Bush VHF90
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Wireless On-Off Switch
Typically, home appliances are controlled using switches, sensors, and similar devices. However, physical contact with switches can pose risks, especially in the event of a short circuit. The circuit outlined here eliminates the need for physical contact to operate the...
Circuit diagramms of the 144 SBB/RX - Receiver
To comprehend the interconnections between the following circuits, it is essential to first review the concept chapter. It is at the discretion of the user to select one or two of these circuits for personal development. The discussion begins with...
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...
Radio Glen Transmit Selector system
The main box of the Transmit Selector system is designed to be located in the technical rack of a small radio broadcast station. There are four stereo balanced line inputs, either of which can be routed to a stereo balanced...
VHF Stability
The intelligent discussion of VHF systems necessitates an understanding of how VHF energy propagates through a system. At VHF frequencies, the wavelength is relatively short, calculated as F/983, where F is the frequency in MHz. For example, a typical 150...
Live Wire Antenna
Using live or neutral wire in AC household wiring as a receiving antenna is feasible only with a high-voltage capacitor inserted between the receiver antenna terminal and the live or neutral wire. This AC wiring antenna solution is often considered...
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...
RADIO CIRCUIT DIAGRAM
Radio Circuit Diagram Manual PDF Download.
The radio circuit diagram manual provides a comprehensive guide for understanding and constructing radio circuits. It includes various circuit schematics, components specifications, and operational principles essential for both beginners and experienced engineers in the field...
Car wireless alarm
This FM radio-controlled anti-theft alarm can be used with any vehicle having a 6- to 12-volt DC supply system. The mini VHF, FM transmitter is fitted in the vehicle at night when it is parked in the car porch or...