LA1800 portable am and fm radio circuit
No description available.
Low Frequency Antennas
Homemade antennas can significantly enhance the performance of AM and FM radios, short-wave receivers, and scanners. For enthusiasts of talk radio, experimenting with AM band antennas can lead to the ability to receive broadcasts from across the country with surprising...
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An Instruction and Reference Book on Radio and Television, Coyne Electrical and Television-Radio School, 1951
This publication serves as a comprehensive instructional and reference guide focused on the principles and practices of radio and television technology as taught by the Coyne...
Q- Multiplying Loop Antenna
This circuit is designed to be used in conjunction with the standard 4 foot square loop used in MW for long distance reception.
The described circuit is intended for use with a standard 4-foot square loop antenna, optimized for medium wave...
Wideband RF Amplifier
This circuit consists of wideband RF amplifiers that utilize current-feedback components such as the THS3202. The THS3202 was selected for its fast slew rate and wide bandwidth. The amplifier voltage gain of this circuit is 20, while the stage voltage...
An AM RF Amp for External Antennas
I have no idea whether the RCA 40468A FET is still available or not. It came in a 4 pin metal can - with the 4th pin connected to the substrate. I have successfully substituted other N-channel devices, such as...
SA608 SA608 Low Voltage High Performance Mixer FM IF System
The SA9614 is an RF amplifier utilized for signal conversion and automatic laser power control (ALPC) between the CD optical pickup head and the decoding chip. The SA9614 incorporates an interface for the CD optical diode RF signal amplifier and...
Broadcast-band-rf-amplifier
The circuit features a frequency response ranging from 100 Hz to 3 MHz, with a gain of approximately 30 dB. Field-effect transistor Q1 is configured in a common-source self-biased mode. An optional resistor R1 allows for the adjustment of the...
Simple long-distance wireless FM microphone circuit
The loop antenna L1 is utilized for emission and also functions as the oscillation coil. The high-frequency current flowing through the antenna is synchronized in resonance with the oscillation frequency, ensuring optimal emission performance. Practical applications indicate that the effective...
wave antenna circuit
The circuit illustrated here demonstrates that, despite advancements in components and technology, it remains possible to design effective and intriguing circuits. This design utilizes two well-known transistors, the BF256C and the BF494. Along with the necessary resistors and capacitors, these...