VOACAP Online HFBC



TX to RX:  km,  mi,  °
Date
Year:  Month:
SSN:  

Note: VOACAP Online knows about the correct SSN values. Therefore DO NOT set any value to SSN, unless you want to experiment.

After you have entered a value in any of the fields, press the TAB key instead of ENTER.
Transmitter Site
QTH:
Name:
Latitude:[-90..90]
Longitude:[-180..180]
TX antenna:
TX power:
Specials:
Receiver Site
Name:
Latitude:[-90..90]
Longitude:[-180..180]
RX antenna:
Quality:
Current point:
Online Help

Instructions:

  • If in doubt, read some background info.
  • Transmitter Site (TX) = Broadcast Station (red), and Receiver Site (RX) = You (blue). Drag the markers on the map to the desired locations. Double-click the markers to swap TX and 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.
  • Choose the year & month, TX and RX antennas, TX power, and Reception Quality.

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!

© 2010-17 Jari Perkiömäki (OH6BG), James Watson (HZ1JW) and Juho Juopperi (OH8GLV). Questions or suggestions? Write to our Helpdesk.