Radio Antennas; Audio Wiring - Monroe One-Net SE User Manual

RADIO ANTENNAS

If the EAS device is equipped with internal radio receivers, there will be industry
standard F-type connectors for each receiver (up to three total). Review your states'
Emergency Alert System Plan for the appropriate monitoring assignments; these
assignments will assist in determining the proper antenna for the frequencies that
need to be monitored.
The EAS device's internal radios are designed to receive the following frequencies:
Band
FM
NOAA
AM
For proper reception, use a good quality, shielded RG6 coaxial cable and connectors.
The quality of the incoming audio signal will affect the operation of the audio decoders,
and the quality of the forwarded audio messages.

AUDIO WIRING

The One-Net and DASDEC platforms have two types of analog audio: EAS Audio and
Program Audio. EAS Audio Inputs feed the internal EAS decoders for processing. Only
signals with EAS information should be directed to these inputs. EAS Audio Outputs
only send EAS decoded audio. Program Audio connections are used for internal
switching of program audio.
Analog EAS Audio inputs are intended for line-level audio input from external radio
receivers and/or other EAS devices. These audio signals are fed to internal decoders for
EAS processing. There are numerous ways to configure the number of incoming audio
sources for decoding. To establish the best way to wire/connect the audio sources, it is
important to first understand the origin of the incoming audio signals.
See the back panel graphic on the next page for references to specific components.
• Each audio line connector (3.5mm TRS) supports two EAS decoders. The left side of
the input is decoded separately from the right side.
The Main Audio – Line 1 & 2 inputs (10) are disabled if internal radio receivers are
•
being used for Main Audio L1 & L2.
• When Radio 3 is in use, the Auxiliary Audio 4 (terminal block) input (1) is utilized
for a line-level input (Auxiliary Audio 1 R2).
• For configurations where only two internal radios are being used (Main Audio L1
and R1), utilize the Auxiliary Audio – Line Input 3 & 4 (8) for line-level audio.
• The EAS Audio Out (9) can be used to monitor radio receivers, selectively play out
stored EAS alert messages, and play out active EAS alert messages. This output is
intended for audio monitoring, feeding audio to other EAS devices, and feeding
audio to the optional MPEG card.
One-Net/DASDEC User Manual
Frequencies
87.9 - 107.9 MHz
162.440 - 162.550 MHz
530 - 1700 KHz
Note
The FCC provides a
listing of each state's
EAS Plan, along with
contact information
for individual
state emergency
communications
personnel, at
www.fcc.gov/public-
safety-and-homeland-
security/policy-and-
licensing-division/
alerting/general/state-
eas-plans.
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