5 public-domain matches

Signal Amplitude

Cover of Advances in Robot Path Planning, Volume II

Advances in Robot Path Planning, Volume II

Unknown author

Cover of IS 2320: Methods of Measurements for Amplitude Modulated Radio Frequency Signal Generators (30 kc/s to 30 Mc/s)

IS 2320: Methods of Measurements for Amplitude Modulated Radio Frequency Signal Generators (30 kc/s to 30 Mc/s)

Bureau of Indian Standards

Cover of IS 2321: Requirements for General Purpose Amplitude Modulated Radio Frequency Signal Generators (30 kc/s to 30 Mc/s)

IS 2321: Requirements for General Purpose Amplitude Modulated Radio Frequency Signal Generators (30 kc/s to 30 Mc/s)

Bureau of Indian Standards

Cover of Principles of radio communication

Principles of radio communication

John Harold Morecroft

Cover of Wireless telegraphy for amateurs and students

Wireless telegraphy for amateurs and students

Thomas M. St. John