Echo should be accessed via dial (Dial-a-TG)
to 9990 as Private Call
Go to your TG9 channel.
Manual Dial 9990 Private Call, PTT for up to 3 sec. The repeater/hotspot will respond with a voice announcement, “Linked to 9990.”
Then Via TG9 talk and when you un PTT Echo will respond back.
Echo only works on Slot 2 via TG9 (Dial-a-TG)