 2005
Location: TX32
Posts: 1,881
Default It's a drag...

Originally Posted by RVdreamin View Post
I am getting ready to start my electrical. I would first like to mount the antennas. On the top rear skin, I am planning to install the ELT antenna near the center bulkhead. I was going to mount GPS antenna on the top skin just aft of the baggage area near the bulkhead. I would like to mount the VHF radio antenna on the bottom skin underneath the baggage area and the transponder antenna underneath the seat near the spar. Anyone see any issues. I would like to have 2 VHF radio antennas, but not sure where to put an additional antenna.
Hey Jimmy,
On both my RV's and my HR2 I wanted as little as possible sticking out in the breeze as every little bit helps when it comes to drag.
That said, as mentioned above, GPS antennas can be mounted inside, on glare shield, a shelf in back, under cowling out front, etc. I never mounted my ELT antenna externally on my RV4, HR2 or RV6"X" as it works great inside and is one less drag coefficient and less "ugly". I mounted my RV6"X" Comm antenna on the belly between the gear legs as its a bit less drag but mainly it's more aesthetically pleasing IMHO.

On my RV4 I mounted my GPS antenna under the canopy, my Bob Archer Comm antenna inside the left wingtip, my transponder antenna inside the other wingtip therefore making it a complete, inside job.

Good luck!

RV6-X Comm


Last edited by smokyray : 07-18-2019 at 09:44 AM.
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