Wideband AM Radio Receivers
#AM radio
#wideband
#receiver
#RF
#tuning
#demodulation
#antenna
#broadcast
#communication
#signal processing
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Trf Radio
This simple AM radio utilizes a Ferranti ZN414 integrated circuit and operates from a 9-V power supply. It features a 5-inch diameter ferrite rod as an antenna, which is wound with approximately 85 turns of #28 enamelled wire.
The AM radio...
LED RF Signal Strength Meter
RF Signal Strength Meter circuits are popular RF measurement devices. This circuit is one of the simplest but very useful circuits that satisfies your desired accuracy. The heart of measurement is high accuracy but easy to use Logarithmic Detector AD8313...
AM Radio Receiver schematic
Pictured above is a little AM superhetrodyne receiver that covers the broadcast band from 550 Khz to 1650 Khz. The circuit employs the 8 pin Signetics balanced mixer IC (NE602) which converts the incoming RF signal to the standard 455...
Sensitive RF Voltmeter Probe
Sensitive RF Voltmeter Probe Circuit. This circuit measures RF voltages beyond 200 MHz and up to approximately 5V.
The sensitive RF voltmeter probe circuit is designed to accurately measure radio frequency (RF) voltages in the range exceeding 200 MHz, with...
Radio circuits built
This receiver is a modification of Charles Wenzel's Two Transistor Reflex Radio. Instead of a ferrite AM loopstick antenna, a magnetic loop antenna is used, and an LM386 amplifier stage has been added to drive an 8-ohm speaker. A switch...
Simple Direct Conversion Receiver
A low-cost continuous wave (CW) superheterodyne receiver operates with a 4.00 MHz intermediate frequency. While there is no automatic gain control (AGC) or RF gain control, the receiver demonstrates good large signal handling capabilities. The design incorporates six bipolar transistors...
Wideband RF Field Strength Meter
A field strength meter is highly beneficial when dealing with RF devices. It allows for the rapid diagnosis of transmitter circuit functionality and can detect RF signals present in the environment. The simplest form of a field strength meter can...
tune coil
Tuning a system is typically a challenging task. The user must power the system, observe the spark length, shut it down, adjust the primary tap, restart, and repeat this process until the spark length is optimized. However, using a tuning...
Parts and schematic for an AM radio transmitter
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