[FS#458] WNDR3700v4 5G Wireless Band B not working

[LEDE Bugs]

The following task has a new comment added:

FS#458 - WNDR3700v4 5G Wireless Band B not working
User who did this - Mauro Mozzarelli (ezplanet)

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Please refer to the Ofcom official document for GB 5G band for indoor frequencies.
The same issue does not occur on BT Home Hub 5 type A.

There is no other signal on Band B frequencies in the vicinity. I have also Ham Radio license, thus I have the equipment to measure.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=458#comment1558