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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.
The off-center-fed dipole is a versatile multiband HF antenna when properly fed. Understanding how it works can pay dividends. Here is what you need to know.
Antenna Length Calculator. 1. What type of antenna do you want to build? Dipole. Fan Dipole. Inverted Vee. Off Center Fed Dipole. Vertical. 2. What frequency will you be operating on? Frequency: MHz. Meters Feet. 3. Here's your antenna...
Dipole and Inverted Vee Antenna Calculator. Sufficiently accurate for wire antennas up to 30 Mhz. The basic formula for determining the wire length of a center fed, 1/2 wave wire dipole or inverted Vee antenna (30 mhz or less) is 468/freq-in-Mhz for feet and inches or 143/freq-in-Mhz for meters .
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.
The following article attempts to analyse the Off Centre Fed (OCF) dipole in a typical amateur radio installation covering 7, 14, 21 and 28 MHz, with particular emphasis on the losses. The analysis is carried out by using programs which are available on the internet.
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.
