Category Archives: RF Circuit
Wireless FM Transmitter
USB Powered Wireless FM Transmitter Circuit
Here’s a Wireless FM transmitter circuit powered from USB ports that could be used to play audio files on a standard VHF FM radio. The transmitter circuit use no coils that have to be wound. This FM transmitter can be used to listen to your own music throughout your home. [...]
FM Receiver
One Transistor FM Radio Receiver Circuit
Here’s simple FM receiver circuit for a simple superregenerative FM radio. It is sensitive, selective, and has enough audio drive for an earphone. These designs generally have low component counts, however the design or my construction have been far from simple.
Emergency Radio
Emergency Crystal Radio
Crystal radio requires no power supply to operate because it uses energy from the signals it receives. Performance is – like one should expect – poor. Nevertheless, with a good antenna and proper ground, it shouldn’t be too difficult to tune to a strong AM station.
iTrip FM Transmitter
iTrip FM Transmitter Review
The iTrip FM transmitter for the iPod can play your music through any FM radio in your car, at a party, wherever the mood strikes you–and you have a radio. It’s clear that the iTrip is made specifically for the iPod. This gives iTrip advantages over similar devices. For example, with the [...]
Radio Transmitter
Radio Transmitter for FM Broadcast
Here’s easy to build high-quality PLL Radio Transmitter for FM broadcast, with typical output power of 5 W and no-tune design. The transmitter includes RDS/SCA input and Audio/MPX input with optional preemphasis. It can be used with or without stereo encoder. Tuning over the FM band is provided by two [...]
VHF Radio
VHF Radio FM Transmitter Circuit
Here’s a VHF Radio FM transmitter. This project is a simple VHF FM transmitter using only one crystal and will cover 145.00 to 146.00 MHz. The crystal is a 44.9333 MHz crystal for 145.500 receive, as used in the Trio (Kenwood) 2200, PYE, Motorolla, Tait equipment, to name but four. [...]
RF Wireless
RF Wireless FM Transmitter
Here’s a rf wireless FM transmitter can be built with simple, affordable and widely available parts. Construction is fun and much can be learned although performance is modest; for example, your voice gets difficult to hear at distances greater than 25 feet.
Recent Comments