Share |

Black Cat Systems
Follow our tweets to instantly hear about new releases!

Home
Purchase
Support Forum
Get Our CD-ROM
News
Mac OS X Software
Mac OS 9 Software
Windows Software
Ham Radio iPhone/iPad
Linux Software
Documentation
Support/FAQ
Update Policy
Lost Reg Code?

Radiation Detectors
USB Icom CI-V Interface
MIL-STD-188 Interface

General Interest Programs

  Atomic Mac/PC
  Audiocorder
  Audio Toolbox
  Black Cat Timer
  Diet Sleuth
  iUnit
  Graffikon
  Graph Paper Maker
  Health Tracker
  Knitting Wizard
  Label Wizard
  Prog Audio Gen
  Sound Byte

Amateur Radio Programs
  Audiocorder
  Black Cat CW Keyer
  DX Toolbox
  Elmer
  iDXCluster
  MatchMaker
  MININEC Pro
  Morse Mania
  MultiMode
  RF Toolbox

iPhone/iPad Apps
  Atoms To Go
  dB Calc
  Drill Calc
  DX Toolbox
  Elmer Extra
  Elmer General
  Elmer Tech
  Field Strength Calc
  Function Generator Pad
  HF Weather Fax
  iAttenuate
  iFunctionGenerator
  iGeiger
  iSoundex
  iSoundByte
  iSweep
  iUnit
  Morse Mania
  ACARS Pad
  Morse Pad
  NAVTEX Pad
  Packet Pad
  PSK31 Pad
  SSTV Pad
  Photon Calc
  Rad Map Tracker
  RF Link Calc
  Sound Byte
  Sound Byte Control
  Spectrum Pad
  SWBC Schedules
  Transmission Line Calc
  Weather Calc
  Wire Calc

Android Apps
  ACARS
  SWBC Schedules

About Black Cat Systems
Geiger Counter
Site Map
Our software for Mac OSX
Privacy Policy
Press/Media
HFunderground
Apple /// Emulator

Macintosh Links
Shortwave Radio
Pirate Radio
Spy Numbers Stations
Science and Electronics
Ham Radio Software
Geiger Counters


   

DX Toolbox gives you real time information on current HF radio conditions, alerts you to flares and geomagnetic storms, and helps you determine the best bands for any path under various conditions.

Looking for a way to connect your computer to your Icom rig? Take a look at the Black Cat Systems USB Icom CI-V Interface

HF Shortwave Radio Propagation Information

Shortwave Radio Propagation Basics

These pages are the start of a tutorial on how shortwave radio propagation works. They help to explain what the various numbers and readings that DX Toolbox reports mean, and how to interpret them, and gain a better understanding of the factors that affect shortwave radio propagation.


Email your comments and questions to info@blackcatsystems.com

Last modified July 27, 2004