propagation map

The Optimum 6 Element Yagi-Antenna - A 70cm and 2m 6 elements yagi antenna plan based on the IEEE Transactions on Antennas and Propagation

LogView - LogView is a FREE post-contest log-visualisation tool, for analysing contest performance. It plots the QSOs in a Cabrillo-format contest-log on to one of 8 different maps by finding the position of each QSO from an online database of about 970,000 W/VE callsigns.

Map of US 10 m beacons - Map of US states beacons oprating in 10 meters band

VHFDX.EU Cluster - VHFDX.EU - DXCluster backbone of MMMonVHF Web DXCluster, DXCluster Map, DXCluster Mobile, ON4KST chat Review, N0UK chat review, Daily ES spots

Megawave - MegaWave Corporation's goal is to provide services and products of the highest quality to its many customers in the areas of antenna design and development, and radiowave propagation.

NS6T's Azimuthal Map  ^updated - This site provides free azimuthal maps for almost anywhere on the globe. Create your own azimuthal map for your location. You can customize the map in a variety of ways by changing the options in the web form

ITU Map - Official ITU-R zone map at ITU Broadcasting services division

CQ Zones WW Map - Large - A large CQ Zones WW Map, in a 3111x2251 Pixel format suitable for printing pourposes

Ham Radio Grid Square Locator Map - Amateur Radio Ham Radio Maidenhead Grid Square Locator Map, by Address, Call sign or Grid Square, using google maps

California Maps - APRS Central California maps. Here are the APRS maps you should have.

ARRL Grid Locator Map for N.America  ^updated - North America Grid Locator map by ARRL

VHF Propagation Maps - Experimental maps that show real-time VHF propagation derived from analyzing data gathered from the APRS-IS network.

Analyzing UHF signals using FFT programs - With spectrum analysis of beacon signals, it's possible to see features relating to various propagation phenomonen.

Arizona Repeaters Directory - Arizona repeaters sorted by counties, with location maps! Also includes Robet's List of verified Arizona scanner frequencies.

RF Skywave Propagation - Excellent presentation on RF skywave propagation by Greg, N6LYU

An introduction to HF Propagation - This article will help to unravel some of the mysteries as well as giving useful operating tips to maximize your chances of working that rare station by G4UCJ

WM5R Long Delayed Echoes - WM5R presentation of Introduction to Long-delaye echoes and theories among this propagation effect.

VOACAP Online - Online professional-grade high-frequency (3-30 MHz) propagation predictions

Propagation and the Atmosphere - overview of radio signals and radiowave propagation and how different areas of the atmosphere affect radio communications.

Sporatic-E on 10 meters band - Understanding 10 Meter sporatic-e propagation by James R. Duffey

TAHO.EXE a source for UI-View maps - A cool add-on to UI-View, that enables to use the free datas of OpenStreetmap to generate APRS maps for UI-View in a few mouse clicks.

VOACAP for Linux - Port of the popular VOACAP program, HF propagation prediction tool. It may be compiled using the GCC GFortran compiler

GcmWin for Linux - Great Circle Map for Linux, available for Debian, freeware by SM3GSJ

Fatpigdog's Real Time FFT Audio Spectrum Analyzer - Fatpigdog's Real Time FFT Audio Spectrum Analyzer. User interface has the look and Feel of an HP Spectrum Analyzer. But, in addition to the regular Spectrum Plot, it also produces detailed Waterfall plots. The user can optimize the color map, chosing from a wide assortment of color themes. This analyzer supports multiple traces, trace arithmetic and normalization.

HERALD P2P radio link design - Sw tool to design point-to-point multi-hop microwave links and networks, 400MHz to 58 GHz. Site/Hop Configuration; Customized Antenna & Radio Equipment Libraries; Link Budget; Path Profile Analysis ,clearance, reflections; import path profiles from SRTM maps, free download.