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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, (often abbreviated as OCF Dipole) is a simple multiband dipole antenna with good performance.
Coax fed OCF ‘Windom’ antenna. Here is my home HF antenna. It is an off centre fed dipole, with 10 feet of vertical radiator. It needs no tuner on 40m, 20m and 10m. It also works fine on all bands above 40m with a tuner, and even below 40m on 60m, and 80m, although the coax losses will be higher.
7 lip 2020 · Building an Off Center Fed (OCF) Dipole Antenna. by kb9vbr | Jul 7, 2020 | Antennas. For this year’s ARRL Field Day event I was looking to put up a homebrew antenna that was easy to construct‚ easy to deplay‚ and give me multi-band support. I settled on an 80 meter Off Center Fed Dipole antenna.
80m OCF Dipole. A Simple 7-Band Wire Antenna. COVERAGE: 80/40/30/20/15/12/10m. This antenna was built just in time for CQWW CW in 2011. It has been my primary antenna for all bands since then. In 2020 I replaced it with a similar OCFD having an improved Balun and a different feedpoint.
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.
See our measured SWR numbers in the 4-Band, 7-Band, and 8-Band descriptions below. Buckmaster OCF Dipole Antennas are a great simple way to get on the air and work multiple bands! They are shipped ready to go, all you have to do is screw in your coax and raise the antenna in the air.
