User's Manual

MDR2400-SR, MDR5800-SR and Orion 5825-SR
Issue 10 Page 17
The channel spacing is based on the transmit bandwidth, either 3 MHz, 6 MHz, or 10
MHz, software selectable. Different bandwidths can be selected dependent on the
optimum link performance; required system sensitivity versus data transfer rate.
Only channel frequencies that are FCC compliant can be selected through the
configuration software. The channel frequency ranges are programmed into the radio
firmware and cannot be adjusted by the user.
The radios were tested and approved for FCC compliance with the frequency ranges
below, see Figure 4.
Low band Outdoor Unit:
Modulation Type Lowest Center Freq.
(MHz)
Highest Center Freq.
(MHz)
8464kbps / 16-QAM
5731 5774
16928 kbps / 16-QAM
5732 5773
25392 kbps / 16-QAM
5734 5771
High band Outdoor Unit:
Modulation Type Lowest Center Freq.
(MHz)
Highest Center Freq.
(MHz)
8464kbps / 16-QAM
5801 5844
16928 kbps / 16-QAM
5802 5843
25392 kbps / 16-QAM
5804 5841
NOTE 1 Both Outdoor Units in a link must be set to the same frequency channel plan
(i.e. A, B, C or D) and modulator type. Also note that the frequencies differ for different
transmit bandwidths, i.e. the frequency of channel A changes according to the transmit
bandwidth.
NOTE 2 Figure 4 reflects all the frequency bands that could be obtained with the
ORION5850 OU. Pre-programmed frequency ranges in the radio firmware prevent the
user from selecting transmission options that will not meet FCC requirements.
Frequency [MHz]
5731 5774 5801 5844
ABCABC
Low Transmit Band High Transmit Band
Figure 4. Orion 5850 Frequency channel plans A, B and C. Refer to NOTE 2 above with
regards to FCC standards compliance of the different band plans.