Differences

This shows you the differences between two versions of the page.

--- hf:antennas [2024/01/23 18:35] – [The Loop] m0nvk
+++ hf:antennas [2024/01/23 18:47] (current) – m0lte
@@ Line 6: / Line 6: @@
 Dipoles are band specific.
-{{:hf:dipole_image.gif?400|}}
+{{:hf:dipole_image.gif}}
-===== Good Resources =====
+==== Good Resources ====
 https://www.hamradiodx.net/beginner-hf-antennas\\
@@ Line 44: / Line 44: @@
 If we look at the radiation patterns of regular polygons in free space, fed either at a corner or in the center of one side, there is not a lot of practical difference among them:
-polygon	feedpoint	gain dBi	impedance
+{{:hf:loop_table.jpg?400|}}
-triangle	corner	2.79	121 ohms
-triangle	side	2.96	115 ohms
-square	corner	3.19	129 ohms
-square	side	3.30	126 ohms
-hexagon	corner	3.43	134 ohms
-hexagon	side	3.48	132 ohms
-octagon	corner	3.51	136 ohms
-octagon	side	3.54	135 ohms