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This type of antenna is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It’s a dipole fed off center with a 4:1 balun at the offset feed point. The antenna shown covers 80, 40, 20 and 10 meters.
A windom antenna is a single-wire-fed antenna which is worked against ground. It's a grounded vertical wire connected to a horizontal portion acting as a top hat capacitance. On the other hand, an OCF dipole is an ungrounded dipole antenna fed with twin-conductor line, either coaxial or open wire parallel conductors.
80-10 meter OCF antenna layout. For the PAL8010OCF, the impedance is very well behaved in a limited, easy to match range throughout the 1-54 MHz range and, in fact, that antenna also works very well on 6 meters with very good gain.
18 sty 2020 · An Off Center Fed Dipole is an easy way to use one antenna for multiple bands. The 80m version of the OCF Dipole is supposed to be capable of 80, 40, 20, and 10m bands. With a tuner, you are also supposed to be capable of using some of the WARC bands.
Off-center-fed dipoles (OCFs) are 1/2-wavelength wire antennas fed at neither the center nor the end, but somewhere between--off-center. They look like Figure 1. OCFs are derived from the Windom antenna, a 1929 concoction using a single- wire feed attached to the antenna element at what was believed to be the 600-ohm point.
7 lip 2020 · The OCF or Off Center Fed Dipole antenna is much like a conventional dipole antenna in that the formula you use to calculate the length of it is the same. That is: 468 / Frequency Mhz will give you the overall length of the antenna.
24 mar 2021 · This antenna works without a tuner over the entire bandwidth of the 80, 40, 30, 20, 15 and 10 m-band, simply by adjusting the output-tank of your tube power amplifier. —If your final output stage is a transistor amplifier, you definitely will need an antenna-tuner though.—.
