HC Deb 17 June 1925 vol 185 c509
70. Viscount SANDON

asked the Postmaster-General if his attention has been called to the successful experiments in the United States on subterranean wireless; whether any such experiments are officially being undertaken in this country; and, if so, with what success?

Viscount WOLMER

Experiments in wireless transmission, using buried cables instead of an aerial, have been conducted by the Post Office from time to time, but the results do not suggest that such a system of transmission would be suitable for commercial purposes.