If you connect your phone or tablet to your home wifi network and wander around the surrounding streets you will find that data throughout (and perhaps even whether you have a connection of not) will likely vary greatly. Even if at a similar distance from your router, and to the extent it could be maintained, within line of sight to your access point.
Your phantom control signal, and to the extent you aren't running a channel hack, the video downlink, both share the same 13 allocated channels that are allocated to Wifi, cordless phones and other equipment approved to operate in this part of the RF spectrum.
Your AC performs similarly to wifi (and other) equipment in that it will work with other devices to share available channels. Performance and quality of the connection will naturally decrease with larger numbers of devices operating close by, it may even fail depending on congestion.