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Home made LF converter, listen to signals below 300 KHz

Midwest Mountain Thunder CB Radio Group is a group of CB SSB operators that started in the Midwest as a branch off of the Washington State group. good clean radio

An interesting guide to aerials comparing height, gain and angles

The VU2BBB repeater, located in Matheran, Maharashtra, commenced operations in the late 1980s, a significant undertaking by the Bombay Repeater Society. This repeater facilitates VHF and UHF communications for local amateur radio operators, providing extended range and improved signal reliability across challenging terrain. Its establishment marked a key development in regional amateur radio infrastructure, offering a crucial node for local nets and general QSO traffic. The repeater's operational parameters include specific input and output frequencies within the 2-meter band, typically utilizing a standard offset. CTCSS tones are often employed to mitigate interference and ensure selective access for authorized users, a common practice for repeaters in densely populated areas. Regular maintenance and upgrades ensure _VU2BBB_ remains a reliable asset for the amateur community, supporting emergency communications and daily amateur radio activities. The _Bombay Repeater Society_ continues to oversee its operation, reflecting a sustained commitment to local ham radio services.

An introduction top operating on 160 meters band, article appeared on November 2006 issue of CQ, PDF file by K9LA

This antenna is designed for stations having a difficult time putting a decent signal on 160M from small or CC&R d lots. It is a 24.5 ft. vertical antenna, made from three 10 ft. PVC sections bolted together, and half wavelength of antenna wire helically wound around the PVC sections.

The short history of the SSN Smoothed Sunspot Number at Luxorion

G8EPR pye telecoms museum incorporating.. emeregency services & radiotelephone museum of great britain

TheSociety of Midwest Contesters formed early in 1985 with the goal of uniting Midwest contesters into a competitive group and to further the idea of radiosporting in the Midwest.

Features an immense gallery of color photos, facts, newsletters, articles and links for those interested in collecting or restoring antique radios

The No-Nonsense Extra Class License Study Guide (for tests given between July 2016 and June 2020) This is the study guide you want if you want to pass the Extra Class exam

A guide to properly use FT8 ALC and power when transmitting in FT8 Mode. Incorrect usage of power and audio from your computer may cause unreadable signals and transmit harmonics that can didturb other signals.

STØR Souther Sudan dx pedition july 2011

ZL2ARG Nelson New Zealand

A very well done presentation about End-Fed Half-Wave antennas. This PDF document contains a summary of experiences in how to build custom EFHW antennas. Includes an interesting comparison table of UnUn configurations with recommended toroids, Wire size, turns and capacitors. An useful recap on common errors in building homebrew EFHW Ununs completes the document.

Operating a QRP station in frigid conditions presents unique challenges, particularly concerning power management and equipment reliability. This resource outlines a specific winter portable configuration, focusing on maintaining operational capability when temperatures drop significantly. It details the use of a _Yaesu FT-817ND_ for digital QRP modes, paired with a _Raspberry Pi_ for digital signal processing and logging, demonstrating a practical approach to cold-weather field communications. The article provides insights into selecting appropriate power sources, such as LiFePO4 batteries, and managing their performance in sub-zero environments. It also covers shelter considerations, including tent selection and heating strategies, crucial for operator comfort and equipment protection during extended activations. The author, _OH8STN_, shares firsthand experience from Arctic Circle operations, emphasizing robust gear choices. Further content includes a video walkthrough, illustrating the physical setup of the station, antenna deployment, and the overall operational workflow in a winterized environment. This visual aid complements the written text, offering a comprehensive view of the entire portable station, from the transceiver to the power system and the protective shelter.

WA8MCQ modification for the Heathkit HW-7 transceiver

Pilot of The Airwaves

Using the RC-D710 Display with any HT The Display Head for the Kenwood D710 mobile APRS radio contains all of the APRS functionality in addition to the normal Radio control functions.

Basic anctenna theory, general information on antennas

The No-Nonsense Technician-Class License Study Guide for tests given between July 2014 and June 2018, download the free PDF by KB6NU

Just a whats happening in ham radio and things in my life here

In this article the author analyze six different type of VHF handheld antennas and as result of his self training on his new vector network analyzer published this interesting report

The Telegraph Office Magazine

Operating pedestrian mobile by G3XBM

This tutorial provides background information on the decibel and instructions for performing calculations involving decibels. This tutorial combines information from several authors, including Bob DeVarney, W1ICW; Walter Bahnzaf, WB1ANE; and Ward Silver, NOAX

How to make your HT last for days and get out like crazy

Dedicated to antique radio and their preservation

This article will explain a few of the ways author use an external SDR and Linrad to enhance his K3 experience. Linrad is one of many available SDR receiver programs. The same could be done with any radio that lets you access its IF frequency output. Article from NCJ Nov Dec 2019

Easy to use logging and keying software for CW and SSB, for HF and VHF. Contains the unique synthesized voice keyer.

Linux Open Source and ham radio for everyone blog

Articles for the sight impaired

Listing of North American Class 1, industrial,short line, tourist and transit lines. Includes a listing of all the frequencies sorted numerically.

The purpose of this article is to provide radio amateurs with enough background information to understand the technical challenges involved in small-station digital EME on the 144 and 432 MHz bands.

Interesting article on how Marc Van Stralen, PA1HFO, took the Drake TR-7 Transceiver to the Next Level.

How to build a low-pass filter to remove alternator whine from your car

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

Ramblings on amateur radio, flying, programming, martial arts, the Macintosh and who knows what.

Articles on the correct placement of ferrite noise suppressors are common, but little has been written about the different options and where to buy them. This page contains an interesting comparison of several ferrite types used to reduce RFI.

Franklin, Indiana

Use your Smartphone as an Oscilloscope to visialize signals from 150 Hz to 15kHz and as a Signal Generator to generate sinusoidal, square and triangular signals up to 15kHz

W4RAT based in the Virginia capitol city of Richmond.

How new technologies affect the art of contesting by DH1TW

Identifying The Drake TR-7 Differences and Versions

Article about the microstrip antenna, which is also commonly referred to as the patch antenna.

A blog about ham radio. A blog dedicated to cool stuff like ham radio, birdwatching and bus timetables

Founded in 1976, the Aroostook Amateur Radio Association was organized to foster support for those people interested in the hobby of Amateur radio.

D-Start site sponsored by Icom Uk

RSGB article for beginners. How to build a dipole antenna, construction tips and correct setup of inverted-ve dipole antennas