Sirio CX148U CW Base Antenna 148 – 152 MHz


Enhance your communication capabilities effortlessly with the Sirio CX148U CW Base Antenna. Designed to meet the needs of professionals and enthusiasts alike, this Type 3/4 λ coaxial J-pole antenna delivers unparalleled performance.


Experience seamless connectivity as its radiation omnidirectional feature ensures optimal signal reception from all directions. With linear vertical polarization, this antenna guarantees a consistently strong and stable connection for crystal-clear communication.

Achieve remarkable gains with a range of 2 dBd – 4.15 dBi, enabling you to extend your reach even in challenging environments. Delivering power up to 250 W (CW), rest assured that your signals remain robust throughout extended usage periods.

Safety is paramount, which is why our Sirio CX148U CW Base Antenna incorporates grounding protection with reliable DC-Ground functionality. This prevents any potential damage caused by electrical surges or lightning strikes, ensuring both peace of mind and long-lasting durability.

Sirio CX148U 148-152 MHz 250W (CW)
Sirio CX148U 148-152 MHz 250W (CW)

Designed for convenience, installation becomes effortless thanks to its UHF-female connector (SO-239) combined with high-quality materials such as aluminum, brass, galvanized steel, and Zamak components. Weighing just 750 gms., it adds minimal weight while offering maximum performance.

Mounting it on-mast positions allows for an optimized setup that maximizes coverage without compromising esthetics or practicality. Capable of enduring various weather conditions due to its sturdy design elements and exceptional craftsmanship.


Electrical Data

Type 3/4 λ coaxial J-pole
Radiation Omnidirectional
Polarization Linear Vertical
Frequency Range 148 – 152 MHz
Systems 2m-HAM, VHF Marine Band, ORBCOMM M2M, AIS-162 MHz, ISM-169 MHz
Gain 2 dBd – 4.15 dBi
Power 250 W (CW)
Connector UHF-female (SO-239)
Grounding Protection DC-Ground


Mechanical Data

Materials Aluminium, Chromed brass, Galvanized steel, Zamak
Dimensions 1580 mm
Weight 750 g
Mounting Type On-Mast

Additional information

Weight 1 kg