Microwave Filter Company, Inc.
International Calls: (315) 438-4700
Toll Free: (800) 448-1666

"Committed to Excellence" Since 1967

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STL (7 GHz) / ISM (5.8 GHz) Diplexer

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Introducing the model 16940 STL/ISM diplexer designed to optimize the broadcaster’s auxiliary service (STL) operations.

Application Notes:
     Due to the inherently obscure locations of many (7 GHz) STL feeds (e.g. – mountaintop), broadcasters typically operate their STL equipment via remote control from the studio. However, newer generation remote-controlled STL equipment requires high-speed network connectivity (e.g. – Ethernet) for efficient operation. While a high-speed wired network connection (LAN) is impractical to reach those far-off STL links, a wireless network connection (ISM) is ideal for such an application.

     More specifically, a 5.8 GHz ISM can also operate through the same size (WR137) waveguide components and antenna dish typically used on a 7 GHz STL feed - due to the relatively-close proximity of frequencies. This “commonality” means that dual band operations (ISM & STL) can share one antenna to and from the studio - provided there is adequate isolation between the 5.8 GHz equipment and the 7 GHz equipment. Consequently, a diplexer provides this dual band (mutual) isolation.

     MFC’s model 16940 diplexer provides a low band of (5.725-5.850) GHz for the ISM path and a high band of (6.875-7.125) GHz for the STL path with superior isolation (> 50 dB) between the two bands.

     The common port has a CPR137F flange, the low band (ISM) port has an N-female connector, while the high band (STL) port has a CMR137 flange. Alternate configurations are available upon request.

     * Optimize Performance - No need to “patch” the ISM through the STL antenna via “lossy” circulator/filter arrays.

     * Save Revenue - Eliminates the need for a separate ISM antenna system.

For more information contact our Sales Dept.
Toll-Free (800-448-1666)
International (315) 438-4700
Fax (315-463-1467)

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Toll Free: (800) 448-1666
International: (315) 438-4700
Fax: (315) 463-1467

6743 Kinne Street
East Syracuse, New York 13057
Website: www.microwavefilter.com
Email: mfcsales@microwavefilter.com