Crossbow Panel Circular Polarized FM Antenna

Crossbow Panel Circular Polarized FM Antenna

The Crossbow Panel Circular Polarized FM Antenna delivers an omnidirectional Horizontal Radiation Pattern. This requires four panels mounted around a square structure with a face width of 2m. Please refer to the pattern in the PDF download below. The antenna design delivers broadband and supports the transmission of several high power FM channels.

The JFCB has a proven track record of performance. It covers more than ten years as a leading high power, multi-channel FM circular polarization panel antenna.

Both the screen and the dipole assembly include a heavy duty galvanized steel construction. This ensures long trouble-free service under the toughest of environmental conditions.

Moreover, the crossbow panel with massive crossed dipole radiating elements supports the high power-multichannel FM markets. Also, the panel is ideal for multi-channel operation over the complete FM band of 88 to 108 MHz. The VSWR of 1.1:1 is provided on each operating channel.

With the aim to provide excellent omnidirectional radiation patterns when using four panels per tier. This is around a square or triangular tower. A combination of unequal power division and appropriate phasing between faces also provides a wide range of customized directional patterns.

In addition, a feature of the JFCB screen design is additional strength. This also allows installation and maintenance crews to climb on them. Minimising aerodynamic areas of the panel with round cross section members achieves the strength required.

Weather protection of the dipole feed points is provided by a Balun covered radome and avoids the need for de-icing. This greatly increases reliability while reducing operating costs.

Typical Specifications of Crossbow Panel Circular Polarized FM Antenna

  • Frequency 88-108 MHz.
  • Polarization Circular.
  • VSWR 1.1:1.
  • Power Rating—according to the input connector
    • 1 5/8” for 10 kW
    • 7/8” for 5 kW
    • 7-16 DIN for 3.3 kW Input
  • Impedance 50 ohms.
  • Gain (relative to half wave dipole) 4.9 dB per plane.
  • Lightning Protection DC Grounded.
  • Construction Hot Dipped Galvanized Steel.
  • Ice Protection GRP Pod over dipole feed.

Finally, for more information please call the Jampro team.  Alternatively, please leave a message via the Contact us page and we will respond to you as soon as possible.


JFCB-Literature.pdf (100 downloads)