TV Transmitter with Audio
TV Transmitter with Audio If you are interested to build TV transmitter for your electronic project this Advanced TV Transmitter With Sound designed by Tetsuo Kogawa could be good idea for you. TV...
View ArticleVHF FM Aircraft Receiver
VHF FM Aircraft Receiver VHF FM Aircraft Receiver is a superregenative receiver developed for listening to FM transmitters but also tunes the aircraft band and the top portion of the FM broadcast band....
View ArticlePocket Receiver with ZN414 & LM386
Pocket Receiver with ZN414 nbsp; This device is very similar to the one being described in the previous project. The most important difference is that the LF signal exiting the ZN414 does not go to the...
View ArticleFM Broadcast Receiver
FM Broadcast Receiver Here's a portable FM broadcast radio receiver for reception of FM broadcast band based around FET transistor. The topology is a classic grounded-gate FET VHF Hartley oscillator....
View ArticleCrystal Detector Radio Receiver Set Varactor Varicap Capacitor Diode Tuned
Crystal Detector Radio Receiver Set Varactor Varicap Capacitor Diode Tuned Traditionally, in a crystal detector radio tuned circuits, a mechanical type variable capacitor is used. For those of you who...
View ArticleTDA7000 FM Receiver TV Tuner
Parts: 1x TDA7000 IC - FM Receiver 1x 3.5 Turns Variable Coil (L1) 1x MV2105 - Varicap Diode ANT - Telescopic Antenna or a piece of wire 1x 100K Potentiometer 1x 100K Resistor 1 x 22K Resistor 3x 100nF...
View ArticleDirect SW Receiver for AM, AM-SSB & CW Signals
Direct SW Receiver for AM, AM-SSB nbsp; Home » Radio » Direct SW Receiver for AM, AM-SSB CW SignalsAdvertisementSSB stands for Single Side Band, which signifies the amplitude - modulated signal which...
View ArticleFM / AM Regenerative Receiver
FM / AM Regenerative Receiver The following is a design for a separately quench super regen receiver I first tried in early 1992. It worked far better than any other solid state design, so I built a...
View ArticleRF Field Strength Meter
RF Field Strength Meter Most transmitter has several variable capacitors which are used to match impedance for transistors and antennas. I know people hate trimmers and so did I. The reason is that it...
View ArticleSimple FM Transmitter Bug
Simple FM Transmitter Bug This is a simple design of a small FM Transmitter Bug that's perfect for transmitting and eavesdropping purposes. Due to the high sensitivity, even the ticking of the clock to...
View ArticleRF Field Strength Meter with Attenuator up to 200 MHz
RF Field Strength Meter with Attenuator up to 200 MHz RF Field Strength Meter with Attenuator up to 200 MHzThe RF field meter unit is a great help to tune transmitters for best performance and output...
View ArticleRF Preamplifier
RF Preamplifier Input needs only several mWatts (e.g. BF900) - 300 mWatts OUT. This schematic is a often used buffer. It's easy to build, clean and cheap. When you want even more power, you can replace...
View ArticleSAA1057 PLL Synthesized FM Transmitter
SAA1057 PLL Synthesized FM Transmitter The functioning of all is provided by a microcontroller from MICROCHIP PIC16F84 which provides support for buttons, LCD 2 lines of 16 characters and the circuit...
View ArticlePLL Stereo FM Transmitter
PLL Stereo FM Transmitter The circuit shown here is of a good Stereo FM transmitter that can transmit high quality signals up to a range of 70 feet. The circuit is based on BH1417 PLL stereo...
View ArticlePortable FM Transmitter
Portable FM Transmitter This portable FM Transmitter is easy to build. I have used a pair of BC548 transistors in this circuit. Although not strictly RF transistors, they still give good range....
View ArticlePrescaler with Counter
Prescaler with Counter Digital frequency counter is being used for wide range of applications. Digital frequency counter extensively uses digital circuits and hence fairly good knowledge of digital...
View ArticleSimplest FM Transmitter
Simplest FM Transmitter This simple FM Transmitter takes audio input through a 1/4 phono jack and, constructed as shown, without the optional antenna connections, will broadcast an FM radio signal...
View ArticleSensitive FM Transmitter Bug
Sensitive FM Transmitter Bug This easy to build FM transmitter bug can transmit voice to exceptionally good range. Tune trimmer to hear the signal to your near radio. Transmitter frequency range is...
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