|
|
for a Dipole or Inverted Vee Antenna
This calculator uses a "K" multiplying factor value of .975 to adjust for the
effect of antenna wire diameter on length which is applied to the free-space
half-wavelength equation. This works very well with #18 to #12 wire sizes.
Enter the Frequency in MHz.
An antenna for (Enter a Freq Above) MHz will be approximately:
DIPOLE = Inches in overall length and Inches for one side.
INVERT VEE = Inches in overall length and Inches for one side.
Remember to cut your antenna wire longer than shown here and then adjust the
length to the desired frequency. Resonant frequency of an antenna depends on
the height above ground and the conductivity of the ground beneath the antenna.
The Inverted Vee is slightly shorter that a horizontal Dipole.
Dipole & Inverted Vee Measurements for FISTS HF Frequencies
| Frequency MHz | Total Length | One Side Length | ||
| 3.558 | Dipole 134 Ft 9.9 In Vee 130 Ft 4.9 In |
67 Ft 4.9 In 65 Ft 2.5 In |
||
| 7.058 | Dipole 67 Ft 11.6 In Vee 65 Ft 8.9 In |
33 Ft 11.8 In 32 Ft 10.4 In |
||
| 14.058 | Dipole 34 Ft 1.5 In Vee 33 Ft 0.1 In |
17 Ft 0.7 In 16 Ft 6.0 In |
||
| 21.058 | Dipole 22 Ft 9.4 In Vee 22 Ft 0.4 In |
11 Ft 4.7 In 11 Ft 0.2 In |
||
| 28.058 | Dipole 17 Ft 1.2 In Vee 16 Ft 6.4 In |
8 Ft 6.6 In 8 Ft 3.2 In |
Page Last Updated - May 6, 2023 at 12:56 PDT