Often, in testing continuity or audio circuit function, where resistance measurement is not appropriate, an audio signal can be injected and picked up by the amplifier or radio under test or by monitoring the output using an amplifier and earpiece. The FK903 features two fixed output tones 500Hz and 1000Hz which are easily recognized against a background of other signals.

Technical Specification

  • Power Supply : 3VDC @ 1mA max.
  • Output Frequency : 500Hz and 1,000Hz
  • Signal Level : 2,600mA max.
  • PCB Dimensions : 1.59" x 1.59" x 0.6" (40.4mm x 40.6mm x 15mm)
  • Recommended Housing : FB03

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