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Finding the the best ferrite material for a common-mode choke. How to create efficient ferrite cores and how to measure them

July 2012 DXpedition to Miquelon Op - Eric KV1J

SX5F DX-PLUS Hellenic Amateur Radio Team FARMAKONISI rocky Islet EU-001, 14 to 22 May 2011 & Lighthouse Farmakonisi,

Learn all about FT8 and FT4 digital modes in ham radio. Discover how to configure software to use these powerful modes for making contacts even in poor conditions. Find out how to hunt for awards and view instant statistics of your transmissions. Explore the benefits of using digital modes such as FT8 and FT4 for enhancing your ham radio experience.

Passive Bandpass Filter online calculator and filter formulas. Active Inverting Op Amp Bandpass Filters, Active Noninverting Op Amp Bandpass Filter, just enter the Low ir High Cutoff Frequency

This HOWTO explains in detail how you can use the Kenwood TS-590S USB, COM and ACC2 ports for digital operation, set up the radio for digital data and digital voice operation

OneSDR is an Education website with articles that simplify Software-defined Radio. Our goal is to demystify RF technology

PY0 Activation from 6 Dec 2012 till 10 dec 2012 - PY0FRP via PY7RP

A 30 cm antenna for the six meters band in japanese

This is an explanation of the intended way to use TR LOG with two radios in the ARRL November Sweepestakes, CW. The concepts and techniques presented here can work for you in other contests, as most of the ideas are the same.

HyEnd is a dutch amateur radio antenna manufacturer. Makers of the popular HyEndFeed Antennas, produce Baluns, bandpass filters and selle Line isolators, coax cables and connectors.

Free programming software for the Wouxun KG-UV6D and KG-UV6X.

This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized Broadside Array both the right and the left side of the Loop is a bent 1/2 wave dipole working 180 degrees out of phase with the other one and that gives you 4.15dbi of gain

A log utility for WSJT-X and JTDX Provides functionality missing from WSJT-X and JTDX and more

An article about the Beverage antennas, super long wire receiving antennas thar are unidirectional and have a very low noise that makes this antenna excellent for low band dxing. By Thomas R. Sundstrom W2XQ, 73, June 1981, 73 Magazine

The Dickson County Amateur Radio Club (DCARC) operates as a local organization for amateur radio enthusiasts in Middle Tennessee, providing a focal point for hams in the area. The club's activities typically encompass local nets, technical discussions, and support for emergency communications, aligning with the public service aspects of amateur radio. Members often engage in various operating modes and bands, sharing knowledge and experience to enhance their collective skills. Club members participate in field days, local contests, and community events, demonstrating the practical applications of amateur radio. These gatherings offer opportunities for new hams to gain practical experience and for seasoned operators to mentor others, strengthening the local amateur radio community. The DCARC serves as a hub for camaraderie and mutual support among its members, contributing to the vibrant ham radio scene in Tennessee.

HA0NAR is travelling to Guinea Bissau as J5NAR February 2013 qsl via home call

The TVDXA is a general interest and DX Amateur Radio Club serving the Chattanooga, TN and North Georgia area of the Tennessee Valley

This project enhances Arjan te Marvelde's uSDR-pico by integrating a waterfall display feature. By adding an ILI9341 240x320 2.4" TFT display and modifying the software, the goal is to provide a panadapter to the existing transceiver. Initially developed with Visual Studio, the code was later migrated to Arduino IDE for Raspberry Pi Pico compatibility. The focus remains on preserving the original software, primarily enhancing the dsp.c file for waterfall implementation.

Starter Code Plugs and Information for the New DMR User These code plugs were are set up specifically for three UHF repeaters in the York / Harrisburg, PA area. These are working examples only and to be used as guides.

