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AR15.COM
7/13/2014 6:16:27 PM EDT
All new to this and was getting lots of noise today then on 20m I found a conversation where there were 4 others. One was 75 miles away and 2 of them about 300 miles away and the 4th about 400 miles away all in a straight line from here in MS.
7/13/2014 7:01:07 PM EDT
[#1]
Not ground wave. NVIS. Signal goes straight up an then back down
7/13/2014 7:02:14 PM EDT
[#2]
Is that more common using my type of antenna which is a 43' vertical?
7/13/2014 7:57:09 PM EDT
[#3]
Quote History
Quoted:
Not ground wave. NVIS. Signal goes straight up an then back down
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Highly doubt that on 20 meters
7/13/2014 7:58:21 PM EDT
[#4]

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Quoted:


Is that more common using my type of antenna which is a 43' vertical?
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Were you talking to them?
 
7/13/2014 7:59:58 PM EDT
[#5]
No, actually NVIS is easier with a more horizontal antenna... mounted too low.
7/13/2014 8:13:13 PM EDT
[#6]
You won't get NVIS on 20m nor with a vertical..

Ground waves are caused by the ground ......


I'm sure someone has a better explanation


Did you qso with them or just listen?
7/13/2014 9:19:54 PM EDT
[#7]
Just listened, they were still going when I quit. All 4 of them were going roundtable.
I get a fair number of one sided conversations, I'm not sure if it something on my end or just a common occurance. I still have a limited number of radials down for my 43' vertical. I have the stuff for a lot more, just get tired quickly so I get 2-4 down a day at most.





I'm really suprised I get anything. I figured it would take months at a minumum or longer just to get a contact. I just made a quick contact with the Czech republic but he's running a contest or something and going thru them quickly.





 
7/13/2014 9:28:32 PM EDT
[#8]
Probably backscatter, ground wave would be impossible at those kinds of distances on 20m.
7/14/2014 2:57:05 AM EDT
[#9]
Damn flatlander problems.  Come on up to the mountains where skip rules.  
7/14/2014 6:10:23 AM EDT
[#10]
This causes ground-wave:



7/14/2014 6:16:25 AM EDT
[#11]
Quote History

And the fool was talking to me on it last night instead of night swimming with the great whites out there
7/14/2014 8:18:22 AM EDT
[#13]
Quote History
Quoted:



Highly doubt that on 20 meters
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Quote History
Quoted:
Quoted:
Not ground wave. NVIS. Signal goes straight up an then back down



Highly doubt that on 20 meters


Oops missed the 20m part. Probably airwave for the close in contacts. But the 300mi is odd.

Ground wave mainly exists on 160m
7/14/2014 3:29:52 PM EDT
[#14]
Probably just multiple skips on 20 m, shallow takeoff angle from the vertical.

7/14/2014 5:16:29 PM EDT
[#15]
To be fair, I did spend most of the day on the beach. And I'll spend most of tomorrow on the beach.

7/14/2014 6:11:54 PM EDT
[#16]
Just picked up a another guy in MS on 20m. I mapped it out, he is about 115 miles away.
7/15/2014 11:31:07 AM EDT
[#17]


NVIS depends on the MUF. If the MUF is near the 20 meter band, you will get a more pronounced NVIS effect.


Sunlight excites the D-layer allowing signals to more readily pass through it. At night the D-layer cools off, condenses and reflects signals more readily.