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RF (Radio Frequency) Transmitter Circuits, Page 2
RF (Radio Frequency) Transmitter:   #'s       A - F       E - O       P - Z

Last Updated on: Thursday, December 07, 2017 02:04 PM


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

A 12 GHz Super-Easy Radiotelescope -  This is a Radio Astronomy Project… [from Radio-Sky Publishing's web site]
A Basic RF Transmitter for PIR Sensors -  (circuit / schematic added 6/05)
A to D Circuit for Amateur Scientists (Not for Radio-SkyPipe Use) -  This is a Radio Astronomy Project… [from Radio-Sky Publishing's web site]
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…. [Tony van Roon's circuit]
AM DSB Transmitter for Hams -  circuit diagram of simple double side band suppressed carrier (DSBSC) transmitter for hams. Circuit uses...
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.....
Analysis of NMR/MRI Coils using PIN Diode Switches -  (circuit added 6/07)
Antenna Switch for Dicke Switching Receivers -  This is a Radio Astronomy Project… [from Radio-Sky Publishing's web site]
Antennas for Ham Transmitters -  Describes how to construct various type of antenna for Ham Radio Transmitters.
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Assorted RF circuits -  several circuits here, spend some time and view each of them
ATV Repeater Controllers -  (electronic schematic / circuit added 4/02)
Automatic message sender for CB -  (circuit added 6/07)
Automatic Repeater -  Circuit designed by Miroslav Adzic.  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 circuit]
Basic VOX Circuit -  A recent look at some of the budget priced HF transceivers revealed that they were missing a VOX. Although most of these budget priced transceivers performed admirably, it would certainly be nice to have VOX capability. Figure 1 is a basic VOX circuit which will perform very well once the VOX level is set correctly.  This circuit is low cost and all parts can be found at your local Radio Shack store.... [Radio Amateur Society of Norwich]
Bob Sickel's Antenna Switch for Dicke Switching Receivers -  This is a Radio Astronomy Project… [from Radio-Sky Publishing's web site]
Building a Simple LF Exciter -  (Circuit design added 8/03)
Building an RF Remote Control System -  ....
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.... [Radioland.nt.au]
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%.
Ceramic Filter BFO -  Receive SSB and CW transmissions on your BC receiver. Simple BFO is build around 455 KHz Ceramic Filter.
Cheap Log Periodic Dipole Array -  This is a Radio Astronomy Project… [from Radio-Sky Publishing's web site]
Coilless FM transmitter! -  ....
Combination-Controlled fully customizable RF remote Control -  (electronic circuit added 09/05)
Compact 20 14 MHz Direct Conversion Receiver -  amateur radio construction projects…. [from Peter Parker's website]
Crystal radio -  Schematic only, no circuit description
Crystal radio -  (circuit added 6/07)
Easy 2 Meter Transmitter -  This project is a simple 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, Motorola, Tait equipment, to name but four. The frequency of the crystal is not critical as almost any other Xtal for the 2-meter band will function.... [from Harry Lythall's website]
Filter simplifies software defined radio -  3-Dec-07 Issue of EDN  A Linear Technology LTC1992 filter replaces four op amps in the signal chain of a software-defined radio.... [Design Idea by John Wendler and Ray Tremblay, Tyco Electronics, M/A-Com Wireless Systems, Lowell, MA]
Four Transistor Tracking Transmitter -  Schematic and parts list only, no circuit description included…. [Tony van Roon's circuit]
Four-way remote control uses series transmission 01/18/01 EDN-Design Ideas....A simultaneous fourway remote-control system adheres to size,  cost, and reduced-complexity   constraints and uses a series transmission to drive parallel loads (Figure 1). You can use….PDF has several circuits, scroll down…. [Design Idea by JM Terrade, Clermont-Ferrand, France]
RF (Radio Frequency) Transmitter:   #'s       A - F       E - O       P - Z


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