[GreenKeys] HF Hourly Area Propagation Prediction Plot

[Duncan M. Brown]

>
> The site described below is an excellent tool for predicting which
frequency is likely to be best at a given time of >day:
>   http://www.ips.gov.au/HF_Systems/4/1/1  Then select the city of
interest. 
>
>  The HAP chart is a guide to frequency selection for HF communications
between mobiles and a specified base >station. The recommended frequency
for communications with the base at a given hour is read off from the point
>in the map corresponding to the mobile's location.The predictions are made
from real time data which are 
>updated each hour. 
>
>

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 Lots of other interesting charts & tools on this site.

   have fun & 73

  --Duncan, K2OEQ