AVT2797 A

CB receiver module with AM modulation. It is a superheterodyne with a low intermediate frequency. Thanks to this the system is characterized by good sensitivity and selectivity. This construction is so simple that even a beginner electronics can try to create it.
The signal reaching the system from the antenna is pre-separated in the input filter and then amplified. Thus prepared, it reaches the integrated circuit TDA 1072A - a complete AM receiver with modern internal architecture. The complement are the noise blocking circuits and the power amplifier.

The device is especially recommended for beginner radio amateurs - amateur radio players and all interested in the receiving technology

Selected parameters:

• operating frequency 26.960 - 27.400 MHz
• 2.3 uV sensitivity
• an intermediate frequency of 455 kHz
• built-in power amplifier
• listening to the loudspeaker
• 1 W power output
• analog signal level indicator
• noise blocking system
• smooth volume and noise regulation
• circuit prepared for cooperation with the frequency synthesis module
• power supply - 12 Vdc
• printed circuit board and documentation included
  
  Detailed description in
  EdW 8/06