info@kparc.org(813) 642 0651

Dipole Calculator

DIPOLE CALCULATOR

Imperial

 

Metric

 




Desired Frequency:


Full Dipole Length
-' - --"
-


Each Side/Leg
-' - --"
-

Desired Frequency:


Full Dipole Length
-m -cm -mm
-.--


Each Side/Leg
-m -cm -mm
-.--

Now reset the length of your dipole to the length below and you should be resonant on your desired frequency.

-' - --" = Full Dipole Length
-.-'

-' - --" = Each Side/Leg
-.- ft.


The K5HH Antenna Calculators are for demonstration purposes only and may not reflect actual numbers for your equipment. I have, in good faith, given my best efforts to provide a calculator that will save ham operators time in setting up their antennas. However, ultimate responsibility for the proper use of your equipment lies with you. v1.1.0

Now reset the length of your dipole to the length below and you should be resonant on your desired frequency.

Full Dipole Length
-m -cm -mm
-.--

Each Side/Leg
-m -cm -mm
-.--


The K5HH Antenna Calculators are for demonstration purposes only and may not reflect actual numbers for your equipment. I have, in good faith, given my best efforts to provide a calculator that will save ham operators time in setting up their antennas. However, ultimate responsibility for the proper use of your equipment lies with you. v1.1.0


The measurements below are for building a simple Dipole Antenna. The Wire Size can range from 16 AWG to 12 AWG. The larger the wire, the wider the bandwidth. The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. Place a 1:1 Balun on the Antenna end of the Feedline. The Balun matches the Balanced Antenna into the Unbalanced Coax Cable. The balun will keep stray antenna currents off of the Feedline and help to keep stray RF out of the Radio Shack. If a Ferrite Balun is used, the balun needs to be rated at least twice the operating wattage to prevent the balun from overheating. This will help mitigate mismatches and stray RF due to using the antenna at frequencies other than what the antenna was specifically designed for.

20 Meters
14.000 33.43 16.71
14.100 33.19 16.60
14.200 32.96 16.48
14.220 32.91 16.46
14.300 32.73 16.36
14.313 32.70 16.35
17 Meters
18.068 25.90 12.95
18.130 25.81 12.91
15 Meters
21.000 22.29 11.14
21.100 22.18 11.09
21.200 22.08 11.04
21.300 21.97 10.99
12 Meters
24.890 18.80 9.40
24.950 18.76 9.38
10 Meters
28.000 16.71 8.36
28.500 16.42 8.21
29.000 16.14 8.07
29.500 15.86 7.93
160 Meters
MHz “L” (Feet) “E” (Feet)
1.800 260.00 130.00
1.900 246.32 123.16
2.000 234.00 117.00
80 Meters
3.500 133.71 66.86
3.600 130.00 65.00
3.700 126.49 63.24
3.800 123.16 61.58
3.900 120.00 60.00
4.000 117.00 58.50
60 Meters
5.331 87.80 43.90
5.347 87.53 43.77
5.367 87.21 43.60
5.371 87.13 43.56
5.404 86.61 43.31
40 Meters
7.000 66.86 33.43
7.100 65.92 32.96
7.150 65.45 32.73
7.200 65.00 32.50
7.300 64.11 32.05
30 Meters
10.100 46.34 23.17
10.150 46.11 23.05