[MRCA] grc106 dc power cable looks like coax

[comcast]

folks 
anyone know what the spec or make of the coax type dc power cable that is used with the grc106 dc feeds?. the center conductor is #10 or #8 and the stranding surrounding the insulation over the center   conductor is the same. looks like i need  about 2 15 ft runs to use in my m38a1

thanks Jeff N2IA
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