Quite a few people have been experimenting with very low cost 10GHz units that can be bought for very little on eBay. A few cups of coffee saved and you can buy 10GHz units. In Italy these have been used to work over 200km. Some have used them for 10GHz ATV.
There is a Facebook page on the HB100.
I have to admit to being a "fireside fusilier" in that I'm gunner do this and gunner do that. At some point I'd like to try 10GHz.