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White Paper - Wi-Fi HaLow Radio Technology with Trimble SX12 and EM130

Issue link: https://geospatial.trimble.com/en/resources/i/1497632

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Wi-Fi HaLow Radio Technology 17 on High Bandwidth channels using video is not reliable. In this case, it could be possible to get additional range by using Low Bandwidth Channel and turning off the video. If the signal bar shows 2-4 bars but the user experiences radio issues as perceived by a laggy video or slow responsiveness to commands, an external localized source of radio interference could be the reason for radio issue. 2. Look for possible source of interference or environmental effects In case of radio issues, it is important for the user to pay attention to possible sources of localized interference as explained earlier in the white paper. Watch for proximity of Trimble SX12 or Data Collector+EM130 module to any of the following: ● Power transformers ● High power lines and/or substations ● Large mining site ● Cell towers ● Smart utility meters or other similar IoT devices ● Weather station ● Airport or airfield ● Another nearby Trimble SX12+EM130 setup ● Other known 900MHz radios such as UHF base station radios used for GNSS correction When surveying, it's not always possible to move away from sources of interference, but if you notice one of the towers/antennas listed above, try moving further away from it. 3. Change Channels Besides the Auto-Select Channel tool, you can change the Wi-Fi HaLow channel manually. If you perceive laggy video but the signal bars in the application indicate a strong signal, you may suspect a radio interference issue. In this case, you can try out different channels and from trial and error take note if a particular channel shows significant improvement. 4. Reduce the zoom level or Turn off Video When the video is enabled and zoom level is set to one of the levels 5 through 8, this usually demands the highest throughput from the radio link. If you experience radio issues as perceived by laggy video, if possible you can change the zoom level to 1 or turn off the video and this should improve the user experience by reducing the data traffic demand on the link. 5. Switch to Standard Wi-Fi Sometimes there could be broadband sources of radio frequency noise in an environment causing interference issues for Wi-Fi HaLow radio such that the Auto-Select Channel tool or changing channels doesn't provide a sufficiently improved experience.

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