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CB Radio guide by International Radio Dx Group. Only available for members of this group.

Italian page about a home made a 1 to 40 balun with pictures and measurements on HF bands.

Article showing how I've made a mains filter to reduce EMC in the electricity supplying my shack. I've used a type 31 Fair-Rite ferrite core and the video shows how this performs on 160m through to 40m.

How to build a slingshot antenna launcher. Slingshot antenna launchers are used to launch a line over a tree branch, so antennas can be suspended from high up trees

Professional & amateur observations

The webpage provides guidance on working 6 Meter DX, focusing on effective operating habits, preparation, and knowledge of the band. It emphasizes the importance of monitoring, clear frequencies, and using CW for weak signals. It also mentions the significance of knowing countries and individual stations on the air to increase chances of working DX. The page recommends utilizing resources like newsletters and websites to stay updated on 6-meter activity and offers suggestions for improving operating skills.

Opinions on the cushcraf R7 multiband vertical antenna at radiobanter

Pictures and description for a perfect soldering.A tutorial on soldering technique includes videos.

Using a home made 10 element 435 & IO Loop for 145MHz, with a Yaesu FT-847. Simon - 2E0HTS, adjusts his (uplink) transmitted signal to correct the doppler of the Received (downlink) frequency.

Building a 1:1 balun, aka un-un, with an Amidon Ferrite toroid core T 200

Chart showing how SWR effects how much power you actually radiate from your antenna.

This database is not a logging program. It is intended to collect information about the HAMs that you know. You just record the call sign and name of a HAM that you meet. Later you can use QRZ to look up the call sign to validate that it matches the name.

The Meteor Scatter tips and tricks described here are based upon more than 20 years of active MS operation

IC8POF's How To index, Hamradio mods, Crazy PA Tuner project (transform any manual amplifier in an automatic one).

This article will help the New Ham to be more at home on repeaters and understand the operation and procedures on Ham Radio Repeaters.

How to homemade a multi-band HF dipole using 100 meter of speaker wire, 2 strandsm including a homebrew 1:1 choke balun

How to build a QFH (Quadrifilar Helix Antenna) to download images from weather satellites. A complete tutorial on assembling QFH antenna at home with simple and common tools

Quick and Dirty CW Netiquette

The practice of converting computer server power supplies to make a very high quality high power supply at low cost is attractive. It doesn't normally require any modification to the supply but the hard part is figuring out how to trick them into turning on.

In this article the author provides some guidelines on how to solve a common problem when stacking different types of yagi antennas on the same mast, limiting the effects on gain and radiation pattern of both antennas

An illustrade article that try to explain with simple concepts how and why rhombic antenna work.

How to connect and key Power Amplifiers to Kenwood TS 590 or TS 990. How to home made custom Remote cable to key power amplifiers by JG1VGX

Basic guide on soldering techniques, tips and tricks

Key facts about how to solder, how to solder wire, how to solder pcb's, and including general soldering techniques and the best ways of making good solder joints for electronic circuits and construction. Includes video

Frequencies and location of every meteo radiosonde launching centres in Europe. Equipments, antennas, history, SondeMonitor and BalloonTrack tutorials

Mounting antenna close each other. Distance calculations and tips on setting up antennas by KB9VBR

Excellent article and guide to choose the best RF power amplifier that fit your needs by ON4SKY

Instructions on how programming a regency scanner model R1060

This video will provide a foundation for understanding how power amplifier circuits work. If you are new to High Frequency Power Amplifier Circuit Design, this is the place to start.

How to construct a Sniffer for 2m band

How to become an amateur radio ? by ON4SKY Review of general conditions to get licensed, examinations, regulation, CW, foreign calls, and more

Another general tutorial on BPL

How to calculate range for a VHF antenna with a simple formula and how to increase VHF coverage.

A look behind the scenes, learn how the ARRL laboratory evaluates new products, and what all those numbers mean to you by WA1SVF

How to understand resistor colour codes

The document explains the technical aspects of how the Internet Radio Linking Project (IRLP) works, focusing on the use of VoIP streaming software under the Linux operating system. It details the audio sampling, compression, transmission, reception, and playback processes involved in IRLP communication.

An article and buyers guide about antenna anlyzers, undestanding differences among popular RF analyzers in the market

A guide to learn how oscilloscopes work

Eham article by Vince Waelti (K9TSU)

An homemade antenna tuner project that should be small, easy to build and cheap. This automatic antenna tuner can work as locale or as remote. The tuner has EEPROM memory for store settings for faster tunning and four interfaces

A youtube video instructions on how to replace, the Select knob. Very often this know wobbles after some years of usage and in this video is well documented all passages needed to replace the knob.

Moonbounce is the ultimate long path DX. It is exciting and allows you to literally work the world on VHF and UHF. It is not as difficult as you may think. Here is how to get started on this most exciting mode

Official kenwood document explaining proper procedure to upgrade firmware on a Kenwood TS-590S

How is your SWR - determine the power loss to expect for a given SWR, includes an excel spreadsheet by n3ujj

In this article, author examine stresses placed on common-mode chokes (aka baluns) as hams use/abuse them, examine the efficiency of simple dipole multi- band antennas and their feed systems. Stressing a Balun.

There are a number of important technical issues relating to the matching of speakers to amplifiers, and to the wiring of multiple speaker systems

How GPS works

How to build and properly wound an efficient RF choke to protect antenna controller in mobile setups

The Doppler Effect allows the distance between a satellite transmitting from space and a radio receiver on the ground to be measured by observing how the frequency received from the satellite transmitter changes as the satellite approaches, passes overhead, and moves away.

A guide to measuring SWR with different types of SWR Meters, the single needle and dual needle meters