propagation map

VHF UHF European Beacons - MMMonVHF maintains the data for 6m, 2m, 70cm and 23cm bands in collaboration to LA0BY. This site allow display of a beacon map and latest beacon spots.

NGDRT 10 Meter Beacon - NGDRT now sponsors the K4AIS beacon at 28270.5 KHz. Feel free to use this beacon anytime you want to see the propagation into North Georgia.

K5DZE Becon - The K5DZE/B 10 Meter Beacon currently operates on 28.228 MHz 24/7 transmitting a CW signal at 18 WPM as an aid to check 28 MHz propagation Northern Kentucky

W0ERE Beacon - To provide a continuous signal on the ten meter amateur radio band for propagation-related monitoring

10 Meter Synchronized Propagation Beacon Project - Project started by several 10 meter beacon operators in an ad-hoc fashion to experiment with operating 10 meter beacons similar in concept to the IARU beacon project

LU9DA DX Cluster maps - Display maps of current dx spots per each band

Ham Radio Chat NZ3M - A little meeting place with real time chat for ham radio ops. Includes dx spotting, propagation monitoring and more. Chat while working DX!

Convert addresses to Latitude and Longitude - This online tool will convert any street address into latitude and longitude and vice-versa by executing queries to several online mapping services like googlemap geocoder maporama terraserver and more by Stephen P. Morse

WorkedGrids - WorkedGrids is a Windows application that displays a map showing the amateur radio grid squares contacted and logged in using a third-party logging program. WorkedGrids uses colors to display information on a per-band basis. Up to four bands can be displayed concurrently by VE2ZAZ Bert

ARRL US Call district map - Map of USA call districts by ARRL and edited by AA70A

QTH locator or Map square with Google Maps - Based on Google Maps displays corresponding QTH grid square or helps to find one by pointing on the map.

Demis Web Map Server - A good online map service useful for ACARS map generation

Operating NVIS - Near Vertical Incidence Sky Wave (NVIS) Propagation, PPT presentation by Marc C. Tarplee, Ph.D. N4UFP

Google Maps APRS Priority listing - APRS web map with weather, telemetry, messaging and a bulletin board. Google Maps and Google Earth views update automatically in real time. 14 languages.

W1TAG WD2XES WE2XGR/3 - Experimental Stations Run by W1TAG WD2XES has been used to study LF antenna design, propagation and communication modes. Signals from WD2XES have been copied as far away as Russia.

Operating Meteorscatter - Meteorscatter (MS) describes a propagation mode whereby the signal is reflected from rather small ionised patches in the E-region of the ionosphere.

D-Star Repeaters - Worldwide jFindU d-star repeaters map

OHIO 2 meter repeater map - prepared by KB8SSH since 2002

An Introduction to 24 GHz - Article provides a guide on how to use 24 GHz band and what to expect, including Active modes, equipment, propagation and antennas for this band in by VE3SMA

Understanding Amateur Radio NVIS - Understanding Amateur Radio NVIS Antennas and Propagation, derived from The ARRL Antenna Book and QST Articles

What is NVIS - differences from groundwave propagation

NVIS Propagation maps - Maps and propagation indices

NVIS Propagation - Kingston Amateur Radio Club Articles Dave Lawrence, VA3ORP

USAPhotoMaps - Free Windows APRS Client with capability of downloading free aerial photo and topo map data.

D-RATS  ^updated - D-RATS is a small application designed to provide data communication capabilities with D-STAR radios. It supports text chatting, file transfers, position reporting and mapping, and much more! It is written in Python using GTK to run on multiple platforms.