[CQ-Contest] 10 meters Propagation in June

Bill Parry bparry at rgv.rr.com
Fri Jun 13 15:22:01 EDT 2008


I have experienced this. I thought it was called scatter or bent propagation
or something. It has been a while since I heard this and I can't remember
the time of day. Seems like it is in the late afternoon.  Is that right?

Bill W5VX

-----Original Message-----
From: cq-contest-bounces at contesting.com
[mailto:cq-contest-bounces at contesting.com] On Behalf Of John Warren
Sent: Friday, June 13, 2008 12:05 PM
To: Contest
Subject: Re: [CQ-Contest] 10 meters Propagation in June

There's another interesting 10M propagation mode which happens most  
summers, and doesn't seem to depend much on the state of the sunspot  
cycle. That's "side-scatter" between N America and Europe.

I'm not a physicist or propagation guru, but I'm told it occurs  
because the sun moves through a vertical position over the mid- 
Atlantic Ocean, and causes extreme ionization there. Signals between  
Europe and N America can be bounced off that intense ionization at  
more or less  a right angle. Not strong, but good readable R5 S3  
signals, typically around 2030-2230Z. Both sides of the QSO should be  
beaming to eastern South America - any Europeans on the band probably  
will be, and North Americans with Yagis can usually get their attention.

I know I've worked several Italians who understand that mode (for  
example Lauro IK4GRO), and I seem to recall working other Europeans  
too.  Just make sure they don't turn their beams to North America -  
they'll vanish, hi!

Anyone have more experience with this?

73,  John,  NT5C.
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