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SmartSDR for Mac SmartLink FT8

Hi,
I am operating remotely with my Flex 6400M and SmartSDR for Mac, using SmartLink connection and mode FT8. When I transmit there are some random spikes on my TX. I have no other program running. I believe it's some kind of interference on the audio but I don't know if it is related to my MacBook Pro or the Flex itself.
See picture attached.
Thanks
Paulo
Comments
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The only way to tell would be to listen to your transmitted signal. Put the radio into Full Duplex mode and listen on a 2nd receiver at the same time.
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Thanks Mike.
I found that it is somewhat related to my Multi-port USB-C Hub. When using WiFi I don't have the interference. When I plug my USB-C Hub and use an Ethernet connection the interference shows up.
73 Paulo
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I think I'll need a galvanic isolator.
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