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Re: [TenTec] New and Improved Terminology (NVIS origins)

To: <ken.d.brown@hawaiiantel.net>, "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Subject: Re: [TenTec] New and Improved Terminology (NVIS origins)
From: "Rick - NJ0IP / DJ0IP" <Rick@DJ0IP.de>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 4 Jan 2011 18:44:45 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Ken,

The number of radials won't really affect the angle of radiation.
With a poor ground, you will still have a low take-off angle; you'll just
had a heck of a lot of ground losses.

73
Rick


-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Ken Brown
Sent: Monday, January 03, 2011 11:24 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] New and Improved Terminology (NVIS origins)


>  
> The technology has been around at least since WW2,
I always though of short haul skip or NVIS as a phenomena rather than a 
technology.
Yes, you can intentionally build antennas to favor high angle radiation, 
and when you do that you could call it "NVIS Technology."
For most hams operating on 40 and 75/80 meters, antennas with high angle 
radiation are more of a default, or accidental situation,
because that is the best we could usually do, due to height limitations 
on our horizontal antennas and poor radial systems on our verticals.
Then we work the stations we can work, with the antenna system we have. 
And that is often short skip.
Long path DX. Is that a technology or a phenomena? You could call your 
stack of six element yagis and your big amplifier "Long Path Technology".
I think that propagation modes including short skip or NVIS are phenomena.

DE N6KB

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