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Most Popular
Do You Need an Antenna Tuner
Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format
Ferrite information
Ferrite Toroidal Cores, Magnetic Properties of Ferrite Materials, EMI - RFI Suppression Design Considerations, Ferrite Beads, Ferrites for RFI Ferrite Cores for RFI Suppression by CWS ByteMark
Using ferrite for interference suppression
Excellent guide to using ferrite cores for interference suppression. Understanding and Solving RF Interference and Noise Problems by Jim Brown K9YC Audio Systems Group, Inc. PDF File
Coil Inductance Calculator
Calculate the inductance of a single-layer, air-core coil.
Toroid Winding
Winding Toroids can be a real hassle for those of use who are left-handed or not so dexterous as we once were.
A Modern Thermocouple Ammeter
Thermocouple ammeters are very rare these days, but the job they were perfect for - measuring antenna currents - is still a modern requirement especially in respect to groundplane currents. By David A. Reid PA3HBB G0BZF
Winding Toroids
A Guide to safely wind toroidal cores by vu2fd
Ferrite on Reducing RFI
Using ferrite to reduce radio frequency interference with your PC monitor or antennas with your receivers or transceivers.
Electronic Construction Tutorial
Everything you wanted to know about building stuff but were afraid to ask." This series was originally published in "73 Amateur Radio" between November 1997 and February 1998
Electronic Links
10 Amp 13.8 Volt Power Supply
Sometimes amateurs like to home brew their power supplies instead of purchasing one off the ...
Votes: 3 | Rating: 9.67
A Brief Treatise on the Decibel
An article on origin and usage of the Decibel that has always been a logarithmically ...
By W5YR
A high perfomance Crowbar Circuit
The MC3423 can protect sensitive circuity from power supply transients or regulator failure when used ...
A Modern Thermocouple Ammeter
Thermocouple ammeters are very rare these days but the job they were perfect for measuring ...
Votes: 2 | Rating: 6
A quick polarity tester
A little gadget was found in an article in QST made with 1 pair of ...
A Tutorial on the Decibel
This tutorial provides background information on the decibel and instructions for performing calculations involving decibels ...
By W1ICW - Votes: 1 | Rating: 7
Capacitors and their uses
Different type of capacitors or condensers and description of the various types and their uses ...
Votes: 1 | Rating: 10
Circuit Laws
Basic electronic circuit laws, capacitors, resistors, power circuits examples
Votes: 3 | Rating: 5
Coil Inductance Calculator
Calculate the inductance of a single-layer, air-core coil.
Votes: 24 | Rating: 5.3
Common mode current
Balanced and Unbalanced Systems
dB: What is a decibel?
Decibels dB dBA dBC dBV dBm and dBi What are they all How are they ...
Votes: 2 | Rating: 2
DC Buss Box
A DC buss distribution box, make it yourself for less than $10
Votes: 1 | Rating: 7
Delabs technologies Product Design and Engineering
Around 200 electronic circuits in pdf format or images There are also over 1000 links ...
By Anantha Narayan - Votes: 2 | Rating: 7
Do You Need an Antenna Tuner
Maybe yes maybe no It all depends on the type of antenna and feed line ...
Votes: 12 | Rating: 4.58
Electromagnetic Radiation Explained
by Jim Hawkins - WA2WHV How Radio Waves Are Born
Votes: 2 | Rating: 6
Electronic Circuits and Design Information
Descriptions summaries and tutorials about electronic circuits and electronic circuit design including amplifiers attenuators logic ...
Electronic Construction Tutorial
Everything you wanted to know about building stuff but were afraid to ask This series ...
Votes: 4 | Rating: 5.75
Electronics and Radio Today
Electronics and Radio Today for electronics and radio information projects parctical information and introductory articles ...
By Ian Poole - Votes: 69 | Rating: 6.81
Ferrite information
Ferrite Toroidal Cores Magnetic Properties of Ferrite Materials EMI RFI Suppression Design Considerations Ferrite Beads ...
Votes: 4 | Rating: 5
Ferrite on Reducing RFI
Using ferrite to reduce radio frequency interference with your PC monitor or antennas with your ...
Glossary of Terms for Crystals
Common terms used referring to crystals
How Radio Works
Excellent slides explaining radio and radiowaves generation basics
Votes: 4 | Rating: 9.75
Inductors and their uses
Different types of inductors a brief description of the various types and their uses ...
Votes: 2 | Rating: 5.5
Introduction to spectrum analyzer
Explains the fundamentals of swept tuned super heterodyne spectrum analyzers and discusses the latest advances ...
By Shilpa - Votes: 5 | Rating: 5
KAM Repairing
Repairing a KAM interface changing two capacitors and transistors by IK5PWC
Votes: 1 | Rating: 7
Making printed circuits
To make smart looking PCB s all you need is a computer a laser printer ...
Votes: 3 | Rating: 5.67
Measuring Inductances with a Freqeuency Counter
This article also shows how you can make your own measurements that are as good ...
Votes: 3 | Rating: 2.67
Negative feedback output circuit
Negative feedback is often referred to as shunt feedback in conjunction with emitter degeneration ...
Votes: 1 | Rating: 10
PCB with kitchen appliances
Cheap and relatively easy way of making professional quality printed circuit boards at home ...
Votes: 2 | Rating: 5.5
Radio-Electronics.Com
Information and tutorials about all aspects of radio and electronics including propagation ham radio electronics ...
By Ian Poole G3YWX - Votes: 8 | Rating: 8.13
Recovering parts from surplus
What electronic parts you can recover from PC monitor VCR CD ROM FDD HDD Laptop ...
Votes: 2 | Rating: 5.5
Resistors and their uses
A general overview on resistors and their uses
Return Loss, SWR, Power Gain and Loss Calculator
A neat tool for your daily ham activities around the shack
Votes: 8 | Rating: 2.37
Scot's Guide to Electronics
Index of main electronics topics
Votes: 2 | Rating: 6.5
Simple anti-static device
With all the wire you have out you may run into a problem with static ...
Votes: 1 | Rating: 1
Simple Reverse Polarity Protection
This simple modification is applicable to pretty much any 12 volt operated positive earth equipment ...
Skin depth and Conductors
Article about shields Litz wire braid and skin depth It is still being expanded ...
Soldering guide
Guide to soldering an desoldering
Votes: 3 | Rating: 9.33
Toroid Winding
Winding Toroids can be a real hassle for those of use who are left handed ...
Votes: 5 | Rating: 7.8
Transformers
Description of what is a transformer and winding types
Votes: 1 | Rating: 10
Tubes 201
How Vacuum Tubes Really Work
Votes: 2 | Rating: 9
Using Bipolar Transistors As Switches
While transistors have many uses one of the less known uses by amateurs is the ...
Using ferrite for interference suppression
Excellent guide to using ferrite cores for interference suppression Understanding and Solving RF Interference and ...
Votes: 6 | Rating: 9.5
Voltage protector/Fuse Assembly for 100-watt transceivers
A compact voltage protector/fuse assembly for 100-watt transceivers by AD5X
Votes: 1 | Rating: 10
Voltage Regulator From Discrete Components
Votes: 6 | Rating: 7.67
Winding Toroids
A Guide to safely wind toroidal cores by vu2fd
Votes: 1 | Rating: 10
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