Topband: Topband Propagation

[Robert Brown]

On Fri, 7 Jan 2005, Ford Peterson wrote:

> If this data was superimposed over propagation path statistics, 
could this provide an indicator of what is going on?  It seems
to me, if refraction is occurring along certain paths, (read:
skewing, spotlighting, peaks, nulls) then the atmospheric data
 at altitude would support the thesis.  Does this sound correct?

I don't envisage superimpopsing this large data set but rather 
looking at path failures to see which variable(s) give rise to
ionospheric tilts and disrupt paths by skewing.  This is the
opposite to the use of the control point method on HF.

I would hope that Nick, VE7DXR, can respond to this.  He has the
MF data set and only needs radiosonde data to look for anomalous 
conditions that adversely affect propagation.  Going from data
taken at 30 km to suggesting its application around 100 km is a
"stretch" but it would be a start where we have nothing now!

73,

Bob, NM7M