The WM Watertight Belt-Pack Transmitter with Lavalier Mic from Lectrosonics is designed for wet or dusty environments. It features an O-ring sealed battery compartment and input jack, a compression sealed antenna port, and a gasket sealed control panel and back cover. It can be used when paired with a wireless receiver for capturing audio in broadcast TV, ENG (Electronic Field Productions), and EFP (Electronic Field Production) applications, and more.
Dual AA batteries provide twice the operating time of earlier watertight transmitter designs and the larger membrane switches and control panel have a highly visible backlit LCD, which enhances the user interface. In addition, there are 50, 100, or 200 mW selectable-output power switches to maximize battery life and operating range.
Some other features include servo bias input circuitry with selectable voltage for compatibility with other microphones, and programmable compatibility mode for use with a wide variety of different receivers. The transmitter is enclosed in a machined-aluminum corrosion resistant housing and includes a Lectrosonics M152/WP omnidirectional lavalier mic, a belt clip, an O-Ring kit, and two AA lithium batteries.
Servo Bias Input
Digital Hybrid Wireless Technology
Digital Hybrid systems overcome channel noise by digitally encoding the audio in the transmitter and decoding it in the receiver, yet still sending the encoded information via an analog FM wireless link. This proprietary algorithm is not a digital implementation of an analog compander but a technique that can be accomplished only in the digital domain, even though the inputs and outputs are analog
Low Frequency Roll-Off
Excessive low frequency content can drive the transmitter into limiting, or in the case of high output sound systems, it can even cause damage to loudspeaker systems. The roll-off is normally adjusted by ear while listening as the system is operating