Which radio channel to choose?

Question

Arduino

Perhaps I'm going to participate in the battle of robogazon geektimes.ru/company/robogazon/blog/261930
How can I reliably transfer data from the base to the mower? It is assumed that the mower may not be in direct line of sight. For example, behind the house.
Channel width: 1-2 KB/s.
Distance: < 100m

Answer 1

In the absence of line of sight, most 2.4GHz technologies fly by. Even if some zeebee can break through one or two (non-concrete) walls at low speeds, then it will be difficult to call such a solution reliable, especially given the strong noise at 2.4 GHz in general.
You better look towards the subGHz range. For example, Texas Instruments is famous for its ultra-sensitive, long-range sub- GHz transceivers (more wiki ).
TI CC1120 - in general, one of the most powerful, sensitive and long-range transceivers in the category of a few dollars apiece.
Here and here about them in detail in Russian, of course, not without a share of advertising, but very informative.