Circular Polarization FM Transmitter Packages

Complete Packages Ready To Go

All our circular polarization FM transmitter packages include everything in the radio side of things to get your station broadcasting. Circular polarization improves reception in cities between commercial buildings. We don't include the studio equipment and the mast or tower, you need to provide these. All these circular polarization FM transmitter packages include the FM stereo coder and audio processing / limiting to ensure your FM deviation stays within the limits specified by the FCC, the EU or the regulator in your country. All the equipment complies with the technical requirements of the EU, ETSI and FCC.

125W ERP (6 to 17 Miles Range)

125w-250werp-circular-polarization-fm-transmitter-package

  • 100W Stereo Transmitter with Audio Processing
  • 2 Way Stacked Circular Mixed Antennas
  • 20mt/66ft LMR400 Antenna Cable

250W ERP (8 to 24 Miles Range)

250w-500w-erp-circular-polarization-fm-transmitter-package

  • 100W Stereo Transmitter with Audio Processing
  • 4 Way Stacked Circular Mixed Antennas
  • 20mt/66ft LMR400 Antenna Cable

250W ERP (8 To 24 Miles Range)

125w-250werp-circular-polarization-fm-transmitter-package

  • 200W Stereo Transmitter with Audio Processing
  • 2 Way Stacked Circular Mixed Antennas
  • 20mt/66ft LMR400 Antenna Cable

500W ERP (11 to 33 Miles Range)

250w-500w-erp-circular-polarization-fm-transmitter-package

  • 200W Stereo Transmitter with Audio Processing
  • 4 Way Stacked Circular Mixed Antennas
  • 20mt/66ft LMR400 Antenna Cable

Any Questions For Us?

Circular Polarization FM Transmitters, Why?

Back in November 20, 1989 the licensee Ozark Broadcasting Corporation of station WOAB- FM in Ozark Alabama filed a petition with the FCC requesting an amendment to Part 73 of its rules to permit commercial FM stations to operate with vertical polarization only, the request was rejected.

The FCC responded by saying in general vertically polarized signals (in the FM band) do not propagate as far as horizontally polarized signals. The vertical signals are more prone to reflection and scatter which results in multipath interference. The reason for transmitting a vertically polarized signal in addition to a horizontally polarized signal is to attempt to improve reception in cities by using the reflective property of the vertical component to fill in "shadows"created by commercial buildings. The vertical signal supplements the horizontal signal.

Wikipedia have a nice explantion of the theory of circular polarization along with some nice animated graphics at https://en.wikipedia.org/wiki/Circular_polarization