| Style 4018-M VHF 9dB Phased 1/2-wave elements in a collinear array with a coaxial choking sleeve to suppress cable radiation
Used primarily for land-based stations and on commercial vessels, the Style 4018-M has a special sleeve for mast mounting. Otherwise, it's the same as the Style 4018.
- Brass and copper elements
- Chrome-plated brass mid section ferrules and aluminum sleeve bottom ferrule
- SO-239 connector at base
- Suggested mount: Mast mount using supplied 1-3/4" U-bolts. The 4018-M can be strapped to a larger mast if steel banding (not supplied) is used.
- Two sections: base 162", tip 66"
Style 4018-M VHF 9dB Technical Specifications:
- Frequency: VHF Marine band
- Bandwidth (within 2.0:1 VSWR): 3 MHz
- SWR: 1.5:1 at 156.8 MHz
- Impedance (Ohms): 50
- Gain: 9 dB
- Max. Input (Watts): 25
- DC Ground: NO
- Termination: SO-239
- Height (feet): 19
- Polarization: Vertical
- Radiation pattern: Omni-directional
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