Howdy,

My 5600 EFIS is showing "No Radar" in the lower right corner. I display traffic and I have METAR/TAF/TFRs. I didn't see a target displayed for that Gulfstream that I shared Newhall Pass with the other day. I'm thinking that perhaps I am not getting TIS-B service and all the targets I see are direct broadcast from UAT equipped aircraft. I have a UAT only receiver. I am using the 261 Xpdr for ADS-B out. To complicate the issue, I occasionally hear a traffic warning and see my own N number which I would think means that I am at least sometimes getting TIS-B, but don't always know to not display myself.

I asked for my PAPR which came back clean except for yellow blocks at NACv. I'm showing 4.0. The gummint website says that no manufacturer has been authorized to go higher than 2.0. Got no idea what any of that means.

What does "No Radar" really mean? What do I need to do to get an "OK" displayed there? How can I tell if I am receiving TIS-B?

Thanks,

Ed Holyoke