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Re: [TowerTalk] HFTA data files

To: "Tower Talk List" <>
Subject: Re: [TowerTalk] HFTA data files
From: "Jim Brown" <>
Date: Fri, 26 Jun 2009 10:26:37 -0700
List-post: <">>
On Fri, 26 Jun 2009 09:56:14 -0700, Jim Brown wrote:

> Luckily lithuanian landscape is quite flat so real terrain data would 
>not be far from flat data. Finally I think GPS also could help me or my
>friends to find real data. 

That certainly makes it easier. I just thought of another way to get 
this data. The program GOOGLE EARTH uses a world wide database of 
satellite photographic and terrain data. The accuracy and level of 
detail of this data varies widely from one location to another, even 
within the same country. Once you find your location, you can use the 
"RULER" function to draw radials and measure their length. You can also 
turn the viewpoint so that you are perpendicular to that line (that is, 
you are looking at the line sideways, and from a low angle) and you will 
see how the terrain goes up and down. And as you move your cursor, there 
is a window at the bottom of the screen that gives the elevation of the 

Google Earth is FREE, and is both VERY useful and very interesting. At 
my QTH, you can see my house and my ham shack, even the skylight windows 
on the roof. 


Jim K9YC


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