VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #11  
Old 02-17-2022, 05:53 AM
Thermos's Avatar
Thermos Thermos is offline
 
Join Date: Jan 2005
Location: KASH
Posts: 633
Default

Quote:
Originally Posted by Andy612 View Post
Anyone know if something like this Archer Model 5 antenna mounted with proper vertical polarization in a wing tip might satisfy Nav Canada/Transport Canada's requirements for ADS-B?
Only time will tell whether an installation like this will comply with the standards that TC will publish but from an electrical/RF perspective it should work. You may have an area off the opposite wing where there isn't as much gain, but I can't imagine it being significantly worse than off-the-nose losses with an antenna on the tail as with the TailBeacon.

Beyond the regulations, one thing to watch out for would be coax loss in a wing-mount installation. Most coax used in GA applications is lossy at ~1 GHz ADS-B operating frequencies. My Garmin GTX-45R install manual specified a maximum coax length to ensure enough transmit power at the antenna. The length varied with coax type - thicker, heavier coax often has lower loss and can be used for longer runs. It's best to go with whatever your transponder manufacturer recommends.

HTH,

Dave
__________________
Dave Setser
CFII/MEI, Consultant DER
EAA Technical Counselor/Flight Advisor
RV-7 N701ED Flying!
Nashua, NH (KASH) / Plymouth, NH (1P1)

Last edited by Thermos : 02-17-2022 at 06:11 AM.
Reply With Quote
  #12  
Old 02-17-2022, 07:53 AM
Snowflake's Avatar
Snowflake Snowflake is offline
 
Join Date: Oct 2009
Location: Sidney, BC, Canada
Posts: 4,297
Default

Quote:
Originally Posted by Thermos View Post
Only time will tell whether an installation like this will comply with the standards that TC will publish...
A very long time, perhaps. Whatever regulations come out of this, you can be sure that they will cover the lowest-common-denominator installations, which will be the installations that work the best on the most types of aircraft. I can't see them allowing even amateur-builders the leeway to "try their own thing and see how it goes." We'll all be mandated to use one or two options, that will likely match what's available on the market. Anyone wanting to try something else will have to show through documented testing and certification that they have something equivalent.

Quote:
Beyond the regulations, one thing to watch out for would be coax loss in a wing-mount installation. Most coax used in GA applications is lossy at ~1 GHz ADS-B operating frequencies. My Garmin GTX-45R install manual specified a maximum coax length to ensure enough transmit power at the antenna. The length varied with coax type - thicker, heavier coax often has lower loss and can be used for longer runs. It's best to go with whatever your transponder manufacturer recommends.
I wonder if it would be better then, to remote mount your transponder in the wingtip along with the antenna. Then run power and data lines back to the fuselage/EFIS instead of a coax.
__________________
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
Reply With Quote
  #13  
Old 02-18-2022, 09:53 PM
togaflyer togaflyer is offline
 
Join Date: Apr 2013
Location: Fl/Ga
Posts: 855
Default

Since most U.S. GA aircraft only have the lower antenna, does this mean GA U.S. flights into Canada will be no longer be possible once it’s implemented.
Reply With Quote
  #14  
Old 02-18-2022, 09:59 PM
sblack sblack is offline
 
Join Date: Dec 2009
Location: Montreal
Posts: 1,601
Default

Quote:
Originally Posted by togaflyer View Post
Since most U.S. GA aircraft only have the lower antenna, does this mean GA U.S. flights into Canada will be no longer be possible once itís implemented.
You will be able to fly into uncontrolled airspace.
__________________
Scott Black
Old school simple VFR RV 4, O-320, wood prop, MGL iEfis Lite
VAF dues 2021
Instagram @sblack2154
Reply With Quote
  #15  
Old 02-19-2022, 02:01 AM
jliltd's Avatar
jliltd jliltd is offline
 
