ZN414 portable am receiver
No description available.
Farnsworth Model GT-051 Bakelite Radio (1948)
"Black Beauty" is a nickname for a classy Bakelite radio set. It features a dramatic, asymmetrical design with deep wraparound louvers and a bullet-like profile, exemplifying 1940s Streamline design. The radio is undergoing restoration of its electronics and cabinet. Originally,...
The Mainline TT/L FSK Demodulator
The term "demodulator" is becoming a standard in both commercial and military sectors. "Converters" are often associated with devices that automatically transform Morse code into RTTY, convert 8-level signals to 5-level, or adjust baud rates from 50 to 45, among...
TBA120 Demodulator Circuit
The TBA120 Series integrated circuits (ICs) offer a high-gain limiting intermediate frequency (IF) amplifier and a quadrature coincidence detector in a single package. These ICs are primarily designed for the extraction of television intercarrier sound, which is frequency modulated onto...
Rf Preamplifiers Circuit
In this basic MAR-x-based circuit, both the input and output consist of a single DC-blocking capacitor (C1 for the input and C2 for the output, respectively). The DC power supply network, which includes L1 and R1, is connected to the...
The ATL-3 Loop Antenna
All ATL-3 loop windings are centre tapped and balanced w.r.t. their amplifier/receiver chassis ground, and therefore electric field interference pick up tends to self cancel. Magnetic noise fields, e.g. televisions and the electric meter box, or electromagnetically radiated interferences, may...
AM portable Reciever Using ZN414
This is a circuit diagram of a portable AM radio receiver utilizing the ZN414 integrated circuit (IC), which has been replaced by the MK484, offering identical performance and pin configuration. The receiver is designed to operate within the medium wave...
1-2Mhz broadcast transmitter
T1 is a low impedance output transformer with a conversion ratio of 5000 to 8 ohms.
The low impedance output transformer, T1, is designed to match the output of an audio amplifier to the impedance of the speaker load. The specified...
Command receivers
The Command radio refers to the radio function used for communication between aircraft rather than a specific model. The "Command" function facilitated communication within the aircraft, while the "Liaison" function was intended for communication back to base. The distinctions between...
Dave Richards AA7EE
As a follow-up to the previous post, it was discovered that the Sony SRF-59, although inexpensive, offers surprisingly good performance due to its creative receiver architecture. Research was conducted on external antennas to improve reception of weak stations. Among the...