Marine AntennasCXL 450-3LW-SS

3 dBd Base Station and Marine Antenna for the 450 MHz Band


  • CXL 450-3LW-SS is a 3 dBd, vertically polarised, omnidirectional base station and marine antenna, which covers the UHF band in 4 models with up to 10 MHz overlap.
  • The carefully designed radiating element is sealed in a high-quality, conical glass fibre tube with low wind-load which will ensure performance undisturbed by corrosive environments.
  • Provided with the sturdy “LW-SS” mast mount –  a multipurpose bracket made of stainless steel (AISI 316L).
  • The accompanying U-bolts and fittings are made of stainless steel (AISI 304).
  • To be mounted on vertical or horizontal mast tubes, 16 to 54 mm in outer diameter.
  • The cable can be led either on the outside or along the inside of the mast tube.
  • Large bandwidth with respect to both VSWR and gain.
  • To substantially reduce noise caused by atmospherical discharges, all metal parts in the antenna are DC-grounded. Consequently, the antenna shows a DC-short across the coaxial cable.
  • The CXL 450-3LW-SS is a vibration-proof, lightweight, slim-line, corrosion resistant, modern style base station and marine antenna.


Model CXL 450-3LW-SS/...
Frequency 30 MHz wide frequency segments within 380 - 470 MHz.
See model survey.
Antenna Type Collinear, broad-banded
Max. Input Power 150 W
Polarisation Vertical
Pattern Type Omnidirectional
3 dB Beamwidth, E-Plane 30 °
3 dB Beamwidth, H-Plane Omnidirectional
Impedance 50 Ω
Gain 3 dBd (5.2 dBi)
VSWR < 1.5:1
Bandwidth 30 MHz
Antistatic Protection All metal parts DC-grounded (Connector shows a DC-short)
HCM Code(s) HCM000ND00, 040DE00
Connection(s) N(f)
Materials Shroud : Polyurethane-coated glass fibre
Mounting bracket : Stainless acid-proof steel (AiSi 316L)
U-bolt and fittings : Stainless steel (AiSi 304)
Colour White (RAL 9003)
Wind Area 0.029 sq. m / 0.31 sq. ft
Wind Load 33.6 N (160 km/h)
Dia. At Top End 16 mm / 0.63 in.
Dia. At Bottom End 23 mm / 0.91 in.
Height Approx. 1400 mm / 55.12 in. (dep. on. freq.)
Weight Approx. 1.55 kg / 3.42 lb.
Mounting On 16 to 54 mm / 0.63 to 2.12 in. dia. mast tube
Operating temperature range -35 °C to +70 °C
Survival Wind Speed 200 km/h
Ingress Protection IP66

Diagram and Mounting

Typical radiation pattern (E-Plane)

Typical radiation pattern (H-Plane)

Multi-purpose mounting bracket

Ordering Designations

Model Product No. Frequency
CXL 450-3LW-SS/s 100000681 380 - 410 MHz
CXL 450-3LW-SS/f 100000682 406 - 430 MHz
CXL 450-3LW-SS/l 100000683 420 - 450 MHz
CXL 450-3LW-SS/h 100000684 440 - 470 MHz

Please Note

The antenna is delivered with a DC-connection between the antenna element and the mounting bracket.