Long term FM Transmitter
#FM transmitter
#long range
#wireless communication
#RF circuit
#broadcast
#antenna
#signal transmission
#frequency modulation
#electronics
#DIY
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300m fm transmitter circuit design project
This FM transmitter circuit is very simple and has an acceptable transmission range. The signal transmitted from this FM transmitter circuit can be received at almost 300 meters in open air. The circuit requires a 3-volt operating voltage and can...
MePADS
If you are considering building the Desert Ratt 2, it is advisable to read all the accompanying text, as it contains relevant construction details. Engaging with the comments and replies can also provide additional insights, as previous blog posts have...
Understanding FM transmitter circuit
Wireless FM Transmitter. The site provides some explanation on how the circuit operates; however, there are uncertainties regarding certain components, including the electret microphone and the frequency modulation process. The electret microphone operates at a current of 200 µA, which...
88-108Mhz FM Radio Transmitter
The modification presented involves using a 2N2219 NPN transistor to replace T2 and a 2N3553 NPN transistor to replace T3. Both transistors are categorized as VHF transistors. It is necessary to attach a heatsink to the last transistor. No additional...
an active whip receiving antenna
In the pursuit of effective small antennas, an active whip antenna was constructed. This compact vertical antenna is linked to a preamplifier, which serves to convert the high impedance of the 50-ohm receiver and coaxial cable. Various designs exist for...
Antennas
The antenna used for receiving or transmitting is a crucial component in a communication link. Its performance significantly influences the effectiveness of both the receiver and transmitter. Antennas are reciprocal, meaning an antenna designed for transmission can also function for...
Simple FM transmitter powered by 1.5V battery
This simple FM (frequency modulation) transmitter is powered only by a 1.5V battery and utilizes a single transistor. The frequency of this transmitter is controlled by the L-C resonance circuit and operates within a range of 80 to 110 MHz....
two stage fm transmitter bug more tank circuits
These two tank circuits appear to broaden the operating spectrum. The accompanying information sheet indicates that when both circuit stages oscillate at the same frequency, the power output reaches its maximum. This suggests that if the tunable tank circuit matches...
2 Watt FM Transmitter
The circuit is a radio frequency (RF) oscillator functioning at approximately 100 MHz. Audio signals captured and amplified by an electret microphone are routed to an audio amplifier stage constructed around the first transistor. The output from the collector of...