filters may be needed for simultaneous operation.
C.
Designer must identify Government furnished
wire lines for use as DTM with remote base station
if GF wire lines are to be used and available.
D.
The frequency assignment must be coordinated
from the installation Director of Information
Management.
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All RFCE not shown as Government furnished shall be furnished and installed
by the Contractor. Contractor furnished RFCE shall provide data
communication operation.
2.2
WIRELESS ETHERNET BRIDGE
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NOTE: The frequency assignment must be coordinated
with the installation Director of Information
Management, Operation range must be specified, and
operating conditions must be specified. The
sections below show typical operating specifications
but can be adjusted to increase distance, frequency,
and operating conditions.
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Bridges shall be of solid state design and shall use a license-free
frequency band. The bridge shall be compliant with FCC Part 15 code.
Bridges can be a single integrated unit, or it may consist of separate
transmitter and receiver modules with a common power supply, amplifier and
control unit. The bridge may also utilize an integrated antenna or an
external antenna. The bridges shall be used to extend a connection for
remote locations to allow wireless data transmission of the Ethernet.
2.2.1
Ethernet Bridge Requirements
The Ethernet bridge shall operate on a license-free frequency band of [2.4]
[5] GHz. Frequency stability shall be within 0.00025 percent over the
operating temperature range. The bridge shall have a minimum throughput of
8 Mbps. The bridge must have a minimum transmission power of +20 dBm. The
bridge shall have a digital interface that utilizes a RJ-45 connector at a
minimum of 10BaseTx transmission speed. The bridge power consumption must
be less than 60 watts. There must be bi-colored or separate indicator
lights for power and transmitting status. A low loss type "N" connector
must be used to connect the bridge to the antenna. All interconnecting
cables among station elements must be provided with bridge. The bridge
shall have a minimum broadcast range of [1, 5, 10, 50] miles to allow
connection between the point-to-point bridges. The bridges shall be used
to extend a connection for remote locations to allow wireless data
transmission of the Ethernet.
2.2.2
Stand-by Ethernet Bridge
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NOTE: A stand-by bridge and hot stand-by protection
switch may be required for critical areas.
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SECTION 16798A
Page 11
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