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New Zealand Radio DX League

Operating the AO-51 amateur radio satellite with a handheld transceiver (HT) presents a practical entry point for newcomers to satellite communications. This resource details the necessary steps and considerations for making basic contacts, focusing on accessible equipment. It covers fundamental concepts such as _Keplerian elements_ for satellite tracking and the importance of understanding Doppler shift effects on both uplink and downlink frequencies. The tutorial outlines a straightforward approach to satellite passes, emphasizing the use of readily available gear. It provides insights into antenna orientation and timing for successful two-way communication. The content aims to demystify satellite operation, enabling operators to achieve their first **AO-51** contacts with minimal specialized equipment. Key aspects include frequency management and basic operational techniques.

A free PDF from NASA about cubesat. Basic Concepts and Processes for First-Time CubeSat Developers. A great introduction document dedicated to Cubseat developers.

qrpTracker is a satellite tracking program that works on the popular and easy-to-program Arduino platform qrpTracker is meant for amateur satellite enthusiasts and computing hobbyists

West Georgia Amateur Radio Society, Inc

Band pass filters, for radio frequency interference problems.

About SSB Audio by N4KC

Mounting solutions for amateur radio. Cup holders, vent mounts, windows mate, HT holders.

Analyzing digital mode contacts, particularly those made with _WSJT-X_, often requires tools beyond the native logging capabilities to identify duplicates or perform deeper statistical analysis. This utility addresses that need by providing an external application that processes the _WSJT-X_ log file, typically _wsjtx_log.adi_, to extract and present contact data in a more flexible format. It demonstrates how to parse ADIF data from a popular digital mode program, offering insights into contact patterns and potential logging errors. The software facilitates the identification of duplicate QSOs, a critical function for contesters and DXers aiming for unique contacts. It also enables further analysis of the log data, which can be useful for tracking band slots, modes, and specific callsigns over time. The application provides a practical example of how external tools can augment the functionality of primary logging software, allowing for custom data manipulation and reporting that might not be available within the original program.

Setting up Digital voice keyer via USB for Kenwood TS-590

Rigpix page on the YAesu VX-6R include link to Yaesu VX-6R Manual

Search the online log for 9X0T 9X0Y DX Peditions 2018

Link page to all kinds of packet radio related sites

Germany manufacturer of solar energy products

Homebrew 30 meter full quarter wave vertical antenna.

Discover the huge amount of components inside Compact Fluorescent Lights

Ten-Tec groups at Yahoo!

A home made 50 MHz KW power amplifier project with picture and PCB schematic by W6PQL

A 600W 1.8 MHz to 54 MHz power linear amplifier made using rugged MRF300 transistors featuring output power between 580W and 750W depending on band, power supply: 48V, 18A typical, 20A max

This code practice oscillator project uses a 555 timer IC. Includes a Schematic Diagram of the morse code oscillator

Ham radio blog from CX3SS Uruguay

US amateur radio antenna manufacturer. Produce baluns, delta loops, dipoles, ocf antennas and more

Indoor setup of a two element SteppIR antenna

KB6NU end-fed, half-wave antenna article and project

Microwave antennas, cables, connectors, accessories

Build and run your own ADS-B receiver for 100 USD with a Raspberry Pi

A report on working a CQWW SSB on 40m with a vertical buddipole antenna

Provider of electronic components documentation. Offer a reliable tool to find semiconductors components technical information like parts, datasheets, cross reference, obsolete and new circuits.

A review of the chinese QRP HF transceiver X1M SSB/CW RTX

A homemade band pass filter for the 30 meter band based on the original VE7BPO design

Charlie Papa India RhAne-Alpes & Bourgogne HQ

Paulo Sousa ham radio blog with QSL pictures

KK5DR review of the IC-7700 HF ICOM Transceiver

A project to implement a simple and efficient CW Keyer and a side tone generator with Arduino

A manufacturer of standby and prime power generator sets for industrial, telecommunication, commercial, small business, mobile and residential applications.

An interesting presentation of a real multiband Fan Dipole antenna, optimized for better DX operation performances, considering the terrain, position, DX destination path and other influencing factors

Ham radio yagi beam antennas manufacturer based in NY USA. Produce monoband and multiband yagi antennas fot HF and VHH

Some modifications for the Tigertronics Signalink USB sound card radio interface

Kenwood TS-590S QST review comments and table comparison vs Elecraft K3

Ham radio dealer. Antennas, connectors, books, maps baluns and spare antenna components

A mini Dxepidition to Piel Island on 24th/25th of May 2008 by the CQ CQ Portable group and the call sign will be GB0PIA.

Ararat Shrine Radio Club of Kansas City

Amateur radio repeater scanner at Pomona California

Javascript filter design page with introduction to low pass filters by k7mem

Full color QSL printer in Poland

MF TeleType is a program for amateur radio digital communication via sound card, ham radio chat program for extra reliable text transmissions over long distance

Investigates the legal framework surrounding **pneumatic antenna launchers** in Victoria, Australia, specifically their classification under the Firearms Act 1996. The author, VK3KBC, details how these devices, designed to discharge a projectile by compressed air, are defined as 'firearms' and subsequently categorized as **Category E Longarms**. This classification carries significant penalties for unregistered possession or use, with the author noting the lack of provisions for amateur radio operators to legally possess and use such devices for antenna deployment. The author shares personal experiences needing such devices for portable HF radio operations, contrasting them with previously legal slingshots and current alternatives like kites or bow and arrow. VK3KBC outlines efforts to advocate for legislative change, including submissions to the Wireless Institute of Australia (WIA) and the Victorian Department of Justice, proposing an amendment to Section 3(i) of the Firearms Act 1996 to include amateur radio field operations as an exempted use. The resource also reviews the original intent of the Category E firearm classification, suggesting that pneumatic antenna launchers may have been assigned this category in the absence of a more suitable alternative.

Dedicated to serving for all rotator parts needs. Stock and provide rotor parts for antenna rotators from companies such as Alliance, C.A.T.S., CDE, Channel Master, and Hy-Gain, both young and old.

Spectrum Microwave is a market leader in the world of RF & Microwave components and system

This calculator is designed to give the critical information of a particular beam antenna, in this case a three element Yagi, for the frequency chosen.