the ccecpsco has two repeaters on "mackinaw" to provide communications coverage throughout the straits of mackinac. these repeaters, operating under the call-sign w8agb to match the ship's wagb-83 designation, are on a radio frequency of 145.110 mhz with 103.5 hz pl tone and 444.375 mhz with 107.2 hz pl tone. the organization is also actively assisting the museum with restoration and operation of various communications, navigation, and power systems. included with the radios on board the ship are two sunair rt-9000 hf transceivers with matching antenna couplers and vertical antennas. scheduled for spring 2010 is the installation of a third rt-9000 paired with an lpa-9600 solid-state kilowatt amplifier and cu-9100 kilowatt autotuner along with a sunair f-9800 automatic pre/post filter for each radio to permit simultaneous operation of all three stations, and sunair rcu-9310 remote control panels.