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GENERAL RADIO GR LABORATORY PRECISION WAVEMETER 224, US $3000 – Picture 0
GENERAL RADIO GR LABORATORY PRECISION WAVEMETER 224, US $3000 – Picture 0

General Radio Gr Laboratory Precision Wavemeter 224

US $3000

  • Prospect Park, Pennsylvania, United States
  • Nov 1st
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BRAND: GENERAL RADIOMODEL: 224 PRECISION WAVEMETER SERIAL NUMBER: 657 CONDITION: EXCELLENT. PROTECTED BY STRONG DURABLE BOX. QUANTITY: 1 MADE IN: U.S.A. SPECS: CALIBRATION - Two calibrations are furnished, one giv- ing the frequency and wavelength corresponding to scale readings for each inductor, and the other giving the capacitance of the condenser as a function of its scale reading.               ACCURACY - The design and method of calibrating these wavemeters are such that the user can depend on their resonant frequency being within 0.25 per cent. of the values given in the calibration chart tor a period or one year from date or purchase. Whether or not this accuracy is realized in practice depends on the method of measurement and the care with which the user makes the measurement               Coil A 75 - 250 meters, Coil B 250 - 800 meters, Coil C 800 - 2500 meters, Coil D 2500 - 7700 meters, Coil E 7700 - 24,000 meters. HISTORY: CAME FROM LAB ENVIRONMENT TEST REPORT: UP TO SPECS ACCESSORIES: COMES IN SOLID CASE. ALSO WITH 5 COILS.   The Precision Wavemeter is intended primarily for general Iaboratory and service uses where a rapid and fairly accurate measurement of frequency or wavelength is required. Beside the usual measurement or the frequencies of oscillators, radio transmitters, and received signals they can also be used to determine approximately the natural frequency of a tuned circuit, the inductance of coils, and the capacitance or condensers at radio frequencies.                

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