This is the DBS RANGE Mod install guide for P3P or P3A. If you have P3S please standby for guide. The DBS mod increases range by approximately double and varies depending on environment. An alternative to DBS range mod is FPVLR. Both cost around the same price. There are pros and cons to both. Heres a google doc I wrote up in case you like to read and not watch video instead has pictures and text: DBS ITELITE MOD 02 P3P or A.docx Heres a youtube with a decent install process.