VOACAP Online

Professional-grade high-frequency (3-30 MHz) point-to-point propagation predictions

TX to RX:  km,  mi,  °
Date
Year: Month:  SSN:
Transmitter Site
QTH:
Name:
Latitude:[-90..90]
Longitude:[-180..180]
TX antenna:
TX power:
TX mode:
Specials:
Current point:
Receiver Site
QTH:
Name:
Latitude:[-90..90]
Longitude:[-180..180]
RX antenna:
Online Help

NEW! VOACAP Oнлайн: Прогноза прохождения для частот 3-30 МГц

Instructions:

  • NOTE! This VOACAP service knows the correct SSN values! Therefore: DO NOT set any value to SSN, unless you want to experiment.
  • In a typical case, Transmitter Site (TX) = Your Station and Receiver Site (RX) = DX Station.
  • Drag the markers on the map to the desired locations. The red marker is TX, and the blue marker is RX.
  • The red line between the markers shows the great-cirle path (short-path). You can also choose long-path.
  • Zoom the map in/out with the mouse wheel and fine-tune the markers by dragging them to their exact positions.
  • Then choose the year & month, TX and RX antennas and TX power. Click on the "Run prediction" button.

More on VOACAP HF propagation predictions

Acknowledgements

This service would not have been possible without the support of two special people: Mr George Lane and Mr Greg Hand. Thank you!

© 2010-13 Jari Perkiömäki (OH6BG), James Watson (HZ1JW) and Juho Juopperi (OH8GLV). Questions or suggestions? Write to our Helpdesk.