As we gain more experience using SafeSky it has become very obvious that ADSB coverage in Ireland is limited at low level, say, 3,000 feet. FR24 shows many more traffic items. Also experience an anomaly when flying alongside a companion aircraft at 2,500’. He had run out of battery on his phone so I was now receiving his position via ADSB hub. For a period of time near the centre of the country he was shown at FL80. This reverted to 2,500’ a few minutes later.
GSM coverage has been shown to be very good with little ‘dropout’. Distances and heading to ‘Fellow Pilots’ is a great feature that has led to a number of safe rendezvous.