Marine AntennasCXL 70-3LW/...

Lightweight, Medium Duty, 3 dBd Base Station and Marine Antenna for the 450 MHz Band


  • CXL 70-3LW/… 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 antenna meets the demand for a medium duty, cost-effective antenna to be chosen, when the exceptional mechanical capabilities of our extremely rugged heavy-duty model CXL 70-3C/… are not needed.
  • 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” mast mount – a lightweight, multipurpose, epoxy-coated mounting bracket made of non-corrosive aluminium.
  • The accompanying U-bolts and fittings are made of stainless steel.
  • 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 70-3LW/… is a vibration-proof, lightweight, slim-line, corrosion resistant, modern style base station and marine antenna.


Model CXL 70-3LW/...
Frequency 30 MHz wide frequency segments within 380 - 470 MHz.
See model survey.
Antenna Type Collinear, broad-band
Max. Input Power 150 W
Polarisation Vertical
Pattern Type Omnidirectional
3 dB Beamwidth, E-Plane 30 °
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, 015DE50
Connection(s) N(f)
Materials Shroud : Polyurethane-coated glass fibre
Mounting bracket : Seawater resistant aluminium, epoxy-coated
Clamps : Stainless steel
Colour White (RAL 9003)
Wind Area 0.026 sq. m / 0.28 sq. ft
Wind Load 33 N (160 km/h)
Dia. At Top End 16 mm / 0.63 in.
Dia. At Bottom End 23 mm / 0.91 in.
Height Approx. 1510 mm / 59.45 in.
Weight Approx. 1.3 kg / 2.87 lb.
Mounting On 16 to 54 mm
/ 0.63 to 2.13 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 Gain and VSWR curves

Typical Gain and VSWR curves

Typical radiation pattern (E-Plane)

Typical radiation pattern (H-Plane)

Multi-purpose mounting bracket

Ordering Designations

Model Product No. Frequency
CXL 70-3LW/s 110000092 380 - 410 MHz
CXL 70-3LW/f 110000088 406 - 430 MHz
CXL 70-3LW/l 110000091 420 - 450 MHz
CXL 70-3LW/h 110000089 440 - 470 MHz

Please Note

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