MultiBand End-Fed Antennas Selector Tool
MultiBand End-Fed Antennas Selector Tool
We offer three types of multiband end-fed wire antennas:
- End-Fed Off-Center (EFOC)
- End-Fed Half-Wave (EFHW)
- End-Fed Long Wire (EFLW)
Use the sliders below to find out which antenna is best suited to your available space. Span refers to the horizontal space required to install the antenna as a flat-top.
For flat-top and sloper configurations with the feedpoint high, the vertical space should be set to 0. For inverted L and inverted U configurations, adjust the vertical space slider to represent the total vertical space available.
Note: Required span is an approximation; the exact space needed will depend on how you route bends, droops, and end supports.
Click on the antenna type to go to the specific product page of the antenna!
Blue = works with typical internal tuner Red = typically requires an external tuner
| Antenna Type | Wire Length | Span | Bands | Optimal Bands |
|---|
EFOC (End-Fed Off-Center)
Tapped or transformer-fed away from the current maximum to broaden band coverage with manageable impedance. Great general-purpose multiband option with a tuner.
EFHW (End-Fed Half-Wave)
Transformer-fed at very high impedance (typically ~2–3 kΩ). Naturally resonates on its half-wave fundamental and odd/even harmonics. Low tuner dependence on its designed bands.
EFLW (End-Fed Long Wire)
Non-resonant lengths that cover many bands with a wide-range tuner. Very flexible on space/layout; performance depends on length, height, and counterpoise/ground coupling.