Certain Frequency???
Good trainer. The structure is very rugged, but nothing will survive every possible impact. It likes being flown slow. Too fast makes the controls overly sensitive. Most of the time you should use 1/2 to 2/3 throttle.
Don;t forget to get an experienced R/C pilot to assist ESPECIALLY the first day. (and after that, you'll believe you need the help for several more trips to the flying field...)