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Portable kit for encrypted stereo transmission

Stage set is a high class compatible device dedicated to stereo sounds' radio encrypted transmission.

Most important features of the Portable kit for encrypted stereo transmission


The device was constructed with the use of advanced 16bits A/C converter and modern signal processing algorithms. As a result we obtain a perfect quality of sound. The signal is transformed into digital form using the quartz crystal, then the GMSK type modulation is processed, followed by radio transmission in the form of frames to the receiver.


Digital signal processing results in reducing interference and noises and a clear transmission. Demodulation in the receiver transforms the signal into analog form again. All the deformations are corrected to obtain the best audio quality.


Transmission's signal encrypting increases the security of transmitted data and protects it from being intercepted and decoded by any unauthorized person.


Two modes of transmission are available: mono and stereo. The stereo mode allows to transmit two signals simultaneously so that it is possible to obtain a surround sound.


The RMD 200S transmitter is compact and has a solid metal case. It possible to hide it even in untypical place without risk of damaging it. Apart from that, the transmitter has the following slots:

  • Antenna, Microphone, Power supply.


Thanks to high class PRK 045S receiver, decrypting and demodulation of the signal is possible. It also corrects deformations and converts the signal to the analog form. It has the following input-outputs:

  • Line-out
  • Headphones,
  • Sound recorder output


The DPK 003S remote control allows to perform the following actions remotely:

  • transmission mode setting (mono/stereo),
  • Frequency synthesizer setting (makes the frequency tuning easier),
  • Transmitter output power setting.
Specification of the Portable kit for encrypted stereo transmission
Audio RMD 200S transmitter
Frequency 416.5 – 423.5 MHz
Dynamic range
  • Stereo mode (2 channels) 0.3 – 4 kHz
  • Mono mode (1 channel) 0.3 – 8 kHz
  • Data transmission speed: 125 kbit/s
Modulation GMSK
Output power of the Portable kit for encrypted stereo transmission (for 3.6V) 20/100 mW
Supply voltage 2.5 – 3.6 V
Power consumption (for 3.6 V, 100 mW) 100 mA
Remote control signal sensitivity 0.7 mV
Size 72 x 24.5 x 7 mm
DPK 003S remote control
Frequency 151 MHz
Output power (@50 Ohm) 300 mW
Number of functions 17
Power supply 20/100 mW
Supply voltage 4x AAA 1.5 battery
Supply voltage 6V
Size 100 x 51 x 18 mm
PRK 045S Audio Receiver
Sensitivity 1.5 mV
Power supply of the Portable kit for encrypted stereo transmission 4x AA 1.5V battery
Current draw 150 mA
Size 127 x 106 x 27 mm
Spy Shop
Spy Shop is a company created to provide customers with high-end detective devices constructed for monitoring and securing property, protecting confidential information, protecting against surveillance, conducting surveillance and a number of other applications. Recipients of Spy Shop products are both individual customers and government institutions, security agencies, detectives, business owners or law enforcement services. The wide range of products allows you to protect the safety of your child, secure your company and business meetings, track valuable shipments, monitor company property and secure private property. Thousands of satisfied customers, numerous articles in the trade and national press and presence at major specialized events guarantee full satisfaction with the products purchased.
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In box
In box
  • RMD 200S Audion transmitter
  • DPK 003S remote control
  • Audio PRK 045mm receiver
  • User manual of the Portable kit for encrypted stereo transmission

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