W7IUV Amplifier Card
No description available.
Dual AC radio remote control switch circuit diagram
The circuit diagram illustrates a dual radio remote control switch system. The transmitter section features Q3, which generates a high-frequency carrier signal, while Q1 and Q2 form the oscillator circuit. Pressing switch SW1 results in an oscillation frequency of 5...
RF amplifier and filter for 144 MHz
The RF amplifiers utilize noiseless feedback through the drain-gate capacitance, incorporating an inductor in the source lead to achieve the necessary 90-degree phase shift between the gate voltage and channel current. The first RF amplifier provides approximately 4 dB of...
RF amplifier and filter for 2.5MHz
By using transformers, both voltage feedback and current feedback can be applied. An article by DJ2LR Ulrich Rohde in Ham Radio, November 1979, provides details about this circuit. For the 2.5 MHz to audio converter, the transformation ratio from drain...
QSK 2KW
The QSK-2KW is an external RF T/R interface device that connects to any RF vacuum tube amplifier. It provides full high-speed RF amplifier T/R switching for CW or digital break-in operation. The QSK-2KW requires a low current keying input, allowing...
The CIRCLOMOS
Unfortunately, only RF amplifier devices are available, with the lowest frequency being 10 KHz.
The circuit in question pertains to RF (radio frequency) amplification, specifically focusing on devices that operate with a minimum frequency threshold of 10 KHz. RF amplifiers...
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...
Q-Switch Driver
The Q-Switch driver for an old YAG laser failed. A replacement was over $1000, so a custom driver was built for less than $300 (see picture and schematic below). The specifications required were at least 20W into a 50-ohm load...
50mhz 300w mosfet amplifier circuit
An RF power amplifier is an electronic amplifier used to convert a low-power radio-frequency signal into a larger signal of significant power, typically for driving the antenna of a transmitter. It is optimized for high efficiency, high output power (P1dB)...
15W - 30W RF Power Amplifier KT922 KT930 KT934
This RF amplifier ensures the power required to boost a small transmitter. Depending on the input RF power, power supply, and transistor, this amplifier can boost the signal.
The RF amplifier is a critical component in various communication systems, designed to...