UpThere wrote:As most aircraft have a transponder, there doesn't seem to be much point in using a separate EC device which can't transmit its location. Have I misunderstood something?
Probably not misunderstood, just not decided whether you think having EC is worthwhile.
SE2 in/out with no transponder = OK
SE2 in/out with Mode C = OK
SE2 in/out with Mode S = not OK officially. Should be just 'in', officially
SE2 in with Mode S-ES = OK you don't need SE2 out, your transponder is doing it
(the SE2 in is presumably providing you with [via Skydemon or other]
your EC awareness)
Everyone on ADS-B in/out = the future, maybe, or maybe a scalable, secure upgrade of ADS-B
The question is, what are you going to do NOW? Wait? How long? Is there a benefit available now? Is it worth the cost?
Don't take off and leave fuel you need in the bowser.
Other solutions are available