Differences

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--- en:gpant [2016/06/11 19:24] – [Ground plane 1/4 lambda antenna] kaklik
+++ en:gpant [2019/05/03 15:28] (current) – [Antenna location] fluktuacia
@@ Line 1: / Line 1: @@
 ====== Ground plane 1/4 lambda antenna ======
+[[http://www.ccars.org/projects/2mgp/tech_2mgp.htm|GP antenna]] is composed of two main emitter parts (vertical part), radial (horizontal part) and a coaxial connector (mainly creating a mechanical support).
-Disadvantage, on the other hand, is that the radiation pattern drops sharply to zero at zenith, making it very difficult to detect meteors flying directly over the head (compared to visual observation).
-[[http://www.ccars.org/projects/2mgp/tech_2mgp.htm|GP antenna]] is composed of two main emitter parts (vertical part), radial (horizontal part) and coaxial connector (mainly creating mechanical support).
+Its disadvantage i that the radiation pattern drops sharply to zero at zenith, making it very difficult to detect meteors flying directly over the head (compared to visual observation).
+==== Construction ====
 Antenna socket connector is [[http://rasel.cz/www/obrazky/velke/209-210.jpg|panel mount UHF connector]] and
 antenna plug is [[http://rasel.cz/www/obrazky/velke/209-002_001.jpg|UHF coaxial connector]].
 {{gallery>:cs:antennas?gp_plast*.jpg&150x150&crop&lightbox}}
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 Active element should be placed far enough (at least 2 lambda) from any large or conductive objects such as walls of buildings, wires, railing etc.
-The most suitable direction of antenna radial is to the west towards the GRAVES radar where we expect the best reflections from meteor trails.
+The most suitable direction of antenna radial is to the west, towards the GRAVES radar where we expect the best reflections from meteor trails.