File:DifferentFrequencies-NPS.png
(Redirected from File:DifferentFrequencies-NPS.gif)
No higher resolution available.
DifferentFrequencies-NPS.png (400 × 200 pixels, file size: 14 KB, MIME type: image/png)
Captions
Captions
Add a one-line explanation of what this file represents
Summary edit
| Description |
English: Ray diagram showing the effect of using different frequencies at the same transmission angle. The blue ray frequency is greater than the MUF and passes into space. The green ray frequency is less than the MUF but greater than the E layer MUF. This is usually the best frequency region to use for long range communications and is usually where the FOT (equal to 0.85 x MUF) exists. The orange ray frequency is less than the E layer MUF and greater than the LUF. This is best for medium range (around 500 to 1500 km) transmissions. The red ray is less than the LUF and is absorbed in the D layer.
Deutsch: Strahlendiagramm, das den Effekt der Nutzung verschiedener Frequenzen bei gleichbleibendem Abstrahlwinkel darstellt. Die Frequenz des blauen Signals ist größer als die MUF und passiert ins All. Die Frequenz des grünen Signals ist kleiner als die der MUF, aber größer als die MUF der E-Schicht. Dies ist gewöhnlich der beste Frequenzbereich für Weitbereichsverbindungen und liegt im Bereich der FOT (gleich 0.85 x MUF). Die Frequenz des orangen Signals ist kleiner als die MUF der E-Schicht und größer als die der LUF. Diese ist die beste für Mittelbereichsverbindugen (um 500 bis 1500 km). Die Frequenz des roten Signals ist kleiner als die LUF und wird in der D-Schicht absorbiert. |
| Date | 1/12/2004 |
| Source | http://www.weather.nps.navy.mil/~psguest/EMEO_online/module3/module_3_2b.html |
| Author | Naval Postgraduate School |
| Permission (Reusing this file) |
http://www.nps.navy.mil/NPS/Disclaimers.htm |
Licensing edit
|
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
|
 |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
Original upload log edit
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 14 October 2008, 20:23:21 | 400 × 200 (13098 bytes) | Sebman81 (talk · contribs) | {{Information |Description={{en|1=Ray diagram showing the effect of using different frequencies at the same transmission angle. The blue ray frequency is greater than the MUF and passes into space. The green ray frequency is less than the MUF but greater |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:20, 4 January 2015 | | 400 × 200 (14 KB) | GifTagger (talk | contribs) | Bot: Converting file to superior PNG file. (Source: DifferentFrequencies-NPS.gif). This GIF was problematic due to non-greyscale color table. |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
- File:DifferentFrequencies-NPS.gif (file redirect)
File usage on other wikis
The following other wikis use this file:
- Usage on af.wikipedia.org
- Usage on da.wikipedia.org
- Usage on de.wikipedia.org
