Topband: Large TSTM areas as MF "wall"

Tom Rauch
Tue, 29 Oct 2002 11:19:21 -0500

> Refraction of 160M signals by cold fronts? That's the first I've heard
> of this. Where might we head to read some studies about this? Any
> experimental data available?

All of the data I have seen shows the effect rapidly dimiminishes as 
the frequency moves below upper VHF and is immeasurable at HF and 

The only noticeable effect of weather is in noise (from static 
discharges) and to a smaller extent conductivity of upper layers of 
soil (from moisture changes).73, Tom W8JI