User's Manual

3. Pre-Installation Procedures 3-5
© 2012 Moseley, Inc. All Rights Reserved. 602-16620-01, Rev. A
3.3 Frequency Plan Determination
When configuring EVENT 5800 units in a point-to-point or consecutive point
configuration, careful engineering of the frequency plans and antenna locations should be
performed in order to minimize potential interference between nearby radios. Nearby
radios should operate on different frequencies, transmitting in the same band (high side
or low side). Local frequency coordination efforts are a requirement for broadcast
auxiliary service applications. When designing multi-radio configurations, antenna size,
antenna polarization, and antenna location are critical.
The frequency plan is selected based on the band being used. Data rate and capacity is
selected based on expected link conditions or fixed based on application. In a high
interference environment or with lower gain antennas, higher bandwidth, more robust
modulation formats must be employed. The available frequency plans are shown in the
following illustrations based on application frequency.
The channel assignments shown in the figures correspond to the channel numbers
assigned via the Web Interface or SNMP.
A1
30MHz
B1
30MHz
5.8 GHz
1-Channel Plan, 30 MHz
25 MHz T/R
Guard Band
5750 5825 5850580057755725
A1
25MHz
A2
25MHz
5.8 GHz
2-Channel Plan, 25 MHz
25 MHz T/R
Guard Band
5737 5812
5850580057755725
75MHz T/R
B1
25MHz
B2
25MHz
5762 5837
75MHz T/R
75MHz T/R
A1
16.7MHz
A2
16.7MHz
5.8 GHz
3-Channel Plan, 16.7 MHz
25 MHz T/R
Guard Band
5733
5850
58005775
5725
5750
75MHz T/R
A3
16.7MHz
5766
B1
16.7MHz
B2
16.7MHz
B3
16.7MHz
5808 5825 5841
75MHz T/R
75MHz T/R
Figure 3-1. 5.8 GHz Frequency Plan