Dipole Antenna for the 50-MHz Band

Figure 5 Dimensions of Antenna Tuned to 50.1- MHz

Figure 6 Center Insulator with Coaxial Cable

Parameters of the antenna were measured in the shack with help of MFJ- 259B and with help of MICRONTA SWR meter. The SWR meter was calibrated before the measurement. After installing the antenna in its place, the antenna parameters were measured with the help of the device and with the help of the SWR meter. Table 1 shows the antenna parameters measured with the MFJ- 259B.

Table 2 shows the antenna parameters measured with the calibrated SWR meter. As you can see data from MFJ- 259B not matched to data that the MICRONTA SWR meter shows. It may be lots different reasons- main of them is the some RF that MFJ- 259 pick-up through long coaxial cable. As well antennas for 50- MHz band as usual works good at 144- MHz band- it is third harmonic. Table 3 shows the antenna parameters of the antenna at 144- MHz band measured with the MFJ- 259B.

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