McMurdo Silver Company 903 Contador de freqüência
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Modelo:
903
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Descrição:
Absorption Frequency Meter

Informação

In transmitter design and construction by the amateur in his shop or in the commercial laboratory, few instruments are as necessary as the absorption wave-meter. With it operation of Oscillator, Amplifier and double, stages . . . super-regenerative and other receivers . . . may be investigated and checked rapidly and effectively .Of particular importance, frequency multiplying stages driven by a low frequency Oscillator can be checked to insure output on the correct harmonic. model 903 Absorption Frequency Meter covers the unusually wide frequency range from 1600 kcs. up through the new amateur and civilian 400/500 megacycle ranges. It consists of an etched aluminum panel carrying a 600-series ,low-loss Steatite insulated tuning capacitor, inductor socket and resonance-indicating lamp and socket. A knob and pointer permit accurate setting of the tuning capacitor to any‘point upon eight scales,- seven directly calibrated frequency ranges, the eighth scale 0-100. With suitable inductor plugged into the rear socket and held near a transmitter tank circuit, resonance and approximate frequency is indicated either by dip of plate current meter or by the indicator lamp. The extreme frequency range of model 903 Absorption Frequency Meter is made possible by two different types of tuned circuits. Upon six ranges the tuning capacitor is in parallel with the selected inductor wound upon a low-loss TYPE 125 Micanol Plug-In form and functions as a conventional parallel-tuned resonant circuit. Upon the seventh, or 400/500 megacycle range, the inductor is a Plug-In quarter-wave transmission line with series tuning.

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Manual do Usuário
Tipo de manual:
Manual do Usuário
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2
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126.84 Kbytes (129882 Bytes)
Idioma:
english
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Documento Scaned, a leitura parcialmente mal, não parcialmente legível.
Data de upload:
2017 02 04
MD5:
411687b5a7c3307d60241ea4d9dbcbd2
Downloads:
599