Chapter 4. Low hand on the wireless — and on the physical layer
Book
French
ID: <
10670/1.lxuaca>
Where these data come from
Abstract
I have a colour poster on the wall of my office. Quite large (approximately 100 x 75), he is entitled, in a very beautiful antan typewriter police, ‘United States Frequency Allocations — The Radio Spectrum’. On the left, there are 33 coloured boxes listing the names. Thirty of these boxes list ‘radio services’, the other three lists ‘activity codes’. The latter are...