WTR-670 (DISCONTINUED) Date and Time Event date: Location Event Types Products UHF band, single-channel wireless intercom beltpack UHF band: operate in select frequency bands between 518-686MHz Single-channel Extremely light, durable cast magnesium Durable, detachable antennas are secured to the beltpack via threaded post connectors Low-profile volume control Robust, distinguishable momentary latch talk button.