RF Transmitter Electronic Circuits

RF (Radio Frequency) Transmitter Circuits, Page 2
RF (Radio Frequency) Transmitter: #'s A - F E - O P - Z
Last Updated on: Friday, March 12, 2010 12:07 PM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

A Basic RF Transmitter for PIR Sensors - (circuit / schematic added 6/05)

Active FM Antenna Amplifier - This amplifier will pull in al distanat FM stations clearly. The circuits is configured as a common-emmitter tuned RF preamplifier wired around VHF/UHF transistor Q1….(Tony van Roon's schematic added 10/06)

AM/FM/SW Active Antenna - This circuit shows an active antenna that can be used for AM, FM, and shortwave SW. On shortwave band this active antenna is comparable to a20 to30 foot wire antenna. This circuit uses receivers that use untuned wire antennas, such as inexpensive units and car radios....(added 4/02)

Analysis of NMR/MRI Coils using PIN Diode Switches - (circuit added 6/07)

Assorted RF circuits - (circuit / schematic added 6/05)

ATV Repeater Controllers - (electronic schematic / circuit added 4/02)

Automatic message sender for CB - (circuit added 6/07)

Automatic Repeater - This circuit will be of interest to radio amateur and anyone possessing two radios, (one of which must be able to transmit i.e. a transceiver). It is a self powered (audio derived) repeater circuit for receiving a signal and re-transmitting it via or radio. (added 10/05)

Basic RF Oscillator #1 - This basic circuit is eash to build and the components are not critical. Most of them can be found in your junk parts box….(Tony van Roon's electronic schematic / circuit added 4/02)

Building a Simple LF Exciter - (circuit design added 8/03)

Building an RF Remote Control System - (electronic circuit added 04/05)

Car Anti-Theft Wireless Alarm - This FM radio-controlled antift alarm can be used with any vehicle having 6to 12-volt DC supply system. The mini VHF, FM transmitter is fitted in vehicle at night when it is parked in car porch or car park. The receiver unit with CXA1019, a single IC-based FM radio module, which is freely available in market at reasonable rate, is kept inside. Receiver is .... (added 10/05)

CB Transmitter - For the regulation it needs a voltmeter (with needle better) and charge 50W/5W. Connect charge 50W in the place of aerial, with the voltmeter in the exit voltmeter. Be supplied the transmitter with + 12V. It will be supposed we have consumption between 0,7-1A. With a screwdriver we regulate the core of inductor L1/L2 and later the variable C6 until we see the biggest tendency. We connect the microphone and speaking we observe the clue in the multimeter. If all have become right will be supposed the tendency, speaking, to go up roughly 30-35%.

Coilless FM transmitter! - (electronic circuit added 10/05)

Combination-Controlled fully customizable RF remote Control - (electronic circuit added 09/05)

Compact 20 14 MHz Direct Conversion Receiver - (electronic design / schematic added 2/05)

Crystal radio - (circuit added 6/07)

RF (Radio Frequency) Transmitter: #'s A - F E - O P - Z