Hi, we are in the initial stage of installation of a brand new Rosetta in our Jodel, with long term view of permanent installation (we have also bought the external antenna kit), but frustratingly have had two abortive attempts to get the unit working in the aircraft. We have a Charge2 USB power supply, installed and working faultlessly for more than 2 years powering a 1A mini iPad and 2A XPS150 GPS sender. The Rosetta works faultlessly with the supplied cable on ground wall socket power and via a car USB socket, but once in the aircraft, fails to connect or loses wifi connection. It looks like a power issue as outlined in many places on this forum. However, we are at a loss to understand it bearing in mind we have the right kit and cabling. Before going to the effort and cost of having all the aircraft wiring and avionics examined, a question about the Charge2 unit.
We have (I believe) a fairly new 18V battery for starting the engine and operating general systems, checking this. We always see low volt light on start up until the (old) generator gets up to speed, and this will come on when all systems drawing power (i.e. switching on electric fuel pump to land). The iPad and GPS plugged into Charge2 work correctly immediately although there is a slight pause after turning on Master switch before the two green lights showing power supplied to the devices appear. On our Rosetta connection, we don't plug in the iPad or the GPS and only the Rosetta is connected. The Charge2 power indicator light shows continuous green - even though the start up period power on the main supply side may be below 18v (more like 12-14v on the ammeter) until the generator gets going to add juice back into the battery. Does this indicator guarantee that the output side from the USB socket to the Rosetta is at or above the 5.2V that Rosetta needs and is stable, or is there still a possibility that Charge2 output is fluctuating /interrupted? It looks like the Charge2 is not providing the correct or continuous power to Rosetta as the unit works absolutely fine from ground mains power.
Any pointers would be appreciated so that we can investigate further. Don't want to go down the route of portable battery power as we already have a perfectly (we think) usable solid power supply in the aircraft, although the infrastructure behind the Charge2 may need to be inspected.
