Portable kit for encrypted stereo transmission
Portable kit for encrypted stereo transmission

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Portable kit for encrypted stereo transmission

  • Digital radio tap set
  • Type of transmission – mono or stereo
  • Very high quality of sound
  • Portable kit for encrypted stereo transmission is controlled remotely
  • High stability of transmission
  • Interference resistant


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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.


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Specification of the Portable kit for encrypted stereo transmission
Audio RMD 200S transmitter
Frequency416.5 – 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
Output power of the Portable kit for encrypted stereo transmission (for 3.6V)20/100 mW
Supply voltage2.5 – 3.6 V
Power consumption (for 3.6 V, 100 mW)100 mA
Remote control signal sensitivity0.7 mV
Size72 x 24.5 x 7 mm
DPK 003S remote control
Frequency151 MHz
Output power (@50 Ohm)300 mW
Number of functions17
Power supply20/100 mW
Supply voltage4x AAA 1.5 battery
Supply voltage6V
Size100 x 51 x 18 mm
PRK 045S Audio Receiver
Sensitivity1.5 mV
Power supply of the Portable kit for encrypted stereo transmission4x AA 1.5V battery
Current draw150 mA
Size127 x 106 x 27 mm


  • 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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