9th
performance. For example, for a link (8MHz channel) with a signal strength of at least –75dBm, a TX rate of 16-QAM 3/4
FEC is recommended. Setting to the highest rate with a poor link may result in reduced performance.
3.2. Channel Bandwidth
（
Default
：
4Mhz
）
:
Select the channel bandwidth from the list. Refer to the specifications to see
the relationship and performance between channel band, width,throughput
and sensitivity.Generally a larger channel has greater throughput, at the cost of
sensitivity, while a smaller channel tends to be more robust, but at the cost of
throughput.
3.3. Channel-Frequency
（
Default
：
2479Mhz
）
:
2402 - 2482 (1MHz BW, CH 1-81)
2402 - 2482 (2MHz BW, CH 1-81)
2405 - 2479 (4MHz BW, CH 4-78)
2407 - 2477 (8MHz BW, CH 6-76)
3.4. Wireless Distance
（
Default
：
10km
）
:
The Wireless Distance parameter allows a user to set the expected distance the
wireless signal needs to travel. The TDD-COFDM sets various internal timeouts to
account for this travel time. Longer distances will require a higher setting, and
shorter distances may perform better if the setting is reduced.