|
-
POSTING RULES
-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|
11-16-2014, 03:56 PM
|
|
|
|
Join Date: Jan 2005
Posts: 604
|
|
com antenna
has any one put a com antenna inside a wing tip? any success in doing so?
dan carley
|
11-16-2014, 04:27 PM
|
 |
|
|
Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
|
|
Not advisable as comm signals are vertically polarized and anything you put in a wing would be horizontal.
Signal strength would be very poor.
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
|
11-16-2014, 05:51 PM
|
|
|
|
Join Date: Jan 2005
Posts: 604
|
|
com
yep that's what i thought, leave the antenna hanging out in the breeze
dan carley
|
11-16-2014, 06:33 PM
|
|
|
|
Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,767
|
|
Quote:
Originally Posted by Mel
Not advisable as comm signals are vertically polarized and anything you put in a wing would be horizontal.
Signal strength would be very poor.
|
I might quibble with the words "very poor".
I built an Archer-clone, bent the high current part downward (top to bottom) as much as possible. I have a -10 so there is more vertical room to do this than in other RV's (except maybe the -14?). I'd say the effective range is about 60 - 70% that of my external belly whip. I'd call it "fair". For my flying, for a #2 com, it's good enough. |
11-16-2014, 09:21 PM
|
|
|
|
Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
|
|
Another problem with the com ant in the wingtip is directional coverage.
If you have it in your port wingtip, you will get little coverage toward the 3 o'clock position.
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
|
11-17-2014, 06:30 AM
|
 |
|
|
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,668
|
|
And another problem is the VSWR is going to be very high on an low efficiency antenna, on a receive only radio the result of that is weak signal, with a transmitter the result is an overload of the transmitter output transistors whiich may result in failure.
__________________
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: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
|
11-17-2014, 10:17 AM
|
 |
|
|
Join Date: Feb 2008
Location: Largo, FL
Posts: 1,027
|
|
We put one on the RV-10 and had to
take it out of the loop and install a belly mount. The wing-tip install was very poor ---- the VOR antenna was just "OK'.
__________________
RV-10 Co-built, maintained, flown (sold)
RV-8A Maintained and flown (Sold)
RV-6A Bought and Flying (N177RV), upgrades $$$
IO360, 180HP/CS, AFS 5600T, D10A, G650, G430, G327, ADS-B, VIZ385 AP
Very Happy Contributor
Comm, SMEL, CFII, A&P
Based at KCLW (Clearwater, FL)
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 11:18 PM.
|
Linear Mode
