The RAK7240 device is experiencing noise

The RAK7240 device is experiencing signal interference. What product can filter out the signal interference?
I look forward to product advice from experts.

Hi @anh.nguyen ,

It is not always the case but if it is installed on the same tower used by cellular base station, it is possible scenarios that there are crosstalk/interference. As far as i know, we already supported customer having this issue by using cavity filter. Please send the details on [email protected] so our team can have a look and give advise.

PS, our new outdoor full duplex gateway has built-in cavity filter in it.

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What’s that cavity filter ? Do you have a link to where I can find it?