Bend radiis for coax is best if kept at 40X times O.D.Using the filled braid for direct burial is the way to go. Coax heating can be caused by hi SWR.either by too tight a bend or BAD mfg practices. You get what you pay for.I do know that TIMES does all it can to keep the SWR down as low as possible during its mfg process. Jack WA1ZDV