After way too many hours doing research, this looks like a wireless option for around 200 bucks... J-Tech Digital 1X2 Wireless HDMI Extender 200ft Dual Antenna Supporting Full HD 1080p with HDMI Loop Output Operation Channel Change IR Passthrough [JTECH-WEX200]
DISH satellite receiver above living room television. the JTech transmitter is between the receiver and the living room television, in and out signal by hdmi cable. Meanwhile, the JTech receiver is in the bedroom with a single hdmi cable hooked into that television. JTech also has ir interface, so should be able to change channels from bedroom. Yes, same channel on both televisions...