propagation map

N2NXZ Beacon - 10 Meter Propagation Beacon. Amateur Radio and Wind turbine info

North American Beacons Map - North american 50 Mhz beacon map by K9MU

VHF QRZ Database - Maintanined by DL8EBW offer searchable map of registered VHF operators

RadioCQ.com DX WebCluster - RadioCQ DX WebCluster mainly in spanish offer a graphical web cluster with flags, band selector, locator using google maps, chat and forum.

6 Meter DX Map - 6 Meter DX Map with reports from the VE7CC DX Cluster

Online QTH locator or map square - Find either your or your correspondent's Maidenhead grid square or location using Google Maps

UIVIEW Maps - Download uiview maps by G3OJZ mostly for APRS UK region

WAS Map by ARRL - WAS Map, worked all States by ARRL

Digital Modes Frequencies - Digital Communications Modes and Frequencies

Propagation Planning for DXpeditions - 6 Steps for a More Successful Trip by Carl Luetzelschwab K9LA

Using MT65 - MAP65, a panoramic, polarization-matching receiver for JT65 by K1JT

WSPRnet Weak Signal Propagation Reporter Network - A group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power transmissions. Computer sent/received Morse signals received by amateurs and collected on an online database.

Radiowave Propagation Center - High frequecy and VHF radio propagation data, solar and geomagnetic real-time and historic data, sunspot activity reports, as well as forecasts. A comprehensive propagation resource compiled by Tomas Hood, editor of the propagation columns of CQ, CQ VHF, Popular Communications, and Monitoring Times magazines.

Here Comes the Sun - Propagation and Sun - Solar activity can aid or hamper HF propagation beyond line-of-sight range, WA1SVF and N6BV answers to questions about Sun influence on radio signals propagation

Sporadic E propagation - About Sporadic E propagation at wikipedia

Sporadic E Spots - Sporadic-E clouds location and estimated MUF real time map

Maple Leaf - Located in southern Ontario Canada, supplier for HF VHF antenna kits, aluminium tubing, portable j-pole antennas, lightning suppressors, connectors and adapters

Beacon Assistant - Simple little program that just points to the spot on a world map where a radio beacon is transmitting.

Radio Works - RadioWORKS is a tool for calculating various items related to radio waves and radio wave propagation. Get detailed information about a frequency, such as the free-space wavelength, band classification, propagation methods, common transmitter configurations, etc. Calculate antenna lengths or frequencies. View a 3D coverage map by providing a latitude / longitude coordinate and transmitter height.

WSJT - WSJT facilitates basic digital communication using protocols like FSK441, JT6M, JT65,JT2, JT4, WSPR explicitly optimized for a number of different propagation modes by K1JT

W3DHJ - lunix utilities for Radio Amateurs - A small collection of bash scripts for pulling QTH info, grid square info, propagation charts, and monitoring prop logger postings.

Ham Fax - HamFax is an application for sending and receiving facsimiles in amateur radio and for receiving public facsimile broadcasts like weather maps. Supported interfaces are sound cards and the SCS-PTCII from Special Communication Systems.

WSPR - WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Stations with internet access can automatically upload their reception reports to a central db

VOAProp - VOAProp shows you typical propagation for a given hour of the day during a given month. The propagation is shown as expected signal strengths to be received from different parts of the world, plotted on a world map. Windows freeware by G4ILO

MAP65 - MAP65 works together with the Linrad software. The Linrad/MAP65 combination implements a wideband, polarization-matching receiver for the JT65B protocol.