swangletang wrote: ↑Fri Mar 28, 2025 1:17 pm
Have you had issues with interference? Have you done this at a gig with many ppl in attendance?
I usually use a different (non-battery-operated) transmitter, Chauvet D-Fi Hub, which has a little rubber duck antenna and has a higher transmitter power rating than little battery powered D-Fi XLR Tx transmitters I linked earlier. (RF output of 18.5 dBm for the D-Fi Hub vs 12.72 dBm for the D-Fi XLR Tx which translates to a maximum range of 656ft vs 165ft respectively.)
Using the D-Fi Hub as transmitter, I very rarely have had interference issues. When it does happen, it typically manifests itself with furthest receivers intermittently missing the signal for a second or two. Problems are usually caused by: A.) Being in a dense city with a very saturated 2.4GHz band and/or B.) A receiver was located within about 10ft of a WiFi hotspot, wireless security camera, or similar 2.4GHz device, and/or C.) The receiver was damaged.
For your reference, I mostly do weddings at various locations, both indoors and outdoors, rural and urban, all over the Mid-Atlantic US region. Most events that I do have 50 - 400 people, and I always do wireless DMX with anywhere from 60 - 100 wireless fixtures. Each fixture in my system has its own wireless receiver built-in or added on with D-Fi XLR Rx, and the furthest fixture is usually no more than 125 feet away from the transmitter, though I've gone as far as 300 feet. I've used the Chauvet D-Fi system about 500 times now, and have had no problems with 99% of the events I've done.
0-50 feet away from transmitter: Never had a problem with any receiver within this distance at any location.
50-75 feet away from transmitter: Only once had an issue with fixtures in this distance. Heavy interference from a bunch of 2.4GHz security cameras positioned near many of my fixtures caused a few uplights at 50-75ft to miss the signal intermittently. Improved with channel change.
75-125 feet away from transmitter: I can think of a couple places and isolated instances where the 2.4GHz band was so saturated that I couldn't get fixtures at this distance to work reliably, still uncommon.
125+ feet away from transmitter: This is my usual "safe maximum distance". In my experience, it is more common to have issues when operating in severe RF environments beyond this distance.
300 feet away from transmitter: I have had success under ideal conditions at this distance.
I typically use channels 14, 15, and 16 for wireless DMX because those channels are not used for WiFi in the United States, so there's less chance of interference from WiFi. For best results, keep the transmitters and receivers away from metal and raise the transmitters and receivers as high as possible to keep a direct line of sight between Tx and Rx if practical.
My advice would be to get a pair and do a test! They're not too expensive. Take one pair and connect it to one unimportant, standalone fixture at a gig and see what happens! If you're worried about dropouts on daisy chains, get a few receivers and do several separate daisy chains so that, if one chain drops out, your show isn't completely ruined.