Sangean HDT-1 Key Pad


       Row 1   Row 2   Row 3   Row  4
column
   1
   2                   POWER
   3    "3"     "6"     "9"
   4
   5    "1"     "4"     "7"
   6    "2"     "5"     "8"     "0"

        cable
      wire pairs
   1    1-10
   2    2-10
   3    3-10
   4    1-9
   5    2-9
   6    3-9
   7    1-8
   8    2-8
   9    3-8
   0    2-7
 PWR    6-8