After reading multiple, consistent posts here that indicate the stock P4 remote is a bit under powered compared to prior models, I began to research upgrade options. I then settled on the ITELITE - DJI Range Booster ITE-DBS02.2 from Maxxuav.com. Along with it, I also purchased the Clean Install Kit and a pair of 5dBi Antennas. The ordering process was flawless, and they were very quick to respond to some questions that I had about my order. Shipping was fast, and everything arrived neatly packaged with all that I needed to do the mod myself (other than tools). Basically, the Clean Install Kit involves removing the stock antennas and their attached cables from the remote and then replacing them with new cables that leave you with screw-on antenna posts where your stock antennas used to be, allowing for you to affix the antenna of your choice depending upon the mission. Here is my finished remote with the included rubber post caps over the newly installed antenna posts. The process of installing the Clean Install Kit was greatly aided by a tutorial video posted on the MaxxUAV.com website, and it is a must watch in its entirety prior to and then again while performing this mod. You will want to have all the required tools, and you will want to be confident when it comes to performing precise and delicate electronics work (no soldering involved). If you want the mod but feel after watching the video that you are not up to performing the mod yourself, they offer this service as well. As mentioned above, it seemed sensible to add the 5dBi Antennas to this order, and here is the finished remote with them installed. They screw on quickly and are perfect for that quick up and stay close mission. Here is the finished remote with the ITELITE - DJI Range Booster ITE-DBS02.2 installed. The antenna plate mounts to a very sturdy, metal bracket that clips very easily and securely to the remote's, lower metal bracket, and the included cabling neatly connects the antenna plate to the remote's antenna posts. I am not going to tell you that I have taken my P4 out and gotten crazy range with this mod, but I will say that on a particular one mile LOS mission over water along the coast, my stock antennas resulted in my remote and video feeds dropping to around 70%. I am sure there is some radio noise along this route as well - with a residential and business presence - so I felt it to be a good test. This same mission with the plate above installed, I was 100% solid the whole time. I have no plans of pushing my range to probably anything over 1.5 miles or so - as battery becomes a possible issue - but what I was looking for was signal reliability within this range. I feel strongly that this mod offers me that, and I am glad that I did it.