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Operating pedestrian mobile by G3XBM

Reducing and removing RFI Noise

A small amateur radio club located in northern Maine along the Saint John River.

This online calculator will give as output the Inductance L of a coil, including the total lenght of the wire needed to wound the coil. As input, requires the Diameter, number of turns, wire diameter and turn spacing

PowerFilm, Inc. develops and manufactures thin, flexible solar modules for OEM, military and consumer needs.

Kenwood TS-950SDX ESSB audio mods by voodoo labs

A folded dipole is an antenna, with two conductors connected on both sides, and folded to form a cylindrical closed shape, to which feed is given at the center.

The simple and convenient way to a custom front panel - even for single units. Custom-designed front panels and enclosures for electronic equipment.

Amateur radio blog from UK

One-Cubic-Inch Direct-Conversion Receiver

Instructions on how to install the Yaesu DVS 6 option module into a Yaesu FTDX 3000

Pirate radio stations broadcasting on shortwave radio. Chatrooms, pirate radio forums, shortwave pirate station loggings, information on pirate radio broadcasting, pirate FM broadcasting.

SWL and amateur radio by IZ1CRR

With Varying Frequency - Amateur Radio Ponderings

The **LDG Z100 Autotuner** review by GW6ITJ details the unit's practical application and performance in a ham shack environment. Initially acquired to replace an MFJ-902, the Z100 is noted for its ease of use, though the author observes it doesn't quite match the impedance range of the older MFJ unit. This hands-on assessment provides a real-world perspective on its capabilities for 100-watt operation across the HF bands. GW6ITJ specifically mentions the Z100's suitability for 3.5 MHz and higher frequencies, indicating its utility for common HF operations. The review focuses on user experience rather than technical specifications, directing readers to the LDG website for detailed data and manuals. This approach highlights the tuner's operational characteristics from a user's perspective. The author's experience with the Z100 suggests it's a reliable choice for general amateur radio use, particularly for those seeking a straightforward autotuner. The comparison to the MFJ-902 offers a valuable benchmark for hams considering a similar upgrade or new acquisition, emphasizing practical differences in impedance matching.

Making a CW QSO by John Shannon, K3WWP

The Delta Amateur Radio Society promotes the hobby of Amateur Radio in the community and encourages community involvement.

Electronic keyer by pressure sensor. SEN-09673 is used for detecting touch.

Article on propagation basics. The ground wave used for radio communications signal propagation on the long, and medium wave bands for local radio communications

This blog is maintained as a resource for the IOMARS and other persons interested in Amateur Radio.

Martek Power designs and manufactures a wide of high performance power supplies for various industries. Power supplies AC-DC, DC-AC inverters, DC-DC, EMI Filters

Multi-Polarized antennas for Land Mobile Radio, Indoor & Outdoor Networks, Home Wireless, Mining Communications, Remote Monitoring, HAM & Scanner, Cellular, WiFi, Wimax, M2M, GPS, LTE, and GSM.

Wfview is a program that allows many modern Icom ham radio transceivers (such as the IC-7300, IC-9700, IC-7610, IC-R8600 and many others) to be controlled via a computer. wfview shows the gorgeous spectrum display on whatever display is connected, including projectors, touch screens, and TVs. wfview allows for full radio control from a computer keyboard and basic control from a numeric keypad. It works under Windows, Linux and MacOS

RadioMasterList, a comprehensive receiver and transceiver directory. Performances and specifications for every radio set

The Oldest Amateur Radio Club in Oklahoma

All the essentials about the Dip Meter or Grid Dip Oscillator used for many RF measurements including detecting resonance, locating RF emissions, and making many RF measurements.

A club dedicated to Hellschreiber, or Hell, a unique, HF digital mode for sending and receiving text using facsimile technology

PilotMORSE is a great home solution for private pilots or aspiring professionals who want to hone their Morse code skills used to identify VORTACs, localizers, and marker beacons. PilotMORSE takes you through the alphabet with an advanced neural network algorithm that adjusts the pace of presentation based on your responses.

US National Communications Sports Frequencies

ARROW Communications Association Serving radio amateurs in Washtenaw and Wayne Counties

An article by microHam about guidelined to eliminate problems caused by RFI

Notes on how to properly install a Mini Whip receiving antenna in an noisy urban environment.

Kazmo’s Kustom Kreations a cool accessory - aka Outboard Heat Management Project by w4kaz

VHF Yagi antennas with low Q, extending the boom.

Ham radio blog in English and Dutch. The radio adventures of PE4BAS.

overview of radio signals and radiowave propagation and how different areas of the atmosphere affect radio communications.

An in-depth comparison here between the various digital technologies

Installation and assembly instructions for the multiband HF vertical Antenna by GAP

This guide focuses on soldering for the beginner and explains how you can solder a variety of components using a few different techniques - from the classy to the downright caveman.

Listen to Ingham County Michigan Public Safety, County Sheriff, Police and Fire

K2Net is a remote operation windows software for the Elecraft K2, and allow remote control over internet or wi-fi networks by G4ILO

The _Touch CPO_ circuit offers a unique method for Morse Code practice, eliminating the need for a physical key. It leverages the versatile IC555 timer, configured as an astable multivibrator, to generate an audio tone. Users can adjust the tone's frequency by manipulating a 100 K variable resistor connected between pins 7 and 6 of the IC555, providing flexibility in the practice experience. Volume control is achieved via a 10 K variable resistor, while a 1 K Ohms preset at pin 4 of the IC555 allows for fine-tuning the touch plate's sensitivity. The design connects the touch plate to the base of a BC147B transistor, a configuration noted for its flexibility regarding the length of wire between the transistor and the touch plate. The author's prototype successfully used a 9 cm wire with a 3 x 6 cm aluminum plate. This project also suggests an alternative application as a touch-operated doorbell, demonstrating the circuit's adaptability. The design emphasizes simplicity and ease of construction, making it accessible for hams interested in DIY electronics.

2N2/20 - A 20 Meter, Discrete Component CW Transceiver Built Manhattan-style

This is a discussion group for developers involved with the import or export of data formatted according to the ADIF standard for Amateur Radio Software.

Calculate atmosphere absorption attenuation, an EME tool by WK3UM

A home made cobweb antenna project made with easy to find parts 2-14 AWG speaker cables which are cut to 1/2 wavelength for each band and junction box with 4:1 Balun

Ham Radio news satire, in the style of "The Onion"

QSL Cards design and printing, offer free shipping and free graphic design from any quantity of photos and graphics

WAC DX Club founded in Holland in 1983. World Amateurs Club is one of the oldest CB DX Radio clubs with memberships all over the world

A blog mainly about my favourite hobby-amateur radio, shortwave listening and radio in its many forms.