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Radio Record, Volume III, Issue 22, 13 December 1929, Page 8

HE new B.B.C, frequency monitoring receiving station which is situated in Surrey, was recently . com- yf pleted, and is now ‘busy checking the;' wavelengths of British and foreign stations. There are ten receivers, five being--for short waves, and: by _ this means watch.is constantly kept on station frequencies. Should, any deviate from their official wavelength, the offending station is at once warned by telephone and thus adjustments can be made, ;