In Broadcast - January 2021 - 25

25

www.inbroadcast.com | Vol: 11 - Issue 1 | January 2021

Dielectric Delivers Broadband Antenna
and RF System to Puerto Rico
D

ielectric's
global
business
continues to expand through key
customer wins, with the CALA region
representing an especially strong
region of activity for FM radio business.
Educational Media Foundation (EMF)
has added to Dielectric's CALA business
momentum with the installation of a
listener-funded Dielectric DCR-M for
WJKL-FM, a non-commercial station
serving the island of Puerto Rico.
EMF worked closely with Dielectric
on a broadband antenna design to
support both WJKL on 105.7 FM and a
second station (104.7 FM) in the future.
The center-fed DCR-M accommodates
both frequencies (with 1 MHz
separation) through a special reduced
bay-spacing design that eliminates the
need for future field tuning. EMF also
added a new, specially designed twostation branch combiner to serve both
transmission frequencies, and prevent
intermodulation issues from signal
mixing inside the transmitters.
Side-mounted to a mountaintop
tower with a center of radiation at

118 feet above ground level
(1787 feet above sea level),
the DCR-M was specified
to withstand the often
stormy weather elements
of Puerto Rico, which are
amplified during hurricane
season. The project was in
fact delayed due to several
harsh
storms
including
Hurricane Maria in 2017,
which caused widespread
devastation to the island. The project
was revived once power was returned
to the remote site and the general
infrastructure was restored.
" Dielectric's robust antenna design
meets the weight and wind-load
specifications of our tower while
building in the appropriate protections
for continued operation in our
harshest weather conditions, " said Kim
Allison, director of site development,
EMF/WJKL-FM. " This was of high
importance considering the remote
tower location. We were also very
pleased at Dielectric's collaborative

InForm

from the DCR-M, through a robust
inter-bay feed system that optimizes
signal coverage without directing
radiation downward from
the tower.
Dielectric Vice President
and
General
Manager
Keith Pelletier notes that
Dielectric worked closely
with EMF, Sabre, and local
contractors in Puerto Rico
to ensure that timelines
were met and logistics were
well-coordinated. Everything
was shipped in a single
EMF WJKL Dielectric FM Antenna & Bays container to reduce costs,
approach with our other partners, with Sabre designing the stand-off pole
which ultimately delivered the antenna in short, modular sections to fit cleanly
system required to accommodate a alongside Dielectric's antenna.
second FM station. "
  " This project was a labor of love for
Dielectric worked closely with Dielectric considering the unforeseen
Sabre to develop a custom mounting delays and challenges that EMF
system that could support the unique faced on the road to installation, "
bay-spacing design. This included a said Pelletier. " We are grateful for
standoff pole for the tapered tower the opportunity to support EMF and
architecture, and a bracket design its mission to bring Christian radio
that eliminated complex anti-rotation programming to the audiences
elements for the antenna bays. throughout Puerto Rico. "
Dielectric also added its " funky elbow "
design to reduce ground radiation


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In Broadcast - January 2021

Table of Contents for the Digital Edition of In Broadcast - January 2021

Contents
In Broadcast - January 2021 - Intro
In Broadcast - January 2021 - Cover1
In Broadcast - January 2021 - Cover2
In Broadcast - January 2021 - Contents
In Broadcast - January 2021 - 4
In Broadcast - January 2021 - 5
In Broadcast - January 2021 - 6
In Broadcast - January 2021 - 7
In Broadcast - January 2021 - 8
In Broadcast - January 2021 - 9
In Broadcast - January 2021 - 10
In Broadcast - January 2021 - 11
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In Broadcast - January 2021 - 14
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In Broadcast - January 2021 - 53
In Broadcast - January 2021 - 54
In Broadcast - January 2021 - 55
In Broadcast - January 2021 - Cover3
In Broadcast - January 2021 - Cover4
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