how to arm and disarm your car remotely
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#wireless control
#RF module
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#transmitter
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MK414 SW Receiver
The original data sheet for the MK414 indicates that the maximum working frequency is approximately 4 MHz. SW transmissions are sufficiently strong that this receiver can effectively operate with signals up to about 6 or 7 MHz. A 10k resistor...
Receiver Audio Circuit
This simple receiver AF amplifier can supply several hundred milliwatts to an 8-ohm speaker. The gain is approximately 200X. If high gain is not required, C2 can be removed, resulting in a gain of 20. R1 and C6 are essential...
The AA8V/W8EXI 6CL6 One-Tube Transmitter
The operation of the 6CL6 transmitter is quite sophisticated despite the simple appearance of the circuit. The core of the circuit is the electron-coupled crystal oscillator. This circuit integrates the functions of an oscillator and amplifier into a single tube,...
tv transmitter
The transmitter operates within the VHF and VLF frequency ranges on TV channels, though it has not been tested for UHF frequencies. The modulated sound signal spans 5.5 to 6 MHz, which can be adjusted by tuning capacitor C5. The...
1watt AM/CW 10-meter band transmitter
In this project, you will make a simple 3-stage low-power broadcast-type circuit, using a crystal oscillator integrated circuit and a collector modulated AM oscillator with amplifier. You can connect the circuit to an electret microphone or amplified dynamic microphone. Using...
Simple Short-Wave Transmitter
This low-cost short-wave transmitter is tunable from 10 to 15 MHz using a ½J gang condenser VC1, which sets the carrier frequency in conjunction with inductor L1. Frequency trimming is achieved with VC2. The carrier signal is amplified by transistor...
MINI_ATV_TRANSMITTER
This low-power NTSC video and sound transmitter is suitable for amateur radio, video handheld transceivers, remote control applications, and surveillance purposes. It features a crystal oscillator-multiplier and a power amplifier. Video modulation is achieved through a three-transistor series modulator. The...
80 Watt stereo transmitter
This transmitter was designed from the ground up to provide very high sound quality, coupled with excellent frequency stability, reliability, etc. It can be used as a standalone transmitter to serve a medium-sized town, or as an exciter to drive...
Projects
This project was inspired by a desire to create something unique rather than with the expectation of it becoming a practical transmitter. At the time of writing, the project is in the breadboarding phase, and a decision has yet to...