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Set UHF transmitter 3v to 6v and UHF receiver quartz pll

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  • Model: SETU36
  • Shipping Weight: 0.05lbs



The UHF36 SET combines the miniaturization and power of the UHF transmitter using 3-6V batteries, and the sensitive UHF-433 PLL receiver Ver. 1.
We are adjusting each set to a 100% matching frequency.

This set is using only high grade components, and one of the unique receiver features - listening and recording at the same time, if it is connected to a recorder.
BU36 is powerful audio spy transmitter, with internal microphone and flexible external antenna, it is recommended for hidden installation in various types of properties and places.
Crystal frequency control eliminates frequency drift and stabilizes the frequency, preventing the effect of temperature changes or any other factors.
It can be concealed in a hidden place inside a room, like under the bed, under a desk, inside a toy or any other object. After inserting the batteries in in the battery holder, it will capture the sounds in the room and transmit them to a one of our receivers or to our UHF FM transceiver, to a distance of up to 600 meters in open space.

The PLL UHF crystal controlled receiver is stabilized by a crystal of quartz, programmed especially for our devices.
Due to the special design, it is very stable, sensitive and powerful.
It is supplied with a sensitive RF input, and by using earphones, you will get one of the best receivers, designed especially for our transmitters and listening devices.

The PLL UHF crystal controlled receiver can be used in a room or business, indoor or outdoor. It employs a high sensitive input circuit which allows the user to listen to the mini FM transmitter from 200m in urban areas and up to 500+ meters (Line Of Sight).


  • Operating voltage: 9V alkaline battery (not included)

  • Dimension: ONLY 2 X 5.5 X 8.7 cm .

  • Frequency: 433.8-433.9MHz

  • This is a 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 SMD components. (MIL SPECS 1% accuracy)

  • External antenna, only 10cm.

  • Built by using SMD components, for more stability and sensitivity

  • Sensitivity: Better than –125 dBm into 50 Ohm (12 dB/sinad)!

  • Deviation: ~ 2.5 KHz to 6 KHz !!!

  • Sockets for audio recording and earphones.

  • External DC socket.

  • PROFESSIONAL PLATED BOARD FOR EXTRA STABILITY. There is NOT oxidation and dry soldered joints during the time due to the coating material.

  • Just connect it to the battery, and start listening.



  • Power Supply: 2 X 3V coin-type battery CR-2430 up to CR-2050

  • Board Dimension: only 2.5cm Diameter!

  • Frequency: 433.6-433.9MHz.

  • Estimated transmitting: up to 500 m line of sight. (L.O.S).

  • Built by using SMD components, for more stability and miniaturization (MIL SPECS 1% accuracy).

  • Using a special material for encapsulating, for safety and stability !

  • The transmitter is coated with special Anti-static material.

  • The transmissions penetrates through walls and ceilings.

  • Tiny FET amplified microphone.


  • 1 Set Crystal controlled PLL Crystal controlled receiver and B36 transmitter.

  • 1 User manual.

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