Browsing by Author "Rynja, Henk A. J."

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    • Comparative calibration programme within NATO countries 

      Rynja, Henk A. J. (NATO. SACLANTCEN, 1963/11)
      A NATO inter-laboratory programme of comparative hydrophone calibration is described including a description of the calibration facilities and methods of the participants. Hydrophones Type H29, F31, and F36 from the US ...

    • Frequency deviation indicator 

      Rynja, Henk A. J. (NATO. SACLANTCEN, 1963/11)
      A new type of discriminator was developed to measure the frequency variation of electrical signals; it has the special feature to indicate without any delay the difference between the signal frequency and some fixed reference ...