We're developing the previously posted Wireless FM transmitter, hoping to make it even more "powerful," as it's nicknamed, "the sophisticated wiretapping device." Therefore, we've added a mic amplifier and another RF amplifier for power output to the existing basic circuit. This will increase the sensitivity of the mic as the wiretapping device and extend its range. And of course, this Wireless II version is an improvement over the previous version, intended to be even more sophisticated. Is that true? Let's prove its awesomeness...
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After it was assembled, and...it was truly powerful. The mic sensitivity was much greater, as was the transmission range. At the time, I used a piece of cable no longer than a meter long. Anyone want to try assembling it again? Please do...
Wireless FM Layout. 3 Volt power source from 2 batteries.
The microphone sensitivity can be adjusted as needed by adjusting the VR trimpot on the 10kHz. If using it as a microphone, keep the setting low to ensure good sound. If using it for wiretapping, adjust it to your liking. The result is that even the smallest sounds—crickets, the ticking of a clock, or the faint call to prayer—can be heard clearly on an FM radio monitor. Wow!
Additional Post
Okay, bro... I've included the circuit diagram. Have fun creating...
During a test drive, this wireless receiver could clearly pick up signals from a distance of 20m without an antenna. The range is even better when connected to an antenna with a 50-100cm or longer cable.
Fulfilling Requests
Representing several requests via mobile phone, some requested a simple layout, without the stripe. He...he...he said, "Here I show you one without the stripe and in black for easy tracing. Let's all keep working hard for our nation to progress.
Great
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