hf propagation

Ukrainian HF portal - Ukrainian radioamateur on HF: DX News, Contesting, Propagation, Conference, Photo, Radioamateur Map, Online Logs etc.

hfradio.org Amateur Radio Resource Center - A comprehensive resource center with DX aids, live propagation, callsign searches, news and bulletins, maps, and more by NW7US

VK2FLR DX Sounds Archive - Real Audio files containing interesting examples of VHF DX propagation from Sydney, Australia

HF Propagational Resources - Create Online Maps, Check Forcasts and Conditions, more features being added each month, by hfradio.org

ITU CIRAF zones maps - Online CIRAD zone maps by ITU

EME resources by DL4EBY - Several kinds of operational data needed for Amateur Radio moonbounce (EME, earth moon earth) communications, the technical challenge amongst the various propagation modes on VHF, UHF and microwaves

G0ISW VHF/UHF DX Homepage - VHF/UHF DX site showing latest propagation, software, radio dealers, awards, maps etc.

Todd Emslie's TV FM DX page - Australian page featuring 45-108 MHz VHF DX via Es, multi-hop sporadic E, TEP, and F2 propagation.

WA1OUB 50 MHz Es/E/F2 propagation - This page represents 50 MHz Es/E/F2 propagation analysis with Europe and N. Africa to WA1OUB.

Australian Space Forecast Centre - Current HF Radio Propagation and Space Weather Report

Introduction to HF propagation - An Introduction to High Frequency Radio Propagation by IPS Radio & Space Service

High Frequency Propagation Models - Institute for Telecommunication Sciences High Frequency Propagation Models

Long Path Propagation - Long path hf radio propagation is sometimes the best path to work dx, since the shortest path is not always the best path.

VHF UHF Microwave Radio Propagation - Notes on radio propagation in that part of the spectrum (upper VHF to microwave) used by experimenters for high-speed digital transmission

HF Propagation Primer - Flash Movie describing HF (shortwave) radio propagation to beginners. Very helpful aid in understanding.

Introduction to VHF Propagation - Understanding basic VHF and UHF propagation, eskip, Backscatter, Meteor Scatter and more

HF Radio Propagation Theory - Ionospheric HF Radio Propagation Theory in a Nutshell by Rick Johnson, AE3C

Propagation eAlert Service - Automatic e-mail alert of propagation information. Gives current solar flux, Ap, Kp, solar wind information, solar and geomagnetic conditions past and forecast, sunspots, aurora index, and more.

Sporadic-E - Short notes about sporadic E influence on VHF propagation

Todd Emslie's TV FM DX page - Australian page featuring 45-108 MHz VHF DX via Es, F2, and TEP propagation.

4NEC2 antenna modeler  ^pop - 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. Can be interfaced to HFwin32 propagation prediction software.

ACE-HF Propagation Prediction Software - Professional PC software for hams that uses VOACAP and includes area coverage maps animated by time or frequency

HF Propagation Models from NTIA ITS - Windows-95/98/NT 32-bit HF Propagation Models from NTIA/ITS

K9SE E-Layer Propagation Assessment - SE-PROP, Field-Aligned Scatter Assessment, Sporadic-E Propagation Assessment for the VHF Operator

ERGO Radio Software - Creative Express Corporation software to enhance shortwave radio listening. Support for Drake R8A/B, NRD535/D, WJ HF-1000 and TEN-TEC RX-320 receivers, as well as propagation, path evaluation and database management.