Contemporary Research QMOD-SDI Integration Guide User Manual
Page 11
Contemporary Research
11
QMOD-HD Integration
When the channels for over-the-air TV were created, the FCC had to carve out gaps to avoid
conflicts with frequencies that were already assigned. As a result, as you move from Channel 2
upwards, the frequencies jump around a bit. As the easy architecture for creating your own HD
cable system is to stay in the low frequencies, it’s important to keep this in mind.
Channel
Freq
Channel
Freq
Channel
Freq
Channel
Freq
Channel
Freq
2
57.0
29
255.0
61
447.0
93
639.0
130
831.0
3
63.0
30
261.0
62
453.0
94
645.0
131
837.0
4
69.0
31
267.0
63
459.0
95
651.0
132
843.0
5
79.0
32
273.0
64
465.0
96
657.0
133
849.0
6
85.0
33
279.0
65
471.0
97
663.0
134
855.0
95
93.0
34
285.0
66
477.0
98
669.0
135
861.0
96
99.0
35
291.0
67
483.0
99
675.0
97
105.0
36
297.0
68
489.0
100
681.0
98
111.0
37
303.0
69
495.0
101
687.0
99
117.0
38
309.0
70
501.0
102
693.0
14
123.0
39
315.0
71
507.0
103
699.0
15
129.0
40
321.0
72
513.0
104
705.0
16
135.0
41
327.0
73
519.0
105
711.0
17
141.0
42
333.0
74
525.0
106
717.0
18
147.0
43
339.0
75
531.0
107
723.0
19
153.0
44
345.0
76
537.0
108
729.0
20
159.0
45
351.0
77
543.0
109
735.0
21
165.0
46
357.0
78
549.0
110
741.0
22
171.0
47
363.0
79
555.0
111
747.0
7
177.0
48
369.0
80
561.0
112
753.0
8
183.0
49
375.0
81
567.0
113
759.0
9
189.0
50
381.0
82
573.0
114
765.0
10
195.0
51
387.0
83
579.0
115
771.0
11
201.0
52
393.0
84
585.0
116
777.0
12
207.0
53
399.0
85
591.0
117
783.0
13
213.0
54
405.0
86
597.0
118
789.0
23
219.0
55
411.0
87
603.0
119
795.0
24
225.0
56
417.0
88
609.0
120
801.0
25
231.0
57
423.0
89
615.0
121
807.0
26
237.0
58
429.0
90
621.0
122
813.0
27
243.0
59
435.0
91
627.0
123
819.0
28
249.0
60
441.0
92
633.0
124
825.0
Frequencies are shown at the center-channel values. Digital channels are measured at the center;
analog channels are measured close to the start of each 6 MHz channel, 1.75 MHz from the center
Channels 99-99 are in the FM band, there may be interference if a FM station antenna is nearby