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RF (Radio Frequency) Transmitter Circuits, Page 3
RF (Radio Frequency) Transmitter:   #'s       A - F       E - O       P - Z

Last Updated on: Thursday, November 30, 2017 04:30 PM


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

HAM Radio BFO -  circuit diagram of beat frequency oscillator using BF494 and how to listen amateur radio communication on ordinary BC receiver..(added 01/05)
Hear Amateurs on your FM Radio! -  amateur radio construction projects…. [from Peter Parker's website]
Interference Canceller -  This is a Radio Astronomy Project… [from Radio-Sky Publishing's web site]
LED RF Signal Meter -  (circuit added 6/07)
Light Sensing RF Transmitter -  Photo sensor is placed in series with a resistor…. [Tony van Roon's circuit]
Light Sensitive Alarm Circuit -  The circuit detects a sudden shadow falling on the light-sensor and sounds the bleeper when this happens. The circuit will not respond to gradual changes in brightness to avoid false alarms. The bleeper sounds for only a short time to prevent the battery running flat. Normal lighting can be used, but the circuit will work best if a beam of light …....
Long Range FM Transmitter -  The power output of many transmitter circuits are very low because no power amplifier stages are incorporated. The transmitter circuit described here has an extra RF power amplifier stage, after the oscillator stage, to raise the power output to 200-250 milliwatts. With a good matching 50-ohm ground plane antenna or multi-element Yagi antenna, this transmitter can provide reasonably good signal strength up to a distance of about 2 kilometres.... [Submitted by Viswanathan Prakash 29-1-10]
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Low Distorition RF FM Generation & Detection Using Hyper-Abrupt Tuning Diodes -  (circuit added 6/07)
Low Frequency Phasing Exciter -  As of this writing, two programs are available for data transmission at low frequencies that use a computer sound card and output the audio in an I/Q format. JASON  has a unique FSK format with a variety of data rates. The "DigiMode Terminal" in Spectrum Laboratory  generates PSK and MSK signals suitable for LF work. If you are new to all of this, check out the Low Frequency Transmission Mode article on this site.... [Design by John K. Andrews   Holden, MA FN42ch   [ w1tag@charter.net ]
MicroPower FM BroADCasting Circuits -  (electronic design added 9/02)
Multiband CW Transmitter -  Circuit / schematic (added 02/05)
NanoMount Switches for Microwave Applications -  (circuit added 6/07)
One Channel ADC for Radio-SkyPipe and Data Collect Lite -  This is a Radio Astronomy Project… [from Radio-Sky Publishing's web site]
RF (Radio Frequency) Transmitter:   #'s       A - F       E - O       P - Z


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