I just purchased an F1 Rocket with a pair of vintage 2007 Horizon EFIS Series one. I need to add ADSB and I was wondering what the best way to go is. It has an SL30 and a 430W. I was looking at a Tailbeacon or the Echo. My question is are the older GRT units somehow upgraded to add ADSB or do they both need replaced ? It appears the EFIS have a moving map display
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DUES GLADLY PAID