Manual de instrucciones de Neumann.Berlin Condenser s

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Neumann-Information 183 August 1983
Some informations on RF-interferences in the Studio
Neumann condenser microphones are protected through various
means very effectively against RF interferences so that they
may be used also in those cases where other microphones due
to heavy RF radiation do not perform satisfactorily. Some of
our past years experiences pertaining to this Problem have
been collected here for the purpose of helping to identify
this type of interference and to simplify it

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6. Only amplitude modulated RF leads to interference. Inter- ferences caused by FM-transmitters are not known to us. 7. For interference caused by Standard broadcast and short wave transmitters the audio program becomes audible. With TV-transmitters the frame frequency (50 Hz or 60 Hz) is perceived and is easily confused whith AC power line If the interference level fluctuates strongly with hum. movement of the microphone or cable then a TV-transmitter is the probable Source of the int