Uploaded May 2017 | Updated September 2026, 16 hours ago

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In this video I show how different antennas react when close to the ground. This is actually a well-known phenomenon in the antenna World and shows how important the height over the ground can be. I find the Mad Mushroom is the best, but the folded dipole is a close second and thus I use it for convenience. And for all of you Taranis users - Yes this works exactly the same with the Taranis. The radio is irrelevant.

_________________________Folded dipole file_____________________
CM CIRCPOL=ON TGAIN=RCP-LCP
CM
CE
SY loop = 130 'loop length in mm
SY shortleg = 15
SY Leg = (loop/2) - 2*shortleg
SY Pitch=45 'Pitch Angle
SY Height =450
SY A=100 'Arc Angle
SY Feed=2 'Feed Length to Center Coax
SY WR=.3 'Wire Radius
GW 100 3 0 0 Feed/2+Height 0 0 Leg/2+Height WR
GW 200 3 0 0 Leg/2+Height shortleg 0 Leg/2+Height WR
GW 300 5 shortleg 0 Leg/2+Height shortleg 0 -Leg/2+Height WR
GW 400 3 shortleg 0 -Leg/2+Height 0 0 -Leg/2+Height WR
GW 500 3 0 0 -Leg/2+Height 0 0 -Feed/2+Height WR
GW 800 1 0 0 -Feed/2+Height 0 0 Feed/2+Height WR
GS 0 0 0.001
GE 0
LD 5 0 0 0 58000000
GN 1
EK
EX 0 800 1 0 2 0
FR 0 0 0 0 2400 0
RP 0 73 73 1001 -90 0 5 5
EN

__________________________Stock antenna file______________
CM CIRCPOL=ON TGAIN=RCP-LCP
CM
CE
SY Feed=28.16753 'Leg Length
SY Pitch=0 'Pitch Angle
SY height=8
SY WR = .31
SY WRcable=2
SY segments = 3
SY Height = 760

GW 800 3 feed 0 Height 0 0 Height WR
GW 901 2 0 0 Height -feed 0 Height WRcable
GS 0 0 0.001
GE 0
GN 1
EK
EX 0 800 3 0 1 0
FR 0 40 0 0 2400 20
RP 0 73 73 1001 -90 0 5 5
EN

________________________5dbi antenna file_____________________
CM CIRCPOL=ON TGAIN=RCP-LCP
CM
CE
SY Feed=84 'Leg Length
SY Pitch=0 'Pitch Angle
SY height=8
SY WR = .31
SY WRcable=2
SY segments = 3
SY Height = 450

GW 800 7 feed 0 Height 0 0 Height WR
GW 901 7 0 0 Height -feed 0 Height WRcable
GS 0 0 0.001
GE 0
GN 1
EK
EX 0 800 7 0 1 0
FR 0 40 0 0 2400 20
RP 0 73 73 1001 -90 0 5 5
EN