Standard Frequencies

Radio Record, Volume IV, Issue 39, 10 April 1931, Page 19

Standard Frequencies

American Scheme

PONSORED by the American Radio Relay League, an amateur -organisation, the work of transmitting standard frequency signals has been care ried out for a period of over 12 months. So reliable have been the transmitted signals that’ other countries have adopted the transmitted frequencies as standard. The signals transmitted by .WIXP, the main :station, are accurate. within one part in a million, : while W9XAN is: accurate within one part in ten thousand, ‘The Wireless Institute of Australia has made arrangements ‘to. use the same idea by allotting two stations as markers for the top and bottom of the 41-42.8 metre waveband, These stations. are required to transmit'a modulated earrier wave at certain periods when other stations can’ make their calibrations, .