The Pros and Cons of IG增加觀看次數
http://feliximcz485.image-perth.org/the-advanced-guide-to-ig-zeng-jia-guan-kan-ci-shu
If extra care is needed for the signal, exterior electric power can be used for your HDMI repeater. That is a good idea because many HDMI sources basically dont output the power necessary to do a good job of repeating