Frequency Detector

PKI 4110Print

With the PKI 4110, you have a highly sensitive broadband frequency detector at hand providing a very wide frequency range for professional detection and location of radio monitoring systems. Its functionality allows even an amateur to use the basic functions of the device and to achieve protection against eavesdropping.

The built-in audio demodulator allows to eavesdrop on analog radio systems. With the Geiger click indicator, the detection and localization of most of the dangerous eavesdropping systems is simple and efficient. Fitted in a lightweight, compact and rugged metal housing with 4-way signal strength indication (graphical, numerical, delayed and peak), radio transmitters, whether digitally encoded, spread spectrum, hopping or pulse transmissions, no longer escape it. Even mobile phones and computers (including manipulated systems) are perfectly detected. Recording possibilities including time and signal strength complete the equipment.


  • Frequency range: 0.5 MHz up to 22.5 GHz
  • Sensitivity: 0.06 μW ERP (400 MHz / 5 cm / level=5 )
  • Dynamic range: 43 dB basic, +40 dB attenuation LOCAL
  • Detectable pulse width: >80 μS
  • HF filter (HF OFF): -26 dB at 10 MHz
  • Audio volume: 4 steps
  • Geiger click generator: internal buzzer
  • LED display: 2 characters
  • Signal strength indication: numerical 251 levels / graphical 39 levels
  • Peak level indication: delayed numeric 251 steps / 24 steps
  • Alarm memory: 16 events incl. time and signal level
  • Alarm counter: 99 events
  • Power supply: internal 9 V block battery (or rechargeable battery) external 12V – 20 V DC unstabilized
  • Current consumption: 3.5-6 mA
  • Dimensions: 150 x 60 x 31 mm
  • Weight: 295 g