How many wireless transceivers?
We're a small church, only ever breaking 100 in the congregation for special occasions.
For our live music, we're aware that the cheaper wireless solutions (for guitars, or IEMs, etc) use the 2.4GHz wireless band, and that space is shared by 2.4GHz wifi, and also the microwave in the kitchen.
Is there a general rule for how many pairs can be used before the risk of dropout starts to become a problem, or are there any other special considerations I've missed?