Report "I have a problem with dead-zones while using at a show. I am a mobile dj and do many weddings. I was told that my vhf wireless micrphones were not suitable for this type of business and I needed to purchase a uhf wireless system. I purchased the Vocopro5805 and had more drops than the vhf mics. I do not understand this and need some help figuring out how to best tune the MHz on these mics"