call sign map

VHF-UHF Portable Yagi-Uda - VHF-UHF portable Yagi-Uda antenna design and construction notes by XE1MEX

N1MM Free Contest Logger - N1MM is a Free contest logging program for Windows. Bandmaps for each vfo, check function, cw sending, highly integrated radio support. Novel packet spot mapping features.

Official Polish Callbook - searchable database of Polish radioamateurs

S59ABC S52000 Radio club Maribor - Home page of radio club Maribor Slovenia:S59ABC,S52000 milenum callsing.

What does DX mean - DX is an old radio term used by radio enthusiasts, it stands for the long-distance reception of radio signals, DX being a short-form way of saying distance-extreme.

Digital signal processing - Frequently asked questions on Digital Signal Processing

ISS Crew - ISS crewmember name and callsigns by Expedition nr

The KM5ES 2 Meter SSB Homepage - All about 2 meter SSB weak signal operation's,HSCW,SWOT

VA3CRA's QRP Page - This page is dedicated to sparking interest in QRP operation with topics such as projects, antenna designs, equipment, awards, and software.

Repeaters in Finland - Finnish repeater maps and links by SARL

Map of solar zenith angles - Global map of Solar Zenith Angles, or angles indicating the elevation of the sun above the horizon

Yagi-Uda - Design and optimize Yagi antennas. Ol GW Basic program for dos.

DXView  ^{updated  pop} - A free application that displays location information determined from a callsign, displays translations of common "QSO words and phrases" in the languages used in the callsign's DXCC entity, displays beam headings and SpotCollector DX Spots on a world map, displays country maps, and provides point-and-click control of antenna rotators from AlfaSpid, ARSWIN, Heath, Hygain, M2, Prosistel, SARTek, TIC, Trackbox, and Yaesu

MobileLog Amateur Radio Mobile Logging - The MobileLog program is a specialty logging program designed for mobile amateur radio operators. It has been designed to allow quick entry of important information regarding QSOs. The software is primarily concerned with the logging of U.S. county information, which may be used to help work toward awards such as the USA-CA award for working all counties in the U.S.A. The data from this program may be imported into your general logging software. This sofware exports data in the ADIF (Amateur Data Interchange Format) and CSV (comma-seprated variable)

Finite difference program - This software is able to calculate the properties of odd shaped transmission lines. Particularly good in valve amplifier design, for aiding the design of transmission line resonators.

Psion ham software - Amateur radio programs to download, locator , log, etc... for Psion Aprs maps for PC (ui-view)

ARMAP - Amateur Radio Maps and Logbook, commercial

X-APRS - APRS™ for Linux is a multifaceted system for use with packet radio by Hams, it allows the monitoring of real time geographical information such as the position of vehicles, the status of weather, radio direction finding and much much more. It envolves mapping, GPS tracking, packet radio, etc

Bonito RadioCom - Decode digital and analog signals out of any high quality Transceiver or Receiver, works as a DSP-analyzing system

Commander  ^{updated  pop} - A free application that controls up to 4 Alinco, Elecraft, FlexRadio, Icom, JST, Kachina, Kenwood, TenTec, or Yaesu transceivers, switching between them manually or automatically based on frequency, and displaying frequency-dependent settings for devices like tuners and amplifiers; includes a bandspread, and supports transverters, frequency and mode tracking by an independent transceiver or receiver, SDR-based panadaptors, and SO2R switching with microHam or OTRSP-compliant devices.

Radio Clock - Enables you to decode the time signals sent by various LF and HF radio stations in the standard frequency and time service

Vox Actuated Recorder for Windows - Vox Recorder is a Windows utility wich allows recording sound from an audio source only when an audio signal is present; its main purpose is to avoid the recording of the silence eventually present at the input.

WB0NNI Home Brew HF Amps and Tutorials  ^pop Priority listing - Tutorials and other information on designing and building hf amplifiers. Includes tube data and amplifier projects.

A 50 MHz MicroWattMeter - A design for a simple microwattmeter. Input range -75 dBm to + 5 dBm. Frequency range 2 to 50 MHz

DSP-10 2-meter DSP transceiver - The DSP-10 is an amateur-radio, software-defined 2-meter transceiver that can be built at home. It operates not only on SSB, FM and CW, but also on four Weak-Signal modes. Features are tailored to operation on VHF, UHF and Microwave frequencies. By W7PUA