I have bought most of my Items from ReadyMadeRC.com Great guy to deal with. He will stand behind all his equipment.
I have used 5.8gHz and it works great for short to Medium range. I now fly 1.3gHz because I want to do long range.
The 300mw 1.3gHz has the same range if not farther than a 500mw in 5.8gHz.
But keep in mind that if you fly 2.4gHz on your radio you can only do 900mHz or 5.8gHz with good results.
Anything like 1.3gHz will kill your radio range if using 2.4 Radio.
Because I use 1.3gHz I converted my 9c Futaba radio to UHF. It want interfere with my 1.3gHz video, plus I can fly out miles now.
I am adding an EZOSD to my plane this weekend so I can get an Idea how far out I have been flying. Along with a lot of other info.
I am in no way an expert , but if you have questions I will give it my best shot to help you with an answer. As will anyone else on here.
This is my ground station I use now.
