High-speed wireless telegraphy

This paper consists in the main of a record of experimental progress directed towards the mechanicalization of wireless telegraphy in as simple and portable a form as possible. One of the great difficulties in a modern war on a large scale was shown to be that of providing at short notice the trained personnel necessary for the manipulation of scientific and highly technical apparatus. Simplicity in handling such apparatus is therefore a matter of great importance. Experimental work has now arrived at a point at which it has been shown by practical experience that apparatus can be produced which, in the hands of operators of average ability, enables wireless telegraphy to be carried on by mechanical operations both in transmission and in reception, either by itself or in continuation of a line system; and this at all speeds up to the maximum of Wheatstone apparatus.