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Article on ham radio mobile operation from Andy D. Crouch N5NDD

All about amateur radio lincencing in India

Some Notes on the Slim Jim Antenna by Dave Coomber M0UXB

Iphone App with list of nearby repeaters in the UK, along with details of input and output frequencies, a map, and a handy bearing arrow for each repeater.

Hamradio page with pictures and links

a website by vu2fd with theory lessons, details on rules and regulations and planty of homebrew projects for radio amateurs, java calculators.

iPhone Software to practice taking your Ham Radio Exam

Ham Radio Class Exam question pool effective 7/01/2010 thru 6/30/2014

Discussion at eham about wire size used in wire antennas, and how it affects the gain of the antenna

Beginners guide and introduction to get started in ham radio if you live in India

A complete EmComm portable station article on eham.net by K9RFZ

MyHamPlace is a online amateur radio shop based in China dealer for Heilsound, Elecraft, MFJ, Yaesu , Kenwood and other popula ham radio brands

Presents the Holy Cluster, a contemporary DX cluster service offering real-time amateur radio spot data. This platform integrates a dynamic graphical map to visualize current contacts, enhancing situational awareness for DXers and contesters. Developed by an Israeli group of developers and supported by the Israeli Association of Radio Communication (IARC), the Holy Cluster aggregates DX spots from various sources, including traditional telnet clusters, the Reverse Beacon Network (RBN), and PSK Reporter, providing a comprehensive view of band activity. The cluster's design emphasizes a user-friendly interface for monitoring DX activity across multiple bands, including dedicated support for JOTA (Jamboree On The Air) operations. Its aggregation capabilities allow operators to quickly identify propagation openings and active stations, streamlining the process of making two-way radio contacts. The integration of RBN and PSK Reporter data offers insights into propagation conditions and station reception reports, which can be invaluable for optimizing antenna direction and operating strategies.

Eham user's review on the Heathkit SB-200 HF amp

The FieldComm Association, based in Central Virginia, operates as a specialized amateur radio club with a primary interest in emergency communications. Members engage in various technical aspects of radio, including digital modes, QRP operations, and DXing. The association provides a platform for hams to develop skills in field deployment and reliable communication under challenging conditions, often leveraging modern digital protocols. This organization's activities support the practical application of amateur radio for public service, emphasizing readiness and operational proficiency. Members collaborate on projects and share knowledge, fostering expertise in areas like portable station setup and efficient data transmission. The focus on emergency communications distinguishes its operational priorities from general interest clubs, aligning its efforts with community preparedness.

Graph of the frequency response of some of the legendary microphones favoured by radio hams

Presents the Amateur Radio on the International Space Station (ARISS) program, a global educational initiative facilitating direct communication between students and astronauts via amateur radio. It outlines the operational framework for scheduled school contacts, detailing the technical requirements for ground stations and the typical Q&A format used during these events. The program utilizes VHF/UHF frequencies for voice and packet radio communications, enabling students to engage with crew members aboard the ISS. ARISS supports various educational objectives, promoting STEM fields through hands-on radio experience. The resource provides information on how schools can apply for contacts, the selection process, and preparation guidelines. It also covers the history of amateur radio in space, including past missions and the evolution of equipment used on the ISS. Regular updates on contact opportunities, operational status, and technical specifications for ARISS hardware are provided.

A free small database program for Palm OS that allows you to log ham radio contacts. You can log the call sign, name, date, time and frequency of the contact.

N9TEW is supplier of vacuum tubes for ham,audio & antique radio purposes.

The QRZ.com callsign database serves as a fundamental resource for amateur radio operators worldwide, enabling rapid lookup of station information. Each entry, such as the one for _HB9DSP_, typically includes essential details for making and confirming contacts. Operators can find QSL routes, often indicating preferences like "via bureau or direct," which streamlines the exchange of QSL cards for award credit. Beyond basic contact data, these pages frequently offer insights into an operator's activities, including their participation in contests or DXpeditions. The platform also tracks metrics like "XML Subscriber Lookups," showing how often a callsign's data has been programmatically accessed, totaling **77670** for this specific entry. This functionality is crucial for logging software and other automated systems that rely on accurate, up-to-the-minute amateur radio data. While the page title mentions a "Home made multiband MOXON" antenna, the actual content primarily focuses on the callsign's biographical data within the _QRZ_ database.

Windows based programmer for the VX-170. Programming software for the yaesu VX-170

An online interactive grid square map made with openstreet map. Just point and click and zoom in to determine an accurate grid square locator till 10 digit resolution

Irish ham and Vhf radio info. Logs and maps worked, no excuses, this is mainly a VHF site

A amateur radio guide to RFI, ferrites, baluns, and audio interfacing by K9YC

Technical specification by Universal Radio

IARU Region 3 bandplan Revised 12 March 2019

A great resource for new Hams, those who want to become new Hams, or those who just need a refresher. The site offers some good video courses to help prepare for the exams.

The Amateur Radio Association of Bahrain (ARAB) was established in 1970 to support the amateur radio community within Bahrain, operating under the **A92C** callsign. This organization provided a central point for local hams, fostering activities and representing their interests for several decades. Its historical presence is noted, even though it is no longer active. Unfortunately, due to unforeseen circumstances, ARAB ceased its operations. However, a new amateur radio society has since been formed in Bahrain, continuing the tradition of supporting local hams. Interested individuals can contact Fawaz, **A92AA**, for details regarding membership and the new society's activities, ensuring continued amateur radio presence in the region.

30 Watt 50 MHz ham radio beacon de N6CA

75m Mobile Texas Bugcatcher Loading Coil Measurements

The G5RV junior Half Size antenna by kc8hps

This page is to provide links to resources and information regarding technologies to reduce computer interference

An off-center-fed sleeve dipole, made of CPVC and aluminum foil tape by KV5R

Indiana's fastest growing hamfest! Saturday, November 29, 2003

The club was established in 1975 with the purpose to further the exchange of information and cooperation between members, to promote knowledge, to prepare for service in the community in time of disaster or need for emergency communications,

Eham review for FT-1000d version

AL-811 and AL-811H specifications and information about this 600-800 Watt ham radio ower amplifiers

Chicago's oldest and best amateur radio club

CAT decoded Band decoder, remote Antenna switch

Monthly Amateur radio DX Peditions and Contest calendar at HamRadioWeb

22 Different Wire Antennas for the 160 Meter Band, Random Length Radiator Wire, delta loop, loop antennas, off-centered antennas, sloper, dipoles, Z antenna, Zepp and Clothesline Antennas

An interesting article on choosing the right battery when operating in portable mode, considering charging time and modes, weight and size.

An excel spreadsheet that in a really simple way checks how much to trim your antenna elements. Download the xls file and watch the presentation video include in this page

First pictures and links for the Kenwood TS-990S HF and 50 Mhz transceiver releases in May 2012

Microhams is a dynamic organization of hams in the Puget Sound area. The club includes a broad range of people from our local tech industry who participate in just about every aspect of our hobby.

This group is being formed to support those radio enthusiasts that already have experience in SWL, Scanners, or Citizen Band/FRS radio that would like to know more about becoming a Ham.

an homemade ultra lightweight Morse code keyer paddle that can be used as a manual straight key

Ham Radio cartoons of common situations

"Sked Wizard is an applet designed to help radio enthusiast get more enjoyment from their available operating time, ships with a list of ""radio related"" world band programs"

With spectrum analysis of beacon signals, it's possible to see features relating to various propagation phenomonen.