Join Date: Sep 2013
Location: Rancho San Lorenzo
Posts: 1,317
Default

Quote:
Originally Posted by togaflyer View Post
Since most U.S. GA aircraft only have the lower antenna, does this mean GA U.S. flights into Canada will be no longer be possible once it’s implemented.
Without only a Mode C transponder you can still cross the border and then fly in non-mandated airspace, which is effectively below 12,500 feet everywhere inside Class G including any uncontrolled field in Class G. So if you are going to a fishing lodge or small uncontrolled field or stay in Class G, the you are fine without ADS-B of any kind. If you want to refuel at a Class E uncontrolled or any type of controlled airport (or Class A,B,C,D or E) you would have to have an approved two-antenna diversity ADS-B out system. Rule of thumb: G = "Go for it".
Attached Thumbnails
Click image for larger version

Name:	canadian-ads-b-mandate-phases-en-011-copy.png
Views:	63
Size:	76.2 KB
ID:	22423  
__________________
Jim Ivey
RV-8

Last edited by jliltd : 02-19-2022 at 03:10 AM.
Reply With Quote
  #16  
Old 02-19-2022, 07:49 AM
tracy tracy is offline
 
Join Date: Dec 2012
Location: chattanooga,tn
Posts: 298
Default

Quote:
Originally Posted by Snowflake View Post
Near as I can tell, the tailBeaconX is still the cheapest option. Single antenna that broadcasts both up and down.
Yea, but that screws up your night lighting requirements. Wish they would have put a strobe on it.
__________________
Tracy Willingham
RV-8
Powered Paraglider
Pitts S2B- sold
Chattanooga, Tn
Dues Paid
Reply With Quote
  #17  
Old 02-19-2022, 09:00 AM
Snowflake's Avatar
Snowflake Snowflake is offline
 
Join Date: Oct 2009
Location: Sidney, BC, Canada
Posts: 4,297
Default

Quote:
Originally Posted by jliltd View Post
Without only a Mode C transponder you can still cross the border and then fly in non-mandated airspace, which is effectively below 12,500 feet everywhere inside Class G including any uncontrolled field in Class G.
So... How do you cross the border without clearing customs at a Class C controlled field? At least, everywhere near me the airports of entry are all Class C.
__________________
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
Reply With Quote
  #18  
Old 02-19-2022, 09:05 AM
Snowflake's Avatar
Snowflake Snowflake is offline
 
Join Date: Oct 2009
Location: Sidney, BC, Canada
Posts: 4,297
Default

Quote:
Originally Posted by tracy View Post
Yea, but that screws up your night lighting requirements. Wish they would have put a strobe on it.
Nothing says your strobe has to be on the rear edge of your rudder. Your rudder moving back and forth changes the distribution pattern so possibly doesn't strictly meet the lighting requirement unless you're not turning...
__________________
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
Reply With Quote
  #19  
Old 02-19-2022, 12:04 PM
rv6n6r's Avatar
rv6n6r rv6n6r is offline
 
Join Date: May 2007
Location: Gearhart Oregon
Posts: 516
Default

So the CA mandated system won't include weather?
__________________
Randall Henderson
RV-6 / O-360 / CS, 1600+ hrs, 1st flight Sept. 1999
Outstanding Workmanship OSH 2000, Craftsmanship award AWO 2000
Airport committee chair & AOPA ASNV for Seaside, OR Municipal (56S), www.seasideairport.org
Last Donated January 2022
Reply With Quote
  #20  
Old 02-19-2022, 12:17 PM
jliltd's Avatar
jliltd jliltd is offline
 
Join Date: Sep 2013
Location: Rancho San Lorenzo
Posts: 1,317
Default

Quote:
Originally Posted by Snowflake View Post
So... How do you cross the border without clearing customs at a Class C controlled field? At least, everywhere near me the airports of entry are all Class C.
We do it all the time on the border with Mexico. For example at KDNA. Don't know about Canada. Perhaps there is not such thing in Canada. But it appears that both Nanaimo BC and Penticton BC are airports of entry and uncontrolled. However, Penticton is Class E. My charts don't cover Penticton.
__________________
Jim Ivey
RV-8
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 04:55 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.