how to build your own am transmitter
#transmitter
#RF
#AM modulation
#broadcast
#antenna
#oscillator
#audio input
#radio waves
#electronics project
#DIY
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4 Band Double Tuned Preselector
The circuit requires an RF input, which can be sourced from either a long wire or a loop antenna. The preamplifier operates within a frequency range from 550 kHz (Medium Wave) up to 30 MHz in the shortwave band. The...
14W CW TRANSMITTER
A low-power two-stage FET transmitter designed for the 80-meter amateur band utilizes a Pierce crystal oscillator that does not require an output resonant circuit. A DC milliammeter can be connected across a 150-ohm resistor in the gate circuit of the...
Active Antenna
Antennas that are much shorter than 1/4 wavelength present a very small and highly relative impedance that is dependent on the received frequency. It is difficult to match impedances over a decade of frequency coverage. Instead, input stage Q1 is...
LA1061M Antenna Switching Diversity Circuit For FM Tuners
The LA1070 is an automatic gain control integrated circuit designed for use with automotive on-glass antennas. It is produced by Sanyo Semiconductor Corporation.
The LA1070 operates by automatically adjusting the gain of the antenna signal to maintain a consistent output level,...
Wideband Active Antenna Circuit
A whip antenna measuring between 30 to 50 cm is capable of receiving signals from 10 MHz to over 220 MHz. The circuit incorporates a BF981 dual-gate MOSFET (T1), which offers low noise characteristics, high input impedance, and enhanced performance.
The...
RF Dummy load
The load described here is capable of handling up to 10 watts of RF power for a couple of minutes and is designed for the widely used 50 ohms impedance. It consists of ten parallel connected 560 ohms 1 watt...
radio mf tx
There has been a longstanding interest in constructing a simple VXO transmitter, though concerns regarding the limited tuning range typically associated with VXOs on busy HF bands have been present. The capability to switch between multiple crystals and cover various...
Transmitter RF Output LED Indicator
Transmitter RF Output LED Indicator Circuit Diagram. This RF output detector circuit, which includes a visual indicator, can be useful for an RF application.
The transmitter RF output LED indicator circuit is designed to provide a visual representation of the RF...
ic transmitter
FM transmitter IC manufacturers and suppliers include FM transmitter IC manufacturers with Bluetooth capabilities. The FM transmitter features an integrated circuit with four channels. The TNA029 IR audio transmitter IC is a low-cost solution with high performance.
The FM transmitter integrated...