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A multimeter with standard resistance sorting function

An article on how to measure electrical current with a digital multimeter or analogue multimeter.

A portable setup of the ICOM IC-705 with portable VHF UHF and and HF Alex Loop antenna, managed with a portable Raspberry PI 3 setup.

Reichelt electronics is a world wide online shop for electronic parts and components

Log Online of the DX-Pedition to The Order of Malta's Italian Relief Corps (CISOM)

A Primer On Mics For Ham Radio. Difference between dynamic and condenser microphones, microphone plugs and differences in kind of microphones available on the market

Anatech Electronics manufactures RF filters for communication systems, Military and commercial, as well as RF filters for Wireless applications. Products include, Band pass filters, Duplexers, Low pass, high pass and bandstop filters. Additional products such as RF cable assembly also available.

Commercial VHF UHF antenna maker based in Brazil

RF Feedline (Coax and Ladder-Line) Loss and ERP Calculators made with Javascript. This complex feddline loss calculator has already several line types paramenters for most common coaxial cables from Belden, Time LMR, Wireman and other common products. Result will give Matches loss, SWR loss, dB and Watts power loss.

About Fusues, current and voltage rating, type of fuses

Outlines the Club de Radio Amateur de Charlevoix (VE2CCR), a regional amateur radio organization serving the Charlevoix area in Quebec, Canada. The resource details the club's objectives, which include promoting amateur radio, fostering technical knowledge among members, and supporting emergency communications. It lists various club activities such as regular meetings, field day participation, and local repeater maintenance. The site provides contact information for prospective members and details on how to join the club, including membership fees and application procedures. Information on the club's repeaters, including frequencies and access tones, is also presented, facilitating local amateur radio operations. The resource serves as a central hub for VE2CCR members and interested individuals seeking to engage with the amateur radio community in Charlevoix.

A CW Contest Simulator, a simulator for the weekly CWT contests sponsored by CWops, based on Arduino Nano

Navarro, Freestone, Limestone, Leon Amateur Radio Club aka The Navarro Amateur Radio Club

Introduction to homebrewing antenna, for AM FM band reception

Schematic drawing and instructions for the construction of a simple portable dipole for use in low power and portable operations

This presentation applies to HF / VHF / UHF antennas and is about 14 different type of antennas suitable for indoor od apartament installations

Learn how to build a simple 12vdc azimuth and elevation motor unit for the Arrow Satellite Antenna to improve your FM satellite communication experience. This DIY project involves using a camera tripod and basic materials like aluminum tube and standoffs. Get detailed instructions, including the gearhead motor product number for optimal performance. Discover where to purchase the necessary components and stay updated on alternative motor options. Enhance your ham radio operations with this homemade rotator setup, designed for easy satellite tracking and communication. Share feedback and connect with other radio enthusiasts for more tips and ideas.

Police Live Audio Feed from Elko City USA

Antenna Analyzer plus 500 is a multifunctional measuring instrument, very useful for amateur radio activity. Its size allows you to easily take it for relocation as well. Frequency range: 100KHz - 500MHz. Access directly via WiFi. Includes a dual-channel signal generator

The ICOM IC 7600 transceiver as successor of the IC 756 Pro3, resource page with many links and resources to the Icom top line HF transceiver

Greek Radio Amateur Station from Thessaloniki North Greece

Sri Lanka 4S7 March 2014

Information related to the G7IZU Radio Reflection Detection page. The detection of meteors, aurora and other phenomena through the use of signals reflected from ionization in the upper atmosphere.

Northern Connectors offers over 30 years of experience distributing specialized electro-mechanical connectors and related components, primarily serving industrial environments. The company partners with manufacturers such as _Binder_, _Hummel_, and _Mencom_, providing access to a broad range of connectivity solutions including circular connectors, heavy-duty connectors, and sensor cables. Their product lines are designed to address demanding technical requirements in various sectors, ensuring robust and reliable connections for critical systems. The resource details specific product categories like M5, M8, M12, M16, M23, and M40 connectors, alongside power and data transmission solutions. It emphasizes the availability of custom cable assemblies and overmolded solutions, tailored to unique client specifications. The site also highlights their technical support capabilities, assisting customers in selecting appropriate components for complex applications. Northern Connectors maintains a significant stockholding in the UK, facilitating prompt delivery of essential components. They focus on providing solutions that meet stringent industry standards for performance and durability.

