What else could be the issue with my adsb?

[483RV]

Thanks Jonathon. I went ahead and upgraded to the 472 and got it installed today. I only tested it on the ground - will have to test fly when it is a bit less windy than today. On the ground pulled out of the hangar so that I could get GPS signal through the GTN650 I was able to see a lot more of the traffic in the skies above me. However, it seems to blink and I will go from 10 adsb targets to 0 and then after a few minutes I would go back to 10 targets again. Any thoughts on what would cause that sort of blink? I checked the connections from 472 to SV-XPNDR-261 and connection to the ACM control module and they were all solid and not loose. Would the pin 3 ohms resistance manifest like that?

[483RV]

Still thinking it is a configuration issue instead of a wiring issue - I am using the ACM install manual and the AF-5000 Pilot's guide to configure menus. In the ACM Installation manual on pg 41 there are menu instructions for a "Dual EFIS Screen IFR Panel settings".
Do those instructions apply to a dual efis panel with a GTN650 just as well as a dual efis panel using an IFD product? The port 3 value on that page is noted as "ADS-B data sent to IFD". On my menus, port 3 was disabled - if I change it to match the settings on pg 41 of the manual - will that address my issue or do I need different settings for a GTN650 vs an IFD?
I matched all the settings on the GTN-650, so now I am just trying to ensure that all my admin settings and xpndr settings in the menus are also correct. Thanks for any clarification you may have.
Tim

[483RV]

In the end it was not the wiring and it was not menu configurations. The software on my Dynon SV-XPNDR-261 was out of date. It was so out of date that it would not receive information from the GTN650. Once the software got updated on the transponder - everything works. I can generate PAPR reports and track using ADSB.
A note on updating the software on the Dynon transponder. If you have Dynon screens, then you can update from that system. Unfortunately, the AFS screens do not allow you to update the software on the transponder. So, either get hooked into a Dynon screen or send it away to Dynon to get the software loaded.
Thanks to Jonathon who helped me troubleshoot on the phone and eliminate issues until I was able to get an avionics shop to find the transponder software issue.