TheHollyland COSMO 400 allows you to transmit up to a 1080p60, 4:2:2 uncompressed HDMI or SDI signal up to 400' line-of-sight with <1 ms latency. 400' line-of-sight transmission with <1 ms latency. This is a great condition kit of transmitter + Receiver, and I have a more complete kit (including hard case and cables) up for sale as well.
eBay