On Mon, Oct 24, 2016 at 09:05:34AM +0100, Someone Somewhere wrote:

... GSM-R ...

Actually - I've just looked and they decided to use different
frequencies which introduced a level of protectionism that seems
unnecessary.

I was under the impression that that wasn't because of protectionism but
to avoid having to share crowded spectrum with the hundreds of people
sitting behind the driver.

--
David Cantrell | even more awesome than a panda-fur coat

Graecum est; non legitur