Model SB-230
HF Shipboard Marine Antenna
2-30 MHz Broadband

Frequency Range: 2 – 30 MHz
VSWR: ≤ 2.0:1 typical, 3.0:1 max
Polarization: Vertical
Size: 35.3 feet (10.76 meters)

View Product Specs PDF

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SKU: HF-2.30 Category:


The SB-230 HF omni-directional antenna is a broadband, vertically polarized antenna primarily designed for shipboard use, but can also be used as a fixed base station with a suitable ground screen. The antenna operates over the frequency band of 2 MHz to 30 MHz without the need of a tuner or coupler. It has a power handling capability of 1kW, average. The monopole is 35 feet long and is constructed in two sections, which screw together. The base of the monopole is a flanged coaxial design which bolts directly to the Antenna Base Unit.

Spec Sheet


Frequency Range 2 – 30 MHz
Polarization Vertical
Radiation Pattern Omnidirectional
VSWR ≤ 2.0:1 typical, 3.0:1 max
Nominal Impedance 50 Ohms
Power Rating (RMS) 1000 W (1kW) average


Antenna Type Broadband HF Whip
Standard Color Haze Grey
RF Connector Female N-type 8 each 0.56” (1.42 cm) diameter bolt
holes on a 15.25” (38.7 cm) bolt circle
Height (overall) 35.3 feet (10.76 meters)
Diameter 3.5 inch (8.9 cm) tapered
Weight 175 pounds (79.4 kg)


Temperature -54C to +65C
Humidity 0-100%
Shock MIL-STD-901C, Grade A, Class 1
Vibration MIL-STD-167-1, Type I
Wind Speed 100 knots
Ice 4.5 PSD on All Exposed Surfaces
Dust Test per MIL-STD-810 Method 510.2