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.
Product:
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.
Benefits:
* 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)
E-mail: mfcsales@microwavefilter.com
