ADSB range

[woxofswa]

I recently did a multi leg trip through mainland and Baja Mexico with several other aircraft. (Flying Samaritans).

Two of the aircraft were certified types with ADSB, one was Garmin and the other was Freeflight. Flying down, mine worked fine but once I got about 40 miles south of the border, my display of traffic sputtered and then quit. The other two had traffic display the entire trip. Coming home, once I got close to the border, my traffic display returned to normal.
This isn't a complaint, I'm just curious why theirs continued to work down south and mine didn't. Is there some setting I need to change? Additional software? Antenna issue? Just trying to better understand the system and how it works.

 

[jc2da]

Probably they were dual frequency. I think all Garmins are. Dynon ads-b is single and requires a ground station. The further away you get from the last ground station, you lose traffic. The other guys monitor the transponder freq so can still display traffic.

 

[dynonsupport]

But note that they can only see aircraft with ADS-B OUT, not all aircraft. So while they saw each other, there's no ADS-B mandate down in Mexico so they wouldn't have seen any local aircraft, or even 90% of US aircraft that happened to be there.

 

[airguy]

But note that they can only see aircraft with ADS-B OUT, not all aircraft. So while they saw each other, there's no ADS-B mandate down in Mexico so they wouldn't have seen any local aircraft, or even 90% of US aircraft that happened to be there.

Dynon - that's not really the point of the question though. The problem is that the Dynon-equipped aircraft wasn't seeing ANY traffic, and that's a problem.

Many people have asked many times for a dual-frequency receiver and Dynon has not made any comment or commitment to going forward with that, I think you are missing the boat here.

 

[woxofswa]

Thanks for the comments. That would explain why they saw me the whole time but I couldn't see them which I
definitely missed as we crossed the gulf in loose formation. It would be worth the upgrade for me to get the added capability.

 

[mikeschumann]

I totally second the need for a dual frequency ADS-B receiver. I fly a Phoenix Motorglider and am frequently at relatively low altitudes at remote locations where I am outside of coverage from an ADS-B ground station. In that situation I can't even see other ADS-B OUT equipped Dynon Skyview Aircraft!

 

[ed.meyer]

But note that they can only see aircraft with ADS-B OUT, not all aircraft. So while they saw each other, there's no ADS-B mandate down in Mexico so they wouldn't have seen any local aircraft, or even 90% of US aircraft that happened to be there.

Dynon - that's not really the point of the question though. The problem is that the Dynon-equipped aircraft wasn't seeing ANY traffic, and that's a problem.

Many people have asked many times for a dual-frequency receiver and Dynon has not made any comment or commitment to going forward with that, I think you are missing the boat here.

I Agree!!

 

[GalinHdz]

But note that they can only see aircraft with ADS-B OUT, not all aircraft. So while they saw each other, there's no ADS-B mandate down in Mexico so they wouldn't have seen any local aircraft, or even 90% of US aircraft that happened to be there.

Dynon - that's not really the point of the question though. The problem is that the Dynon-equipped aircraft wasn't seeing ANY traffic, and that's a problem.

Many people have asked many times for a dual-frequency receiver and Dynon has not made any comment or commitment to going forward with that, I think you are missing the boat here.

I also agree.