propagation conditions

P3A - Russian contest team - On this page you will find information about previous, current and future operations of our contest team, different articles, links and info about contesting, DXing, contests calendar, propagation, antennas, equipment, awards, and much more.

K7HJ Beacon - K7HJ provides a 6 meter beacon at 50.058 mhz for Amateur Radio Operators to check band conditions. The Beacon operates 24 hours a day from Las Vegas Nevada

N1KXR/B Ten-Meter Propagation Beacon - The N1KXR/B went on the air at 21:00 Hours EST on Saturday, November 22, 2008. This beacon is coordinated with the IARU Region 2 HF Beacon Coordinator and is located in Deerfield, Massachusetts USA

DXFun Web Cluster - DX Cluster mainly in spanish, with chat, filtering available upon user registration, propagation reports and solar status, includes also latest dx news.

DX Italia Propagation forecast - Propagation forecast for current month edited by I2MQP in italian

KE1FO Webcam - Live webcam on antenna tower and weather conditions

FDMDV - Digital Voice - FDMDV - Frequency Division Multiplex Digital Voice Digital Audio over HF SSB. FDMDV is the latest digital voice mode on HF - it caters to high quality digital voice under poor band conditions, in only 1100Hz bandwidth

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.

Guide to Solar Activity - Paul Harden NA5N has produced a superb guide to solar activity and HF propagation for the QRPer

WB3ANQ Web Site - Operational mode QRPp QRSS Running as an MEPT Manned Experimental Propagation Transmitter

Sporadic-E propagation at VHF - This review of progress and future Prospects provides a practical guide for effective use of VHF sporadic-E propagation. By Emil Pocock, W3EP.

D-Region Absorption Prediction - This map represent the current position of the sun and how a solar flare influence an HF fade. Estimated recovery time is also represented. Includes son java and javascript animations of last two hour conditions

NOAA Space Weather Scales - The NOAA Space Weather Scales were introduced as a way to communicate to the general public the current and future space weather conditions and their possible effects on people and systems. The scales describe the environmental disturbances for three event types: geomagnetic storms, solar radiation storms, and radio blackouts.

VHF/UHF Propagation - In the past few years there has been a growing movement from VHF frequencies (50-300 MHz) to UHF (300-900 MHz). Many, however, have found the move fraught with difficulties.

IPS - HF Systems MUF maps and prediction charts - These pages provide general propagation advice for HF communicators. Information available includes inferred global propagation conditions, real time HF fadeout coverage charts, regional ionospheric vertical MUF maps and Hourly Area Prediction charts for Astralia and Asia, Europe and North America

Radio Sport Canada Zone to Zone propagation - ZoneProp produces a 40 zone by 40 zone matrix that is updated hourly at approximately 20 minutes past the hour. The intersection between a row and column gives the band on which a constestant in the zone represented by the row is mostly likely able to contact an contestant in the zone represented by the column.

Is HF propagation reciprocal - Some test circuits using the ACE-HF System Simulation & Visualization software, about reciprocal propagation on HF bands by NW7US

Radio Signal Propagation - Concise guides to radio signal propagation including topics such as the ionosphere, troposhere, ionospheric refraction, E layer, D, layer etc.

HamInfoBar - Ham Radio & SWL Toolbar Priority listing - Free toolbar for radio hams & SWLs: Search QRZ.com, HamCall, FindU.com, Google, Wikipedia, eBay and other useful engines. Check the latest DX spots. Get links to QSL, satellite, forums, propagation, broadcast radio, maps etc. RSS feeds including Amsat & the latest eBay ham specials. Listen to ARRL, RSGB and WIA news & other radio stations. Plus lots of other features!

TubeCalc - Input (grid or cathode) and output (plate) tube resistances calculation according to its electrical characteristics, frequency, mechanical dimensions and working conditions.

Proplab-Pro - An ionospheric laboratory for your personal computer. Wquipped with one of the most powerful ray-tracing engines capable of handling such things as Ionospheric Tilts Chordal Hops Non-Great-Circle Propagation Spitzes and more

Propagation Wizard - Freeware windows application that help in determine the availability of a shortwave link, by Rohde & Schwarz

SEP Win - VHF Propagation Analysis Software for the Radio Amateur by K9SE

PalmProp - PalmProp is a software for PalmOs dedicated to the forcast of HF radiowave propagation by f5hla

SPLAT! for Windows - This free software is useful for visualizing terrain and performing Longley-Rice path loss and coverage prediction using the Irregular Terrain Model. A Windows port of the Linux-based SPLAT by John Magliacane.