Wireless Telephony

Radio Record, Volume II, Issue 36, 22 March 1929, Page 24

Wireless Telephony

A "Revolutionary" Invention [@.is stated that another "revolution" in wireless telephony achievement has been demonstrated at the Bridgewater beam station. Speech was transmitted 3000 miles by a multiplex system on the same wave simultaneously with two wireless telegrams which ‘were being relayed at London at tte rate of hundreds of words per minut. The invention incorporates a new priinciple which enables it to be applied to existing beam stations without radical alteration. Spoken messages are regulated, fading is checked, and uniformity of tone is maintained. Immediately one speaker pauses, an automatic regulator permits the answer to come, but simultaneous speaking jams the communieation. The invention secures almost complete secrecy, and listening-in is impossible without .a special installation. If as successful as it is claimed, the system should have a widespread effect on present systems of communication, both from the points of view ,. of rapidity and secrecy. It is an in-¥" vention that has long been deemed necessary to fully commercialise wireless telephony, for, in the past, speed and accuracy have been the attributes of wireless, but. secrecy was impossible,