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Perhaps this is one of the simplest and smallest FM Receiver that can receive the FM stations available locally. Its simple design makes it ideal for a pocket sized FM receiver. The output of the receiver drives a head phone.
This is a simple 27MHz FM-CB receiver built with TCA440 for listening CB ( citizen’s band ) transmissions with FM (frequency modulation). The selection is made with ceramic filters. This 27 MHz receiver works with an intermediary frequency of 455 kHz. The input filter is 27 MF type, so we obtain an acceptable attenuation of the mirroring frequency.
This is a fm radio receiver circuit which can be used with PC.
PC radio REGULATIONS
A) With the P1 we regulate the intensity of sound.
B) With the P2 we regulate the frequency of reception.
C) Optionally: If you want to check the frequency with your PC it will be supposed you make the following energies:
The integrated chip LM386 is a low power audio frequency amplifier requiring a low level power supply (most often batteries). It comes in an 8-pin mini-DIP package. The IC is designed to deliver a voltage amplification of 20 without external add-on parts. But this voltage gain can be raised up to 200 (Vu = 200) by adding external parts.
