summaryrefslogtreecommitdiff
path: root/CommLinkBudgetLV2ATV30Jan2004.mdwn
blob: e54178fa8b0fbf7dc9804a6d2b3078ad5e4fbb70 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
## <a name="ATV link budget at 10 miles"></a> ATV link budget at 10 miles

### <a name="Worst case &lt;em&gt;(In the null of the"></a><a name="Worst case _(In the null of the "></a> Worst case \_(In the null of the CPA)

<table border=1 cellpadding=0 cellspacing=0>
  <tr>
    <th bgcolor="#99CCCC"><strong> Link component </strong></th>
    <th bgcolor="#99CCCC"><strong> Value </strong></th>
    <th bgcolor="#99CCCC"><strong> Unit </strong></th>
  </tr>
  <tr>
    <td> Transmit power </td>
    <td> +34 (3 watt) </td>
    <td> dBm </td>
  </tr>
  <tr>
    <td> Feedline loss </td>
    <td> 0 (assumed negligible) </td>
    <td> dB </td>
  </tr>
  <tr>
    <td> Antenna gain </td>
    <td> -8 </td>
    <td> dBi </td>
  </tr>
  <tr>
    <td> Loss free space </td>
    <td> -118.72 </td>
    <td> dB </td>
  </tr>
  <tr>
    <td> Ground antenna gain </td>
    <td> +17 (12 turn helix) </td>
    <td> dBi </td>
  </tr>
  <tr>
    <td> Feedline loss </td>
    <td> -1 (assumed small due to proximity) </td>
    <td> dB </td>
  </tr>
  <tr>
    <td> Preamp gain </td>
    <td> +15 </td>
    <td> dB </td>
  </tr>
  <tr>
    <td>
    </td>
    <td>
    </td>
    <td>
    </td>
  </tr>
  <tr>
    <td> Total signal at receiver </td>
    <td> -61.72 </td>
    <td> dBm </td>
  </tr>
</table>

### <a name="Best case &lt;em&gt;(Broadside to the CPA"></a> Best case \_(Broadside to the CPA)

<table border=1 cellpadding=0 cellspacing=0>
  <tr>
    <th bgcolor="#99CCCC"><strong> Link component </strong></th>
    <th bgcolor="#99CCCC"><strong> Value </strong></th>
    <th bgcolor="#99CCCC"><strong> Unit </strong></th>
  </tr>
  <tr>
    <td> Transmit power </td>
    <td> +34 (3 watt) </td>
    <td> dBm </td>
  </tr>
  <tr>
    <td> Feedline loss </td>
    <td> 0 (assumed negligible) </td>
    <td> dB </td>
  </tr>
  <tr>
    <td> Antenna gain </td>
    <td> +2 </td>
    <td> dBi </td>
  </tr>
  <tr>
    <td> Loss free space </td>
    <td> -118.72 </td>
    <td> dB </td>
  </tr>
  <tr>
    <td> Ground antenna gain </td>
    <td> +17 (12 turn helix) </td>
    <td> dBi </td>
  </tr>
  <tr>
    <td> Feedline loss </td>
    <td> -1 (assumed small due to proximity) </td>
    <td> dB </td>
  </tr>
  <tr>
    <td> Preamp gain </td>
    <td> +15 </td>
    <td> dB </td>
  </tr>
  <tr>
    <td>
    </td>
    <td>
    </td>
    <td>
    </td>
  </tr>
  <tr>
    <td> Total signal at receiver </td>
    <td> -51.72 </td>
    <td> dBm </td>
  </tr>
</table>

-42

:cool: but strange