DC filters from radius power are specifically optimized for applications with DC supply like e.g. photovoltaic inverters. Radius Power provides total power solutions, EMI filters solutions from design to manufacturing, Three Phase, Single Phase, Power Line, IEC inlet, Power entry modules Filters.

Clough-Brengle history, US company manufacturer of test equipment, amplifiers and accessories built and maintained by Ron Lawrence W4RON

Your World-Wide Source For Amateur Radio Amplifier Parts & Upgrade Kits for Collins, Dentron, Drake, Heathkit, Kenwood, Swan W8ZR, Yaesu Products

Complete plan for making a 2-meter J-Pole antenna. This drawing in PDF File includes a detailed list of the parts needed to assemble the Jpole antenna for 144 MHz.

Online Log for TX5N DX Pedition to Austral Islands 2022

Article with answers to common questions as what cable types to user, cable length, how to join ends.

The Traverse Bay Amateur Radio Emergency Communication Group

JT65 software download archive for all JT65 editions, includes a JT95 and JT9 operating mode informations, JT65 reference website for Japanese operators.

Lightning & Surge Protective Devices from Lightning Protection Corporation

Heil Sound PR-35 vs Heil Sound PR-781 vs Electro Voice Blue Cardinal by K4QKY

Leader in supplying digital signal processing (DSP) boards, systems, design services and OEM products for the Wireless, Scientific and Defense markets.

Design a parallel square stock balanced transmission line with this calculator.

A portal of QRSS images, automatically Updated with Active QRSS Grabberers

Author experiments end fed half wave antennas using common two conductore speaker wire, this article features a couple of end-fed halfwave wires for the 40M and 20M bands.

DXpedition to the island of Niue (OC-040) 16th May 2009 until 20th June 2009

AARC is an ARRL-affiliated Special Service club with a rich history of service to the Alamance County, North Carolina area.

CERT Communications Team Procedures Alinco DJ-191 quick reference in a four pages PDF file

Constructing a dual-band antenna for 40 and 20 meters often involves compromises in size or complexity. This resource presents a compact _open sleeve dipole_ design that addresses these challenges by using 450-ohm ladder line and folded elements to achieve a total length of approximately **17.17 meters**, significantly shorter than a full-size 40-meter dipole. The design leverages electromagnetic coupling, where a primary radiator handles the 40-meter band, and a second conductor resonates on 20 meters without direct electrical connection. This configuration eliminates the need for traditional traps, loading coils, or switching components, simplifying construction and reducing potential loss points. The antenna is fed with RG-58C/U coaxial cable, and a common-mode choke is recommended at the feed point to suppress sheath currents, ensuring a cleaner radiation pattern and minimizing RF in the shack. The design is well-suited for portable operations, field deployments, temporary installations, and restricted urban environments where space is a premium, offering solid performance on both HF bands.

Article about the microstrip patch antennas, and in particular the rectangular, single-polarization microstrip antennas, commonly abbreviated MSA.

A Shielded Low Frequency Loop Antenna, allows Simultaneous Transmission and Reception at the Same Site.

Homebrew Antennas, Transmitters, Receivers, Converters, Keyers and SWR/RF Current Indicators with photographs an excellent blog with many projects by VU2NAN

Manufacturer of software definded radio receivers, antenna switches, preselectors, antenna splitters based in Italy and USA

Exaustive review of the self-contained, top-performance HF/6m transceiver Icom IC-7700

A collection of 450 MHz Cheap Yagis that have proven great portable operations, back-packing and transmitter hunts, and are something inexpensive you can throw up in the attic for that weak repeater

The NanoVNA is a very compact handheld Vector Network Analyzer. The NanoVNA is tiny and portable analyzer, and it offers a high performance capabilities with an embedded lcd display.