Flex		Flex		Coax
Cable		Cable		Cable
Channel		Cin:Apse	Bulkhead
   #		pin #		pin #		Type
------------------------------------------------------
11		9		15		signal
12		4		7		signal
13		8		13		signal
14		7		11		signal
15		1		1		signal
16		2		3		signal
17		5		9		signal
18		3		5		signal
		6				bias
21		18		31		signal
22		13		23		signal
23		17		29		signal
24		16		27		signal
25		10		17		signal
26		11		19		signal
27		14		25		signal
28		12		21		signal
		15				bias
31		27		15		signal
32		22		7		signal
33		26		13		signal
34		25		11		signal
35		19		1		signal
36		20		3		signal
37		23		9		signal
38		21		5		signal
		24				bias
41		36		31		signal
42		31		23		signal
43		35		29		signal
44		34		27		signal
45		28		17		signal
46		29		19		signal
47		32		25		signal
48		30		21		signal
		33				bias
51		45		15		signal
52		40		7		signal
53		44		13		signal
54		43		11		signal
55		37		1		signal
56		38		3		signal
57		41		9		signal
58		39		5		signal
		42				bias
61		54		31		signal
62		49		23		signal
63		53		29		signal
64		52		27		signal
65		46		17		signal
66		47		19		signal
67		50		25		signal
68		48		21		signal
		51				bias
71		63		15		signal
72		58		7		signal
73		62		13		signal
74		61		11		signal
75		55		1		signal
76		56		3		signal
77		59		9		signal
78		57		5		signal
		60				bias
81		72		31		signal
82		67		23		signal
83		71		29		signal
84		70		27		signal
85		64		17		signal
86		65		19		signal
87		68		25		signal
88		66		21		signal
		69				bias

Note that the bulkhead connector even numbered pins go through
the ground circuit to ground.