Amateur radio and related links.

Amateur Call Sign Databases



International amateur radio call sign data base. http://www.qrz.com/


Buckmaster Ham Call

A comprehensive world wide amateur radio call sign database




Amateur Organisations


International Amateur Radio Union

Created in Paris, France, the International Amateur Radio Union has been the watchdog and spokesman for the world Amateur Radio community since 1925. http://www.iaru.org/index.html


International Telecommunication Union

The United Nations organisation which coordinates all telecommunications regulations (including amateur radio) worldwide. http://www.itu.int/home/index.html


The Wireless Institute of Australia

The Wireless Institute of Australia is the World's first and oldest National Radio Society, being founded in 1910. http://www.wia.org.au/


American Radio Relay League

ARRL is the national membership association for Amateur Radio operators of the United States. http://www.arrl.org/


Radio Society of Great Britain

The RSGB is the UK's national society for all radio amateurs. http://www.rsgb.org/


NZART - New Zealand Association of Radio Transmitters
NZART represents New Zealand Amateur Radio operators nationally and internationally. http://www.nzart.org.nz/


RAC - Radio Amateurs of Canada
National organization, representing the interests of amateur radio all across Canada. https://www.rac.ca/


IRTS - Irish Radio Transmitters Society
IRTS is the national society for radio amateurs and experimenters in Ireland. http://www.irts.ie/cgi/index.cgi


ARSI - Amateur Radio Society of India

ARSI is the national association for Amateur Radio Operators in India. ARSI is recognized internationally for representing Indian Amateur Radio activities in international fora. http://www.arsi.info/


RAST - Radio Amateur Society of Thailand

RAST is the national association for Amateur Radio Operators in Thailand. http://www.qsl.net/rast/


SARL - South African Radio League

The National Association for Amateur Radio in South Africa proudly serving Amateur Radio since 1925. http://www.sarl.org.za/Default.asp


Southgate Amateur Radio Club

Since its original inception in 1936 as the Southgate and Finchley Group of the RSGB, the aim of the Southgate Amateur Radio Club has been to hold meetings, bringing together persons interested in Amateur Radio or Electronics generally, and to foster the spirit of Amateur Radio. http://www.southgatearc.org/index.htm



AMSAT-NA is the Radio Amateur Satellite Corporation, the North American branch of the international amateur radio satellite community. http://www.amsat.org/



Amateur Station Sites



DX News - is the largest information portal dedicated to amateur radio. Here amateur radio enthusiasts from all over the world share news and valuable DX information. Here you will find the last news about DX, DX-peditions, IOTA activations and contests.



DF9CY Amateur Radio Station.

Christoph Petermann DF9CY's site is devoted to VHF/UHF Amateur Radio activities including EME.



EI9GQ Amateur Radio Station.

The purpose of this site is to promote homebrew radio and to encourage radio enthusiasts to build their own equipment. 



G3XBM QRP Radio Station.

My main interest at the moment is WSPR mode beaconing especially on 137kHz and 500kHz. WSPR is an ideal mode for experimenting with homebrew equipment and propagation.



HB9BBD Amateur Radio Station.

Cutting edge radio technology and EME site. 



K0BG Alan R. Applegate.

A Web Site For Mobile Amateur Radio Operators. 

This site is dedicated to mobile amateur radio operators, old and new alike. Whether you are into HF, or VHF operation, I trust the information presented will increase your enjoyment of our great hobby.



KB2LJJ Radio Mods Database.

The KB2LJJ radio mods database offers Radio Modification's, circuits and an extensive collection of amateur radio manuals. 



M1GEO George Smart.

This site documents many of my projects in the form of articles.. 



North Texas Microwave Society

Dedicated to Promoting Activity, the State of the Art in Equipment Design, and the Exchange of Ideas and Technology for the Amateur Bands Above 902 MHz. http://www.ntms.org/


W5DXP Cecil

Welcome to Cecil's Amateur Radio Home Page. http://www.w5dxp.com:80/



Government Communication Agencies


Australian Communications and Media Authority

The Australian Communications and Media Authority (ACMA) is responsible for regulating telecommunications, broadcasting, internet and radio communications. http://www.acma.gov.au


Federal Communications Commission

The Federal Communications Commission (FCC) is an independent United States government agency, directly responsible to Congress. http://www.fcc.gov/


OFCOM (Office of Communications)

Ofcom is the independent regulator and competition authority for the UK communications industries, with responsibilities across television, radio, telecommunications and wireless communications services. http://www.ofcom.org.uk/



Manuals, Books and Documents 



CQHam is Russian site that seems to have near every manual for ham equipment. All manuals are available free.




Scribd is a free site dedicated to the sharing documents and information on all topics.



United States Navy Electricity and Electronics Training Course

Reproduced here in full. all 24 modules. They are not scanned, they are produced for cd by the Navy. Quality is perfect. you can use pdf search to find anything on each document. Has questions and answers in each module..




Radio Propagation 


HF Propagation Logger

A Propagation Logger is an interactive Webpage for DX Reports.




Radio propagation resource site operated by NW7US.



IPS (Ionospheric Prediction Service)

IPS acts as the Australian Space Weather Agency, providing the Australian national radio propagation and space weather services. Systems and technologies affected by space weather including HF radio systems.



SDO (Solar Dynamics Observatory)

SDO is designed to help us understand the Sun's influence on Earth and Near-Earth space by studying the solar atmosphere on small scales of space and time and in many wavelengths simultaneously.



