SpenceSouth works for the company that created that app. I've requested they add a feature that would only start a search (by cycling Airplane mode) when LTE is lost. The current Auto Search feature isn't as useful to me, as I want to stay on LTE as long as possible while mapping. And, in fringe areas, it is inevitable that you will loose and have to reaquire an LTE connection while mapping. Going behind obstructions, over hills, etc all affect this to some extent. As a result, this will cause the morse code like mapping at the edges...
Sent from my Galaxy S III