Traffic displayed on 430 map
Just a small correction.
The Garmin GNS430 and 530 won't display traffic from ANY type of traffic device on the map page unless the 430/530 is receiving heading information. In most cases, this means having the 430/530 interfaced to a Sandel EHSI or a Shadin Fuel/airdata computer, top get serial heading data, or the traffic device is a Skywatch or KTA870 receiving synchro heading from an H.S.I.
Traffic will always be available on a dedicated track-up page, but not overlaid with any nav information.
Personally, I'd sooner have a traffic system (in my case TCAD) and have some warnings of something I might not have seen, that nothing at all. It's a shame so many people with transponders don't always use them, or else leave Mode C off.