Shure UA840UA 840-UA Antenna Distribution option-title-330w 2-Channel you can set the speed

you can set the speed to ensure a constant zoom speed

(1) Party-line link button

Shure PA821A Eight Port PSM Antenna Combiner

support for a flexible range of audio feeds from discrete AES to MADI and embedded SDI audio

Scaling: Supported in 2K/HD/SD formats Zoom in and out

Shure UA840UA 840-UA Antenna Distribution option-title-330w 2-Channel you can set the speedShure UA840UA 840 UA Antenna Distribution The Shure Model UA840 is an amplified, UHF Antenna Distribution System designed to expand a wireless microphone system by splitting one pair of antennas to multiple receivers. It also amplifies RF signals to compensate for insertion loss due to splitting signal power to multiple output ports. Each UA840 allows up to four receivers to use the same antennas. A CASCADE port allows connections to a fifth receiver