Parmak Mark 7 (MK-7) Low Impedance Electric Fence Charger, UL Listed, 1 Joule
Basically, Parmak’s Mark 7 is a more powerful version of the Fieldmaster 2 and is capable of powering both baited and unbaited deer fences. So long as one is using a single 12.5 gauge galvanized steel wire with perfect connections as one’s fence, the Mark 7 is capable of charging up to 30 miles of fence. Voltage data: Parmak states that the MK-7 puts out 11,000 volts on an open circuit and is good at handling weeds—so good that a minor (500 ohm) weed burden will only reduce the line voltage to around 7,500 volts, and a heavy weed burden providing a 100-ohm path to the ground will still leave some 4,600 volts on the line. Joule range: The MK-7 is rated by us at approximately 1 joule. Target animals: Besides powering deer fences, the Mark 7 is useful for containing sheep and goats and for repelling many wild animals including javelinas, feral pigs, foxes, coyotes, and wolves. General data: The MK-7 features advanced solid-state circuitry, double fuse protection with built-in lightning arrestors, color coded positive and ground terminals, a digital display that indicates when the electric fence charger and its immediate connections are working properly, and a one-year warranty against defects and lightning damage. The MK-7 must be installed in a clean, dry location protected from the weather. Instructions and mounting screws are included.
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