Are the ports on the Channel Master Ultra Mini 4 (CM3414) power passing? I want to use an IR over Coax adapter to control my satellite receiver in a different room. It requires that I pass DC through the coax.

The ports on the Channel Master Ultra Mini 4 (CM3414) are not power passing.  However, an option would be to use an Ultra Mini 1 (CM3410), one port distribution amplifier, and an external power passing 4-way splitter.  This would have the same gain as using a Ultra Mini 4 (CM3414) since it has an internal 4-way splitter after the amplifier. 

Please see the diagrams link attached below to help you understand how to connect a preamp/distribution amp in your antenna system.    

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