Just to mention that since first HF power on with both of my LimeSDR-s
I am using LNA4HF and most of the time home made antenna split and protector.
So far replaced once MMIC on LNA4HF, all with kind assistance of Adam 9A4QV
/ that particular night my HM protection device was not in line
Any way it is good to spent 20-30 USD on front-end protection of 300++ USD LimeSDR device.