Explain like I'm 5: Stratus + AXP340 + Skytrax

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   OK, I need some help figuring out how to properly configure my equipment, so please use small words and crayons if any drawings are required.
I have an IFD540, a SkyTrax 100, and an AXP340. The airplane passes the FAA ACR data quality check.

I sometimes fly with a Stratus1 so I can have weather, traffic, etc. on the iPad I use with Foreflight.

Routinely I will see traffic that appears on the IFD but not on the iPad, or vice versa.

How do I fix this so I see the same set of targets on both devices?

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paulr Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 24 Jan 2014 Status: Offline Points: 558	Post Options Post Reply Quote paulr Report Post Thanks(0) Quote Reply Topic: Explain like I'm 5: Stratus + AXP340 + Skytrax Posted: 14 Jul 2016 at 9:05am
	OK, I need some help figuring out how to properly configure my equipment, so please use small words and crayons if any drawings are required. I have an IFD540, a SkyTrax 100, and an AXP340. The airplane passes the FAA ACR data quality check. I sometimes fly with a Stratus1 so I can have weather, traffic, etc. on the iPad I use with Foreflight. Routinely I will see traffic that appears on the IFD but not on the iPad, or vice versa. How do I fix this so I see the same set of targets on both devices?

MysticCobra Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 29 Jan 2013 Status: Offline Points: 661	Post Options Post Reply Quote MysticCobra Report Post Thanks(0) Quote Reply Posted: 14 Jul 2016 at 12:46pm
	Since Stratus and SkyTrax use different antennae, it's always possible that one will be receiving from a tower and the other is not. No way to "guarantee" you'll see the same targets on two devices unless they're fed by the same receiver. Additionally, the Stratus can receive direct (air-to-air) broadcasts from 1090ES-equipped planes, but the SkyTrax is only receiving on UAT (978MHz), so it's possible that you could be getting direct traffic reports from targets on FF that aren't available on the IFD. (Not true for Stratus 1, as pointed out below.) You can improve you chances by making sure your AXP340 is set to say that you're a UAT ADSB-in guy, so the towers will always broadcast to you on 978MHz. Edited by MysticCobra - 14 Jul 2016 at 2:18pm

ddgates Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 12 Aug 2011 Location: Deer Valley Status: Offline Points: 1100	Post Options Post Reply Quote ddgates Report Post Thanks(0) Quote Reply Posted: 14 Jul 2016 at 1:06pm
	The Stratus 1 is single band, 978. The Stratus 2 is dual band. He says he has a Stratus 1, so his TXP needs to tell the ground 978 in only, as you said. Edited by ddgates - 14 Jul 2016 at 1:08pm
	David Gates

MysticCobra Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 29 Jan 2013 Status: Offline Points: 661	Post Options Post Reply Quote MysticCobra Report Post Thanks(0) Quote Reply Posted: 14 Jul 2016 at 2:17pm
	Whoops--missed the "1". Thanks for the clarification.

sikhpilotmd Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 08 Oct 2014 Location: KISP Status: Offline Points: 69	Post Options Post Reply Quote sikhpilotmd Report Post Thanks(0) Quote Reply Posted: 14 Jul 2016 at 9:04pm
	My stratus 2 and the MLB 100 traffic matches almost to a T