Advertisement
MSF radio time receiver – Circuit Schematic
MSF radio time receiver
How to use the Galleon System modules to build a radio time receiver to use the 60 kHz MSF time signal from the atomic clock at Anthorn Cumbria.....
A simple way of phase locking microwave local oscillators – Circuit Schematic
A simple way of phase locking microwave local oscillators
The circuit is presented as a starting point - there will be some experimentation needed for each individual case. For the popular microwave bands the LOs are u...
Hi-fi AM detector – Circuit Schematic
Hi-fi AM detector
A modification to David Knight`s linear detector circuit. I wanted to build a "hi-fidelity" AM receiver and needed an ultra-linear AM detector for it. Here is t...
Racal RA17C18 – Circuit Schematic
Racal RA17C18
The RA17C18 is modified version of the RA17C12, having a delay compensated IF amplifier and an additional IF output. It is a North American version of the RA17,...
LSB Conversion of RT321 and RT320 HF Sets – Circuit Schematic
LSB Conversion of RT321 and RT320 HF Sets
The RT320 and RT321 Clansman HF sets are designed for Upper Side Band (USB) operation only. This conflicts with the Amateur radio convention which is to use LSB...
AD9850 DDS Module Motherboard – Circuit Schematic
AD9850 DDS Module Motherboard
Supports LCD Module (16x2 HD44780) Includes AVR Micro ATMEGA168 programmed with demo/test code. Top Quality US made PCB (w/Solder mask, Plated through holes, Ro...
Phase Locked Loop Voltage Controlled Signal – Circuit Schematic
Phase Locked Loop Voltage Controlled Signal
...
Phase Locked Loop Phase Detector – Circuit Schematic
Phase Locked Loop Phase Detector
...
Simple FM Radio with improved audio gain – Circuit Schematic
Simple FM Radio with improved audio gain
Wind 6 turns of solid wire on a pen or pencil that is just under 1/2 inch in diameter. Remove the wire from the pencil and spread the winding to make a length o...
Simple receiver with microvolt sensitivity – Circuit Schematic
Simple receiver with microvolt sensitivity
The three-transistor circuit in Fig 1 costs less than $10 to build, uses commonly available components, and consumes less than 10 mA from a single 9V battery. I...
AM Transmitter Circuit – Circuit Schematic
AM Transmitter Circuit
...
3W FM Transmitter Circuit – Circuit Schematic
3W FM Transmitter Circuit
This is the schematic for an FM transmitter with 3 to 3. 5 W output power that can be used between 90 and 110 MHz. Although the stability isn`t so bad, a PLL ca...
CB transmitter – Circuit Schematic
CB transmitter
L1, L2 Wires of coper (smaltwme`na) with diameter 0, 4mm wrapped in plastic support of diameter 6-7mm of perjstrofjkoy` core. For the L1 you wrap 13 coils. For ...
3W FM Transmitter – Circuit Schematic
3W FM Transmitter
This is the schematic for an FM transmitter with 3 to 3. 5 W output power that can be used between 90 and 110 MHz. Although the stability isn`t so bad, a PLL ca...
HF/VHF LCD PIC16F88 SWR Bridge – Circuit Schematic
HF/VHF LCD PIC16F88 SWR Bridge
...
DIY Micromitter Stereo FM Transmitter – Circuit Schematic
DIY Micromitter Stereo FM Transmitter
This new stereo FM Micromitter is capable of broadcasting good quality signals over a range of about 20 metres. It`s ideal for broadcasting music from a CD play...
DIY 100mw TV Transmitter Printed Circuit Board (PCB) – Circuit Schematic
DIY 100mw TV Transmitter Printed Circuit Board (PCB)
The circuit design guiding ideology can debug without any RF instrument, its performance can not be achieved the indicators of professional equipment, but its p...
BA1404 5W FM Transmitter Power by Fmuser Guanghzou China office – Circuit Schematic
BA1404 5W FM Transmitter Power by Fmuser Guanghzou China office
Circuit with a few components, only four to form a miniature wireless FM microphone, a more stable operating frequency, firing range of more than 10 meters, 1. ...
A simple and effective short-wave antenna amplifier circuit – Circuit Schematic
A simple and effective short-wave antenna amplifier circuit
This amplifier is the outdoor type, line installed outdoors, the amp`s main line; Figure 2 is the indoor power line box. Indoor and outdoor use between 50 ohm o...
88-108mhz FM transmitter circuit production PCB – Circuit Schematic
88-108mhz FM transmitter circuit production PCB
C4, L form a resonator: resonant frequency is the FM transmitting power of the microphone, according to the parameters of the diagram component transmission fre...