Our main solution was to finally get several mifi’s and go to TCP corrections and finally ditch UHF completely (where we can of course).Darren: I have been following your posts. I received the LS Plus June 5. We had returned all 3 parts ( LS _00422, Triumph_1M20215, and the 35 Watt Radio). We have experienced your exact same problems, especially loosing the UHF at about 1,200' with line of sight of the antenna and the message to attach the external antenna (antenna is attached). We use the Matt Johnson (T1M radio issue) "For switching to the external radio" procedure. Did you ever come up with a solution that you would share?
From what I’ve been told it was an internal issue after the units were updated to the Plus. I have also now been told that the issue has been solved and that I will have to send back my 1st LS plus unit to make the necessary repairs.