Strictly Ham has a large retail presence in Australia and welcomes inquiries from New Zealand, the Pacific and Asia. Strictly Ham offers a comprehensive range of high quality Amateur, CB and Marine products, based in Victoria Australia

A spectrum analyzer is always an usefull amateur radio test equipment that should be present in a radio shack. Hams can use it for testing frequency response of filters, amplifiers, and other two-port RF devices. This article illustrate a tracking generator compatible with any spectrum analyzer in the Tektronix 490- and 2750-series lineups

Wisconsin UHF VHF scanning frequencies

Streamlining FT8 Operations with Automation. The WSJT-X Controller simplifies FT8 operations by automating repetitive tasks in conjunction with WSJT-X. Designed to enhance efficiency, it facilitates tasks like responding to CQs, managing late 73 decodes, and seamlessly integrating with JTAlert and other add-ons. The program allows users to focus on productive QSO tasks while optimizing FT8 performance.

Aircraft scatter is easily seen on the spectrogram window of digital communication apps, when you know what to look for. Examples of real aircraft scatter usage on six meters band

A simplified operating guide for the Yaesu FT-817

From buying an amateur radio transceiver, choosing the correct power supply, selecting the antenna and its feed line, to choosing the best microphone and accessories. A nice presentation for beginners.

Date: 3-17 Jan 2013 QSL via DJ4EL

Wuxi Venus Information Technology is an amateur radio devices dealer in China, source for high end, high performance RF products,Control products,APRS products and Commercial products. It provides a variety of solutions to the antennas systems, APRS,electronics kits and electronics components

Super Simple APRS Position Reporter. This project idea has been in response to the more hardware heavy Raspberry Pi projects that involve extra TNC hardware, additional sound cards, and custom cabling. This APRS position reporter is done using a Raspberry Pi B+, USB GPS receiver, Baofeng UV-5R, and a mono 3.5mm audio cable between the Pi and HT.

Modifying the Collins KWM-2 for Serious CW Operation, Make this old SSB workhorse perform like it should on CW.

A small active voltage probe antenna to aid reception on the LF bands

The basics of through-hole soldering, the tools needed, go over techniques for proper soldering.

Pass Recorder is a small application that records audio from satellite passes based on tracking data it receives from the commonly used SatPC32 application

An interesting article that compares tube amplifiers versus transistor amplifier.

Two easy to build microcontroller projects for machine recognition of hand-sent morse code

Testing the Icom IC-7700 on the mediumwave broadcast reception by VA7OJ

The Slim-Jim is a bit of a classic - building one is almost certainly a rite of passage and you will be glad that you did: It is easy to make, fairly easy to tune and rolls-up for transportation.

Amateur radio station in Parsons TN USA

Custom embroidered hats, shirts and jackets to Ham Radio Operators small businesses, ARES, ARRL and RACES clubs across America.

Pro-cell Co., Ltd was established in 1995 to produce and develop wireless components. In the beginning stage, we concentrated on producing GSM antennas, now produce Commercial- RFID, GSM UMTS GPRS LTE WLAN Wi-Fi Wi-Max, PMR & Tetra antennas

Yaesu FT-710 AESS MF/HF and 6-Meter Transceiver review on QST

The longest element has a total length of 14m and has a boom length of 5.5 meters featuring a total bandwith of 166 kHz

St. Paul Island DXpedition CY9C August 19-29, 2016

This antenna mast mount uses two Reese hitch extensions that are welded on to a piece of 2 inch square tube. It comes apart in two pieces. The vertical pipe on the left is welded on to a 2 inch piece of square tube that fits into the Reese hitch extension.

Learn how to register for a DMR ID on DMR-MARC and Brandmeister

What is antenna polarization, and why does it matter. Horizontal versus Vertical versus Circular polarization. Undestanding how antennas perform better with different polarizations.

Amateur Radio Club Elda Spain

ESR is located in the North East of England and was formed in the early 1980s offering customers a broad range of Audio-Visual, Electrical and Electronic Components and Accessories.

Online HF Communication prediction system provided by the Australian Governament Buerau of Metereology allow to predict usable frequency rage for radiocommunications between two stations allowing to specify frequency and date range. This tool allow calculation with different methods and algorithms