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On-line Log for K5P DXpedition to Palmyra atoll 2016

Online log for A25HQ A25CF A25BI A25AN A25ZY A25DF A25MB A25SL A25UQ DX Pedition 2010

Homepage von Wilfried, DL8HAV

Electrical and electronics online calculators by Calculatoredge.com

Online calculator for J-Pole antennas. The J-pole antenna consists of a short and a long vertical pole with a feed point near the bottom. The antenna looks like the letter J, hence the name J-pole antenna.

Amateur radio clubs provide essential local support and foster community engagement for radio operators. The VE2CLM website serves as the online presence for the Club Radio Amateur de la Rive Sud de Montreal, offering information about club activities, events, and membership. It details upcoming gatherings such as monthly member meetings and the annual **Hamfest**, a significant event for local hams to connect and exchange gear. The site also features recaps of past events, including a video from **Field Day 2022**, showcasing the club's participation in emergency preparedness exercises and outdoor operations. The resource highlights the club's focus on regular interaction and event organization, with specific dates mentioned for future activities like the April 9, 2026, monthly meeting and the October 18, 2025, Hamfest. By documenting these events, the club demonstrates its commitment to active participation in the amateur radio community. The content provides practical information for members and prospective members interested in local ham radio operations and social events within the Quebec region.

2012 Ham Radio HK0NA DX Pedition to Malpelo Island, official site with hk0na online log

Online log NH8S Swains Island

Details on projects by WA3TFS published in QST magazine over the past few years. Includes an online shop with several ham radio kits, circuit boards, simple SDR transceivers

T30XG Online Log Kiribati 3rd June to 9th June 2010

Online Constant - k Lowpass Filter calculator

Select the toroid by material type and dimension of the toroid, the desired inductance and you will get the numbers of turns

Listen to online police scanner from Douglas County in Oregon USA

Amateur radio antenna maker with online shop based in Brazil

Documentary and seminar videos for and about Amateur Radio, on DVD and online. Some make excellent club meeting programs.

JD1BLY, 30 Apr to 7 May 2011 JG7PSJ (JD1BMH and JE4SMQ(JD1BMT))

Online web SDR from central part of Ukraine powered by OpenWebRX KiwiSDR at UR5VIB

Basic priciples of Yagi antennas and its variations like Quagi antennas, Quad antennas includes pictures, drawings and online calculators by KN9B

Personal pages, Dx activities and DXpeditions, logonline contest team II1R and II1H others

Upload an ADIF fiel and plot all worked grids in an online map. Support filtering by band, year and can export the output directly into a google map, or a google earth KML file

Mic online calculator , Microphone Dynamic Range Calculator, Microphone Sensitivity Calculator

Kevtronics is an ham radio shop online, sell Yaesu, Icom and Kenwood radios, LDG electronics products located in South Africa

online log of DX0DX DXpedition 2011

The Badger Contesters is a club of like-minded hams who are interested in VHF/UHF/SHF weak signal communications. Our geographic focus is Wisconsin, however hams in Northern Illinois, Michigan's UP, and Eastern Minnesota are welcome to join us.

Online internet HF LW MF web receiver based in Baden-Wuerttemberg cooperative state university Ravensburg Campus Friedrichshafen running a T2FD antennan under roof.

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

Amateur radio kits dealer, online shop for ham radio transceiver kits.

An online multiple calculator of 16 impedance matching networks

The W0IS resource outlines methods for finding historical US amateur radio call signs, particularly for genealogical research. It highlights the comprehensive collection of digitized call books from 1906-1996 available at leehite.org, stored as searchable PDF files. These resources significantly simplify what was previously a laborious manual search through physical call books, which were typically indexed by call sign rather than name. The guide details specific search techniques for various eras. For early radio days (1913-1923), government call books are readily available and searchable online via Google Books and hathitrust.org. For the period between the 1930s and 1980s, when private publishers like "Radio Amateur Call Book Magazine" dominated, the resource points to archive.org for scanned editions (1938, 1940, 1948, 1972) that support full-text OCR searches, despite potential scanning errors requiring flexible search terms. It also provides strategies for navigating Google Books' "snippet view" for the 1952 call book, including searching by name or address and interpreting often illegible snippets. The resource suggests cross-referencing findings with hamcall.net for call sign verification from 1921, 1954, 1960, 1969, and 1983 onwards. Additionally, it lists physical call book collections at institutions like the Pavek Museum of Broadcasting and individuals like W3HF, offering avenues for deeper research when digital methods fall short.

MaraOnline.org, the online home of the Mid-South Amateur Radio Association, which has provided service and training since 1939

Learn Morse Online in 40 lessons with this web based morse code learning program, based on the Koch method. Choose the lesson, adjust the wanted parameters, and start the transmission of a set of random characters based on chosen lesson. Recognize the code and verify it at the end of the lesson.

This antenna was conceived mainly for high-speed digital transmission via satellite. The antenna is made of two full waves loops , mounted at right angles to each other. Then coupled together, 90 degrees out of phase over a horizontal circular reflector. With this configuration the antenna is omni directional and circularly polarized.

Search on-line log for 9U4M Burundi DX Pedition

Electronic components online shop in German and Italian

LZ Open Contest Club - free membership, event's calendar, compare logs online

A world wide community of online SSTV cams shared and published on worldsstv.com

You can shorten a vertical antenna by using a loading coil. This online calculator tells you how the amout of inductance your loading coil will need to have.

H44G Log Online Solomon Islands Temotu Islands

Online log for TX7T DX pedition from Marquesas

DX Pediton to South Georgia VP8SGI Log Online IOTA AN-007

Online variometer calculator by IN3OTD

Search KH1/KH7Z Log online

PJ7I Online log for Sint Maarten DX Pedition 2011

An interesting article dedicated to hams that want to start learning morse code, including notes on Methodology, online training tools, and a guide to Morse Keys

This online map shows the IARU beacons. If the clock on your PC is accurate enough, it will also show which ones are broadcasting at the moment and on which band.

Calculate the inductance of twin lead online

The Chatham-Kent Amateur Radio Club Online

Log Online for N5J Jarvis Island DXPedition 2024 provided by clublog

Log Online ZL7/OE2SNL

Log on-line for T2GM DX Pedition