Solar Influences Data Analysis Centre - SIDC

The SIDC is a research group for solar physics at the Royal Observatory of Belgium.
Its operational activities include the World Data Centre for the sunspot index and the Regional Warning Center Belgium for space weather forecasting.



Space Weather Predictions

Space Weather Prediction Centre (SWPC).  The centre is one of the nine National Centres for Environmental Prediction (NCEP) within NOAA's National Weather Service of the United States of America.




Radio Users



Have you ever wondered where different modes should be operated, what frequencies to avoid as a courtesy (like SSTV), etc? This site will be the database for the following: 1) known net frequencies, 2) known segments for different modes, 3) known beacons 




Search for International Shortwave Broadcast Stations are on a particular frequency. 



NASWA WWW Shortwave Listeners Guide

The NASWA WWW Shortwave Listeners Guide was originated by John Figliozzi, author of the book The NASWA WWW Shortwave Listeners Guide , last published by Universal Radio in 2001. Since October, 2005, the database has been maintained by Ralph Brandi, NASWA webmaster, with assistance from John and from NASWA Easy Listening columnist Richard Cuff. http://www.naswa.net/swlguide/



A WebSDR is a Software-Defined Radio receiver connected to the internet, allowing many listeners to listen and tune it simultaneously. SDR technology makes it possible that all listeners tune independently, and thus listen to different signals; this is in contrast to the many classical receivers that are already available via the internet.




Resource Sites


DX Zone

Ham Radio Resource Guide thousands of radio related resources. 






CMSK MSK (Minimum Shift Keying)

Narrow-band weak signal mode for LF/MF, MSK (Minimum Shift Keying) is very similar to PSK, but instead of changing the phase to signal the data bits, the frequency is advanced or retarded a very small amount. The narrow-band digital mode, CMSK is designed specifically for the LF and MF ham radio bands (2200, 600 and 160m). http://www.qsl.net/zl1bpu/CMSK/cmsk.htm



DigiPan stands for "Digital Panoramic Tuning" and brings the ease and simplicity of PANORAMIC reception and transmission to PSK31and PSK63 operation. http://www.digipan.net/


DRMDV - HF Digital Radio Mondiale

DRMDV is a digital voice mode on HF - it caters to high quality digital voice under poor band conditions. 



FDMDV - Frequency Division Multiplex Digital Voice

FDMDV is the latest digital voice mode on HF - it caters to high quality digital voice under poor band conditions, in only 1100Hz bandwidth!. http://n1su.com/fdmdv/



A digital mode program for PSK31, RTTY, CW, OLIVIA and many other operating modes. Available as free & open source software, coded in C++ for Linux.



FREEDV - Digital Voice for HF

FreeDV is a GUI application for Windows and Linux that allows any SSB radio to be used for low bit rate digital voice. http://freedv.org/tiki-index.php


I2PHD - Software Defined Radio

Here you can find various software, developed for radio amateur's use including Software Defined Radio, all freeware. http://www.weaksignals.com/


MM Hamsoft

High quality ham radio software available free from MM Hamsoft include:

  • MMANA-GAL is an antenna-analysing tool based on the moment method, which was introduced in MININEC

  • MMSSTV is a SSTV (Slow Scan TeleVison) application based on computer soundcard interface technique.

  • MMTTY is Radio Teletype application based on computer soundcard interface technique.

  • MMVARI is a multi-mode soundcard program for receiving and transmitting the RTTY-PSK-FSK-MFSK modes.




Orbitron is a satellite tracking system for radio amateur and observing purposes.



Radio Mobile

This software is a tool used to predict the performance of a radio system. It uses digital terrain elevation data for automatic extraction of path profile between an emitter and a receiver. http://www.cplus.org/rmw/english1.html


Radio-SkyPipe II - An Internet Enabled Strip Chart Recorder

This versatile program will allow you to strip chart your observations and share them in real-time with others over the internet.  http://www.radiosky.com/skypipeishere.html


Spectran Version 2

Spectran is a program to do real time or deferred spectral analysis / waterfall display, in addition to real time audio filteringhttp://digilander.libero.it/i2phd/spectran.html



VOAProp provides view of HF propagation conditions should be like on a particular day on a particular band and customized to suit individual location. http://www.g4ilo.com/voaprop_hlp.html



WSJT is a computer program for VHF/UHF communication using state of the art digital techniques.  It can decode fraction-of-a-second signals reflected from ionized meteor trails, as well as steady signals more than 10 dB weaker than those required for conventional CW. http://physics.princeton.edu/pulsar/K1JT/






Let's talk about electronics. Including JavaScript tools to design and simulate crystal ladder filters. http://www.giangrandi.ch/index.shtml


IRLP (The Internet Radio Linking Project)

The official site of IRLP the Internet Radio Linking Project



VHF/UHF Long Yagi Workshop

VHF/UHF Long Yagi designs including software. 




The World We live In


Central Intelligence Agency - World Book of Facts

The United States Central Intelligence Agency's World book of facts details statistical information about all the World's nations.



The History of Telecommunication

A timeline of technology and communication.


Comments can be sent to Kathy Miller katherine@yosemitepark.net




Page last revised 15 October, 2016


Web design by Peter Miles

All content may be used for unlimited distribution with credits.

This site has been designed to cater for 800 x 600 resolution.
Site is best viewed with Internet Explorer 5.5 or Netscape 6 or higher.