

High Frequency Propagation Models
The Department of Commerce has made this HF propagation software available free of charge, as is from these web pages
post 02 Jun 2024

Propagation prediction Links →
SpotCollector
Spots of the same station on the same frequency and mode
VOAProp
VOAProp shows you typical propagation for a given hour of the day
W6elprop predicts ionospheric
W6elprop predicts ionospheric sky-wave propagation between any two locations on the earth on frequencies between 3 and 30 mhz
WSPR
WSPR implements a protocol designed for probing potential propagation
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Spots of the same station on the same frequency and mode
VOAProp shows you typical propagation for a given hour of the day
W6elprop predicts ionospheric sky-wave propagation between any two locations on the earth on frequencies between 3 and 30 mhz
WSPR implements a protocol designed for probing potential propagation

PSION Greyline Clock PSION Greyline Clock v. 1.0 is a UTC/Local clock showing sunlight/darkness area on the world map