Have you looked at this, http://fpvlongrange.com/fpv-repeater-system/ I been wanting one these I may just try it out for myself.
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That is actually a VERY cool idea. Combine that with a 5.8ghz100mw video repeater and you can easily put your tx/rx on a long pole or on a tripod sitting on the roof of an SUV and then sit back in the shade on a comfy lawn chair while you drive around. Awesome!
It DOES introduce an additional point of failure for the whole system though, so extra care would have to be taken to fully test before you get too far out. (The advantage with ground-based FPV, you can test without the worry of a destructive crash!) But other than that, I really like this!
Now, the question remains, can we get these in the US?
My house backs up too a very large hill,so my thoughts were to cut some trees for a line of sight with this repeater that could be placed on top of this hill and also include a 5.8ghz video repeater, this would enable me to have a much greater range without walking to the top of the hill each time....Ok I am lazy, this hill is steep and it is a pain in the rear for carrying all the fpv gear up there so this might be the ticket.
Cheers, I've moved the video gear back to it's own lipo, and things are happy again. I don't know if the fact it's an old brushed motor makes a difference. I've got no issues running my fpv gear on my tricopter all from the main battery - but different ESCs and motors.