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Dual Beam Retrofit for 3.7 Meter
(12 ft.) Diameter Class Antennas

Specifically Designed for Small 12 ft. Size Antennas

Dual Beam Feed
      AFC's dual beam retrofit kit provides an economical alternative to installing multiple antennas for simultaneous reception of two adjacent 2 degree satellites. To accommodate headends anywhere and various satellite positions, feed separation is continuously variable from 1.9 to 6 degrees of arc.

      AFC's dual beam systems are designed specifically for AFC's PR-12 antenna or may be called out for other manufacturers' type antennas. Based on the theory of overmoded dielectric filled waveguide feeds, users can upgrade their feed to receive high quality 2 degree signals. The two feeds are free of any spurious effects, preserve polarization purity and optimize antenna pattern.

Installation of a new dual beam retrofit upgrade kit requires the replacement of the legs and brackets of the feed support hardware. The retrofit kit comes furnished with all necessary hardware for a durable, weather-tight installation. The retrofit system provides isolation between beams better than 20 dB with a loss of only about 0.25 dB at 2 degrees. Cross-polar discrimination is typically better than 16 dB.


  • Simultaneous receives two 2-degree satellites on one antenna.
  • Antennas may easily be retrofitted for 2-degrees in the field.
  • Feed separation variable from 1.9 to 6 degrees of arc.
  • Available for AFC, Prodeline, Microdyne, Patriot, Satellite Export, Comtech, DH, SA, or other manufacturers' antennas.

Dual Beam Retrofit Gain vs. Boresight Angle Dual Beam Feed Front View Dual Beam Feed Side View

Ordering Information MSF-12 Dual Beam Retrofit Kit

The MSF-12 is a complete assembly equipped to receive simultaneously two satellites. Since the retrofit feeds need to be positioned at the focal point of your antenna, please let us know your antenna focal length or let us help you find it. To save field installation time, we are ready to provide an antenna pointing summary. When you place your order, just let us know your site location coordinates and the satellites you wish to aim at. Our computer program can easily determine antenna elevation, azimuth angles, feed separation and inclination rotation angle just right for your location.

AFC manufactures 3.7, 5 and 7 meter antennas, multi-sat feeds and dual beam retrofits. Antenna pedestal options include high wind mounts. Contact AFC sales for alternatives to fit your needs.

AFC also manufactures, markets and sells worldwide satellite dish antennas, conical horn antennas, radomes, antenna feeds, microwave and waveguide components, ultra low loss waveguide transmission line Tallguide , and custom shelters. Our customers serve the satellite, broadcast, communications, radar, weather and cable industry, defense, government, and government agencies worldwide.

A complete Internet WWW AFC site index may be found in Antennas for Communications (AFC) Home Page Document Summary List.

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Antennas for Communications
2499 SW 60th Ave, Ocala, FL 34474
Telephone (352) 687-4121 Fax (352) 687-1203 E-Mail

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