Copyright Palomar Engineers®, Inc., 1965-2019
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Product Manual
160-6 Meter
Double Nested Off Center Fed
Antenna
Part#: PAL-OCF1606
OCF antennas are very convenient as they will allow multiple bands of operation with a simple wire antenna
which is fed off center. Rather than feeding the conventional 33%/67% we like the 29%/71% feed point
wherein the feed point is 21% from one end and fed with a 4:1 OCF Current balun with built in feed line choke
For the PAL-OCF1606 the short side is 49.9 feet and the long side is
184feet. The 40/20 meter resonator stub allows choice of 40 meters at low SWR or 20 meters at low SWR. As
originally shipped the stub is adjusted for minimum 40 meter SWR.
Installation
For best results support center at 30+ feet and ends over 15 feet. Angle of feed each side must be greater than
45 degrees or 120 – 180 degrees total between each side preferred. Any length of 50 ohm feed line ok but
longer feed lines over 50 feet may show reduced SWR on some bands due to losses in feed line and soil
conductivity, nearby objects, etc. Due to local ground conditions, antenna height and feed line length, SWR
may vary from samples shown and an antenna tuner may be required or some bands to bring SWR at end of
feed line to acceptable levels. Use a good quality 52 ohm cable adequate for the power level of your station.
