Encoding many channels on the same frequency through radio vorticity

3t3 3t3 at comcast.net
Mon Mar 5 09:48:04 CST 2012

Mike -

I think you are right.  Multi-path (Fresnel  or ionospheric skip) would 
surely mess things up when it comes to relying on predictable orbital 
angular momentum of the EMF.  The demo shown in the original YOU TUBE 
video of what they did over in Italy was line of sight at 2+ Ghz and 
only about a mile delta between Tx and Rx antennas - i.e. there was no 
multi-path taking place in the video demo.  The practical application 
might be limited to fiber optic environments or it might work in a 
line-of-sight microwave tower to tower environment but, I doubt it will 
be of much good on 40m HF SSB. :-)

     Terry McCarty
    3t3 at comcast.net

Mike O'Dell wrote:

>i don't see how it could survive multipath
>  -mo

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