Sirio CX-410 3/4 Wave J-Pole Antenna


Introducing the Sirio CX-410 3/4 Wave J-Pole Antenna, a versatile and high-performance antenna designed for amateur radio enthusiasts and professionals alike. With its innovative design and advanced features, this antenna delivers exceptional performance across a wide range of frequencies.


Featuring a 3/4 wave J-pole configuration, the Sirio CX-410 provides efficient signal transmission and reception, ensuring clear and reliable communication. With an impedance of 50 Ohms and a gain ranging from 2 dBd to 4.15 dBi, this antenna offers enhanced performance and coverage for both transmitting and receiving signals.

Capable of handling a maximum power of 200 Watts, the Sirio CX-410 is built for high-power operation without sacrificing performance. Whether you’re engaging in casual conversations or participating in contests or emergency communications, this antenna provides the reliability and performance you need.

Standing at a height of 625 mm and weighing just 450 grams, the Sirio CX-410 offers a compact and lightweight solution for your communication needs. Its streamlined design minimizes visual impact while maximizing performance, making it an ideal choice for a variety of mounting locations. Compatible with mounting masts ranging from 35 to 42 mm, this antenna offers versatility and ease of installation. Whether you’re mounting it on a mast or a tower, you can trust that the Sirio CX-410 will provide reliable performance and coverage.


  • Low-gain, Omnidirectional
  • Base station antenna, Mono-band
  • Made of aluminium alloy 6063 T-832
  • Protection from static discharges DC-Ground
Electrical DataMechanical Data
Type: 3/4 λ coaxial J-poleMaterials: Aluminium, Brass, Steel, Nylon
Frequency Range SWR ≤ 1.5: 410 – 425 MHzWind Load: 25N 
Impedance: 50 ΩResistance: 150 km/h / 180 km/h
Radiation (H-plane): 360° omnidirectionalWind Surface: 0.02 m²
Radiation (E-plane): Beamwidth -3 dB = 60°Height: 625 mm
Polarization: Linear verticalWeight: 450 g
Gain: 2 dBd – 4.15 dBiMounting Mast: 35 – 42 mm
Max. Power (CW) 30°C: 250W
Grounding Protection: All metal parts are DC-grounded, and the inner conductor shows a DC-short
Connector: N-female

Additional information

Weight10 kg