Low angles

A little more analysis of the 28/29 August night-time outing to the beach (14MHz) brings us to 8P9DH, and an interesting demonstration of low angle radiation.

Why did I choose 8P9DH, first of all?  It's because I visit this particular beach at IO73rf to listen for long path signals from the south west direction, and this path is also a clear, short path shot across the sea horizon to 8P.  Most of the US stations coming in take a glancing and brief path over some local land to the NNW, so another location is needed for the best enhancements to be seen for those.

Here are the results, showing the absolutely critical importance of very low angle signals, which are clearly lost entirely to the other stations as the night progresses.  With a longer listening period (already planned), I suspect 8P9DH would continue to be heard at good signal strength throughout the night time period from the beach:

14MHz WSPR (5W) from 8p9DH received by COAST/RX, IO73rf (beach)

 

 

Proppy prediction (SNR) for 01UT from 8P9DH.