Petrutech Spy Shop
Professional Eavesdropping, Bugging and Surveillance Equipment

UHF 433MHz phone adapter and UHF receiver crystal controlled PLL


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This is THE best set of the professional wiretap plus receiver using the UHF band. The spy transmitter is camuflaged in a small phone adaptor, and doesn't attract attention. It is feed by the phone line (no batteries) and  covers an incredible long area and due to its special design is the most stable and powerful you may find.
The Miniature UHF transmitter is intended to be used in a property or business place. This phone bug spy UHF transmitter,covert wiretap, will transmit 2 way conversations to a distant  matching receiver. Exceptional audio quality.
The set is designed and produced based on the high knowledge of our high skilled staff, and using only on modern technologies. Each transmitter and receiver is tested and tuned in our specialized laboratory and tested "on field" by high skilled engineers for maximum distance.
The sensitive receiver is adjusted to 433 MHz is crystal controlled, fixed frequency.
We are adjusting each set to a 100% matching frequency. One of the unique receiver features - listening to the conversation and recording at the same time, if it is connected to a recorder.
The PLL UHF CRYSTAL CONTROLLED RECEIVER can be used in a room or business, indoor or outdoor. The estimated distance is from 200m in urban areas and up to 400+ meters (Line Of Sight).



  • Working Voltage: 9V alkaline battery (not included)
  • Dimension: ONLY 2 X 5.5 X 8.7 cm !!!.
  • Receiver's frequency range: 433.8-433.9MHz
  • This is an ORIGINAL crystal controlled NFM PLL UHF receiver.
  • Double Superheterodyne - PLL
  • Sensitivity: Better than –125 dBm into 50 Ohm (12 dB/sinad).
  • Less current drawing than any similar device - due to new components.
  • It uses a special antenna, only 14cm.
  • SMD built, for more stability and range (MIL SPECS 1% accuracy)
  • Sensitivity: Better than –125 dBm into 50 Ohm (12 dB/sinad)!
  • Deviation: ~ 2.5 KHz to 6 KHz !!!
  • Outlets for audio recording and earphones.
  • The battery time-life depends on the battery freshness and brand.
  • External DC jack.
  • PROFESSIONAL PLATED BOARD FOR EXTRA STABILITY. There is NOT oxidation and dry soldered joints during the time due to the coating material.
  • The Receiver comes FULLY ASSEMBLED AND READY TO USE, Just connect it and start listening.


  • Working Voltage: phone line (no battery!)
  • Concealed in a phone adaptor
  • Dimension: ONLY 1.0 X 2.0 X 2.5 cm !
  • Transmitter's frequency range: NFM (UHF) 433.6-433.9MHz FIXED MAINTENANCE FREE CRYSTAL.
  • Long transmitting range: Urban area 200 mt. and up to Line of sight: 400 mt.
  • SMD built, for more stability and range (MIL SPECS 1% accuracy).
  • EXTRA amplified, buffered output!
  • True FM - The only one Varicap controlled for power and stability.
  • Using a patent pending material for encapsulating, for safety and security !!!
  • The device is coated with special Anti-static material.
  • Penetrates through walls and ceilings.
  • Very easy installation.
  • User manual is included.
  • High-tech laminate makes it weather resistant, and THE ONLY ONE which is coated with ANTI - FIRE INFLAMMABLE MATERIAL!!!


  • 1 Set Crystal controlled PLL Crystal controlled receiver and UHF wiretap in adaptor transmitter.
  • 1 Instructions Manual.
  • 1 Gift
  • Model: SETADUHFS
  • Shipping Weight: 0.05Kgs

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