Donations Appreciated | |
---|---|
$27 USD | |
$17 USD | |
$7 USD | |
Support continuing development: | |
$47 USD | |
Funding Level
poor
adequate
secure
| |
Your donation defrays the cost of hosting this service on Google Cloud Platform. Financial resources ensure a high level CPU and bandwidth performance needed to provide this applications world-wide and supports ongoing innovation. |
This map shows real-time radio propagation from stations operating on 11 bands between 1.8 and 54 MHz in the amateur radio service. The display shows worldwide activity from the last 15 minutes and is automatically updated about every minute. JavaScript must be enabled to use see the real-time graphics.
Maximum usable frequence (MUF) is the highest frequency that supports communication between two points. On this map, MUF can be considered the maximum used frequency, since the display is based on real-time data.
Data for the map is gathered from several online sources: WSPRnet, Reverse Beacon Network (CW, FT4, FT8), and DX Cluster. Some of these sources provide signal-to-noise ratio (SNR) information.
SNR can be used to determine if a particular path supports certain modes like morse code (CW) or single sideband (SSB).
The map indicates SNR levels with three different per-band shades: SSB (SNR > 10), CW (SNR > -1), or digital modes (which can decode down to an SNR of about -28).
A VHF Propagation Map shows real-time propagation on the 2 meter band.view: |
MUF | 1.8 | 3.5 | 5.3 | 7 | 10 | 14 | 18 | 21 | 24 | 28 | 50 | all |