K3c mining

1. K2P, K3 and the current k3c have all been tested. My family has an attic, and the router, K2P and K3 placed downstairs can detect the signal in the corner of the attic, but the k3c is the best signal at present. It seems that the 6dp antenna is still a good signal guarantee. If the pursuit of signal effect, it must be k3c is the best, especially when 2.4G and 5g are used at the same time, k3c is the best, K3 is not practical. In my environment, K2P needs to open 5g to have good practical effect, k3c is completely competent. It's worth recommending!