about 1 month ago - No comments
The FM module with USB function of Vire Silicon.Co Ltd is an excellent miniature FM module with USB input and digital display for functions. It is available as assembled board with remote.
D.Mohan kumar
The VIRE-FM 01C FM –USB Module is available as ready made assembled board. Its output can be connected to power amplifier or into More >
about 1 month ago - 1 comment
If you want to be independent of the local radio stations for testing VHF receivers, you need a frequency-modulated oscillator that covers the range of 89.5 to 108 MHz — but building such an oscillator using discrete components is not that easy. Maxim now has available a series of five integrated oscillator building blocks in More >
about 3 months ago - No comments
Veronica 1W FM transmitter is easy to build and to operate in FM. Veronica is also known for frequency stability, clean fm signal and uses no integrated circuit.
You may want to check this another 1W FM transmitter circuit.
Veronica transmitter is equiped with a mini-mixer and so you may forget an external mixer. This consist from More >
about 4 months ago - 1 comment
This 2 meter 144 MHz fox hunt transmitter is used in amateur competitions where a hidden transmitter is to be “hunted” using mostly homebrewed receivers and antennas. The foxhunt electronic circuit is the transmitter. It radiates a high quality signal without unwanted harmonics. Transistor T1 and the crystal togheter make the oscillator that generates a More >
about 4 months ago - 5 comments
The most important part of this 88-108 transmitter is the Colpitts oscillator. C3,C4,C5,C6,CD1-CD2 ans L1 determine the transmission frequency. The RF Oscillator circuit has the BF982 MosFet transistor wich is the active part. The others 2 transistors separate the VCO from antenna.
The first stage BF199 amplifies the weak signal from the vco and functions in More >
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