How to set them up when multiple sets of MARS 400S are used at the same location? Hollyland Tech July 20, 2021 09:59 Updated Up to three sets can be used in the same location Choose different frequency channels with the number difference between each two channels bigger than 2 Place each RX at least 0.5m away from the other Place all RX 1.7m above the ground Related articles why the audio and video are not synchronized？ Can we use mushroom antenna on the MARS 400S ? How to avoid the Fan noise? How to set them up when multiple sets of MARS 400S Pro are used at the same location? what kinds of MARS series products support 1 transmitters to 2 receiver? Comments 0 comments Article is closed for comments.