Harris RF-7800W-OU49 series, Installation & Operation Manual, Page: 46 / 87

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RF-7800W
SYSTEM ADMINISTRATION AND CONFIGURATION
R
3.8.3.2 Statistics
The actual transmit power depends on a number of things, including Automatic Transmit Power Control (ATPC)
settings other dynamic link conditions. The current transmit power and other related statistics are logged.
3.8.4 Frequency
The frequency settings are described below.
3.8.4.1 Configuration
The frequency of operation can be configured at 0.5 MHz intervals anywhere within the radio's operating band. The
configured frequency is limited to half of the configured channel width away from the low and high ends of the
operating band. Depending on DFS or EIM settings, the actual operating frequency might differ from the configured
operating frequency.
3.8.4.2 Auto-Scan
Radios configured as Subscriber Stations have the ability to auto-scan frequency and channel width if a Sector
Controller is not detected within a period of time. This allows SS radios to automatically locate a valid SC without
prior knowledge of the SC operating frequency. It can also be helpful when an SS is configured on multiple SCs and
one of the SC is interfered with or is taken down for maintenance.
3.8.4.3 Frequency Lists
The operating frequency band is sometimes wider than necessary for a given installation. Frequency lists allow for
the radio to be further restricted from known interference or licensed frequency bands. The Auto-Scan, DFS and
EIM features respect these frequency band limits.
3.8.5 Channel Width
The radio supports a number of different channel widths from 5 MHz to 40 MHz. Narrower channel widths allow
for greater range due to improved receiver sensitivity, but the trade-off is lower throughput. Likewise, wider channel
widths allow for higher throughput at the cost of link range. Some situations require restricting the channel widths
due to co-site interference.
3.8.6 Link Distance
The radio supports restricting the maximum link distance if the installation is fixed-site in order to improve latency.
The default value for this is 50 km (31 miles) and must be adjusted to be greater than the actual link distance or link
performance will suffer.
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