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Figure 1

Figure 2

Figure 3

Figure 4

Tables
Lengths for 1/2 Wave Dipole
MHz Each Leg Total
03.70 63.2 126.4
03.90 60.0 120.0
07.20 32.5 065.0
14.20 16.5 032.0
24.80 09.9 019.8
21.50 11.0 022.0
28.30 08.2 016.4
Impedance Antenna Impedance
Radio Output = 50 Ohms Vertical Base = 30 Ohms
Coax RG/58 = 50 Ohms Dipole = 50 Ohms
Coax RG/59 = 75 Ohms Inverted V = 75 ± Ohms
TV Twinlead = 300 Ohms Loop = 100 ± Ohms
Ladderline = 450 Ohms    

SWR = Standing Wave Ratio
Impedance = The apparent opposition to the flow of an alternating current and is analogous to the actual electrical resistance to a direct current.