The WT-MK2 is a radio transceiver that, when connected to a four-wire hard-wire communication intercom, will provide full duplex communications between the tender and the diver(s). The manufacturer of the full-duplex radios claims a maximum range of ¼ mile. However, we have found that environmental (e.g., weather) conditions dramatically affect the range. We estimate a nominal range of between 75 yards and ¼ mile.
The unit comes standard with 4 AA NiCad rechargeable batteries and a battery charger. With freshly charged batteries, the WT-MK2 and Tender Unit will operate for approximately 5 hours.