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Stereo Compressor, Limiter,Clipper and Encoder for FM Transmitter Broadcast. High quality.

Еverything you need in one board.

Tested and working modules. You'll get what you see in the photos!

The product is made by hi-quality original electronic components , no chinese analogues !!!
 

 

Characteristics:

 

  • No signal overshooting
  • Low noise and distrortion
  • Simple to adjust 
  • Preciese preemphasis (50us/75us selectable by jumper) including HF clipping with no distortion audible
  • Signal overshooting prevention (overshooting max. 10 %)
  • Low noise and distortion
  • Pilot tone level, audio gain and output level adjustment
  • High channel separation and spectral purity in common operation
  • RDS input and pilot sync. output makes easy to connect any RDS encoder
  • Microcomputer controlled
  • PCB size without connectors 65mm x 215mm (65mm x 245mm with connectors)

 

Supply voltage:

9-16 V(stabilized)

Quiescent supply current (12 V):

50 mA

Output voltage:

linear adjustable 0-3.5 V p-p (0-1.2 V rms)

Lower cut-off frequency (3 dB):

input: 25 Hz, output: <2 Hz

Upper cut-off frequency (3 dB):

14.5 kHz

Min. input voltage:

0.6 V p-p (0.2 V rms)

Input impedance:

5000 ohm

Output impedance:

500 ohm

Signal-to-noise ratio: 

>70 dB

Encoder

 

Audio 19 kHz rejection:

40 dB

Channel separation at 1 kHz:

>55 dB

Subcarrier rejection:

>60 dB

Pilot sampling frequency:

1.843 MHz (19 kHz x 97)

Subcarrier sampling frequency:

1.843 MHz (38 kHz x 48.5)

Pilot sync. output:

TTL

Max. audio input voltage:

10 V pp (3.55 V rms)

Pilot tone level:

linear adjustable 0-0.5 V pp

Output voltage gain:

linear adjustable 0-2.5

Audio input impedance:

2000 ohm

RDS input impedance:

1000 ohm

MPX output impedance:

500 ohm

Pilot sync. output impedance:

10000 ohm

Signal-to-noise ratio: 

>70 dB   

 

 

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