Harmonic Analyser Checks Railway Traction Interference
A portable harmonic analyser built by the TelephoneManufacturing Co. Ltd was used last year by British Railways during a series of system tests carried out on the Colchester-Clacton line. So, 59 years ago, started a story in Electronics Weekly’s edition of January 18th 1961. The story continues: These formed part of the overall System Test …
This story continues at Harmonic Analyser Checks Railway Traction Interference
Or just read more coverage at Electronics Weekly