Racking wireless and proximity

Ryan Lantzy

Junior
Jan 10, 2011
266
0
16
Allegheny Mountains
So I'm adding a few channels (4) of wireless IEMs for a band I frequently work with. Currently, they have several channels of wireless mics which have worked very well for the most part over the last year or so. I've been using the Shure Wireless Workbench to do all of the frequency coordination, and given that most of the work they do is a fairly rural area, problems are far and few between up to this point.

My question is this, if I throw 4 channels of IEM transmitters into the same rack rack with the wireless mic receivers, am I going to have problems with interference? The mics are in two bands, eight in 470-504 and two in 554-590. The IEMs are 656-692. We tried one IEM transmitter out during the last show with no issues, however, I just threw it on top of a rack and plugged it in (several feet from the receivers). WWB 5 says that there shouldn't be any problems and was able to easily generate lots of channel combinations even on the "More Robust" mode. That said, since power is related to the square of distance I'm wondering whether I'll have a problem if the antennas are only a few inches from one another when everything is all up and running.
 
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Re: Racking wireless and proximity

You should be fine with frequency bands that far apart. Keep everything well coordinated and you'll never experience an issue on stage. If you aren't already using splitters/combiners with your units, they will provide a more stable system than the stock whip antennas alone.
 
Re: Racking wireless and proximity

The only issue I can see is that you might desensitize your wireless receivers by having them so close to a strong source. What this will mean in real terms is that you probably won't get the range you would expect from your wireless mics. Having the frequency ranges as far apart as possible helps with this, but even better is to use remote antennas for both systems that are physically separated by a good distance. Good for you for doing frequency coordination - I'm sure this has gone a long ways towards the success you've had so far.