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General Radio Model 1521-B Graphic Level Recorder produces a permanent ink recor, US $208.00 – Picture 0
General Radio Model 1521-B Graphic Level Recorder produces a permanent ink recor, US $208.00 – Picture 1
General Radio Model 1521-B Graphic Level Recorder produces a permanent ink recor, US $208.00 – Picture 2
General Radio Model 1521-B Graphic Level Recorder produces a permanent ink recor, US $208.00 – Picture 3
General Radio Model 1521-B Graphic Level Recorder produces a permanent ink recor, US $208.00 – Picture 0
General Radio Model 1521-B Graphic Level Recorder produces a permanent ink recor, US $208.00 – Picture 1
General Radio Model 1521-B Graphic Level Recorder produces a permanent ink recor, US $208.00 – Picture 2
General Radio Model 1521-B Graphic Level Recorder produces a permanent ink recor, US $208.00 – Picture 3

General Radio Model 1521-b Graphic Level Recorder Produces A Permanent Ink Recor

US $208.00

  • Apopka, Florida, United States
  • Jan 29th
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General Radio Model 1521-B Graphic Level Recorder produces a permanent ink record of the level of ac voltages, at frequencies from 7 cps to 200 kc. The trace, which is proportional to the logarithm of changes in input level, and hence linear in decibels, may be plotted as a function of time, on translucent chart paper. When the recorder is set up to drive the dial of an external oscillator, it automatically plots level vs frequency, yielding a permanent record with minimum time and effort. The translucent paper permits superposition of one recording over another for comparison. Recording width is four inches. Fast writing speed in conjunction with a wide servo bandwidth enables the Type 1521-B to record rapidly changing signal levels from the outputs of various electrical and electroacoustic devices. Writing speed is high enough for most reverberation-time measurements. The Type 1521-B can also be used as a de recorder, with an input-voltage range of 0 to 0.8 volts.
Condition:
Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. ...
Brand GeneralRad GR
MPN GR 1521B
Model Chart Recorder
Country/Region of Manufacture United States

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