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  #11  
Old 02-01-2020, 01:55 PM
Aluminum Aluminum is offline
 
Join Date: Jul 2017
Location: San Jose, CA
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Quote:
Originally Posted by mturnerb View Post
Van's provides two locations for COM antennas just in front of the spar carry-through structure.
Right, not debating the amazingly beautiful perfection of that placement, but rather wondering what to do with the extra hole now that GTX 45R all but obsoleted it.

One idea is to reuse that tail location and the long cable for COM, one of the forward locations with short cable for xponder, and the middle-fuse one for, say, a wideband cell phone signal booster from Delta Pop.

COM doesn't care much about the long cable as the loss at 120 MHz is tiny, but unsure what the odd cylindrical ground plane would do for radiation pattern and SWR.

Then there's the aesthetics of it. "My airplane is a convertible, that's a tail skid for rough unimproved strips."
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'91 Zodiac flying since 2013
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  #12  
Old 02-01-2020, 04:57 PM
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dpansier dpansier is offline
 
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Location: Green Bay, WI (GRB)
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Quote:
Originally Posted by Aluminum View Post
Right, not debating the amazingly beautiful perfection of that placement, but rather wondering what to do with the extra hole now that GTX 45R all but obsoleted it.

One idea is to reuse that tail location and the long cable for COM, one of the forward locations with short cable for xponder, and the middle-fuse one for, say, a wideband cell phone signal booster from Delta Pop.

COM doesn't care much about the long cable as the loss at 120 MHz is tiny, but unsure what the odd cylindrical ground plane would do for radiation pattern and SWR.

Then there's the aesthetics of it. "My airplane is a convertible, that's a tail skid for rough unimproved strips."


I have produced a number of 2.4 GHz WIFI antennas that will bolt in that location, several are experimenting with airborne WIFI.
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Don Pansier
Green Bay, WI (GRB)
RV-7 N450DP
W9LYX

Antennas for Experimental Aircraft
www.deltapopaviation.com
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  #13  
Old 02-01-2020, 06:04 PM
JDA_BTR JDA_BTR is offline
 
Join Date: Dec 2013
Location: Baton Rouge, LA
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An update: the duct tape I covered the hole with remains fully aerodynamic 115 hours later!
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  #14  
Old 02-01-2020, 06:28 PM
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Av8rRob Av8rRob is offline
 
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Location: Rescue, CA. KROB
Posts: 337
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Im thinking of pop riveting my data plate over those holes. Anybody know if the bottom of tail is a legit location for the data plate?
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Rv-14 still workin, but getting close
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  #15  
Old 02-01-2020, 07:47 PM
mturnerb mturnerb is offline
 
Join Date: Apr 2015
Location: Ponte Vedra, FL
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Originally Posted by Av8rRob View Post
Im thinking of pop riveting my data plate over those holes. Anybody know if the bottom of tail is a legit location for the data plate?
Interesting question. This is from EAA website:

"[T]he aircraft identification plate must be secured to the aircraft fuselage exterior so that it is legible to a person on the ground, and must be either adjacent to and aft of the rearmost entrance door or on the fuselage surface near the tail surfaces.

Note that the regulation specifically requires the data plate to be on the exterior of the aircraft. It cannot be mounted on an interior surface, even if it is visible from the outside. The regulation also stipulates that the date plate should not be attached in such a manner that it will not likely be defaced or removed during normal service, or lost or destroyed in an accident. Thus, the data plate should not be placed on an inspection cover or access door, or on any part that is commonly removed for maintenance or inspection. It should be attached to the fuselage itself"
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RV-14A built/sold N14VB
RV-10 in progress as of May 2020

https://tbrv10.blogspot.com/
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  #16  
Old 02-02-2020, 01:44 PM
Aluminum Aluminum is offline
 
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Quote:
Originally Posted by Av8rRob View Post
Im thinking of pop riveting my data plate over those holes.
I think this one takes the cake then.

Thanks for the idea! OUNCES saved!
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'91 Zodiac flying since 2013
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  #17  
Old 02-03-2020, 08:23 AM
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kiljoy kiljoy is offline
 
Join Date: Sep 2014
Location: Alameda, CA
Posts: 168
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I'm using mine for a curtesy light. I already had a spare pair of wires going back there so why not a lil LED to help with the tie down and preflighting in the dark.
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  #18  
Old 02-03-2020, 01:21 PM
mturnerb mturnerb is offline
 
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Quote:
Originally Posted by kiljoy View Post
I'm using mine for a curtesy light. I already had a spare pair of wires going back there so why not a lil LED to help with the tie down and preflighting in the dark.
Now that's a great idea!!
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RV-14A built/sold N14VB
RV-10 in progress as of May 2020

https://tbrv10.blogspot.com/
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  #19  
Old 02-03-2020, 08:59 PM
JDA_BTR JDA_BTR is offline
 
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That really is the best idea yet. I don't have a spare wire going all the way back there but I'm not too proud to hijack the RG400 for a power lead.
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  #20  
Old 03-07-2020, 05:44 PM
sjarrell sjarrell is offline
 
Join Date: Jul 2010
Location: Hendersonville, NC
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Quote:
Originally Posted by JDA_BTR View Post
When you use a GTX-45R transponder you only need one antenna for ADSB In/Out, and it should be run to the antenna at the right baggage area to keep the length of run in spec.....
Which spec are you referring to? I'm looking at the GTX-45R ADSB Transponder Installation Manual and the only wiring specs that I'm finding are on page 3-7 and 3-8, and the only length requirement that I see is that there has to be a minimum of 3' of cable between the GTX-45R and the antenna.

Thanks!
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