I agree with starting small as well. F450 or F550 - there are so many good tutorials on how to build these, and you'll ALWAYS use them, even with a bigger rig - on a windy day or just to do test shots or site surveys, they're really nice to have around.
Oh! And instead of going the DJI route with the H3-3D for a GoPro, I personally started with this:
http://www.arrishobby.com/brushless...pro-hero3-3axis-brushless-motor-gimbal3-p-739
It's a little less expensive and it allowed me to convert from a 1-person rig to a 2-person rig very easily and it works pretty darn well. The DJI stuff just doesn't seem to allow a lot of flexibility. There's no "pan" to the H3-3D, which... of course, you just turn your MR side to side and that's your pan, but on a moderately windy day, having a 2-person rig or at least having the pan set to a control on your transmitter makes a big difference. Just my 2 cents on that - not to mention it's a bit cheaper. This is their 3rd generation of the CM3000Pro and it's pretty tight. I still use mine and use a neutral density filter on the GoPro.
I wanted to address the 5.8GHz thing again, one last time. Today, just now, I changed my config on my quad - stuck my TS832 on it with a cloverleaf antenna. The antenna in the picture is a cheapy - I also swapped and tried it with one from VAS (IBCrazy). I was using my GS920 Boscam goggles AND a Black Pearl 7" monitor with diversity. I don't have a dedicated 5.8GHz receiver like my 1.2/1.3's from RMRC. On my goggles, as you'll see, I have a 5-turn helical antenna, which I also tried my omni's - but the 5-turn helical is much better. Again, this helical is from VAS.
I flew in a straight line - straight line of sight at around 90 to 100 meters altitude. At 2010 feet/613 meters my goggles stopped working. The video was degraded so bad I couldn't go further. Switching to the Black Pearl monitor, I could get another 40 to 50 feet away - maybe a little more. I couldn't make 1km - there's just no way.
I've read that the TS832, while it says 600mw, it's really only about 570mw. So maybe there's "some" difference there. I've just never been able to get a kilometer away with 5.8GHz. I'm guessing that if I bought a 1000mw or 2000mw 5.8GHz transmitter I "might" get there. However, that said, the 2000mw transmitters pull 800mah of power, which is a LOT, I think. Surely that would reduce flight time "some". So the only other test I'd like to do is with an IRC 600/700mw 5.8GHz with my Dominators to see if the receiver is any better, but I'm doubting it will be.
View attachment 22236
Here's the thing, you can start, just like I did and buy the transmitters, monitors and the goggles that do 5.8GHz - spend a ton of money only to discover you have a lot of limitations, or... read up and learn how to use 1.2/1.3GHz. Get yourself a 500mw 1.2GHz transmitter (hobbywireless.com - 500/1000mw 1280/1258 lawmate modified vtx), get a 1.2/1.3GHz receiver with sawtooth filter from readymaderc.com with a VAS mad mushroom antenna (with a multirotor, you'll be hard pressed to outfly the mad mushroom antenna and 1.3 - no reason for an antenna tracker) - get a UHF LRS system and don't waste the thousands of dollars stepping up into this setup. You should definitely start with a smaller multirotor and a GoPro, but just make sure that what you buy to start with, isn't going to be a waste later on.
D