Bird Technologies 15-88-01 User Manual
Page 12
TX RX Systems Inc. Manual 7-9150-2 07/19/07 Page 8
Voltage
Ratio
Power
Ratio
dB
Voltage
Ratio
Power
Ratio
1
1
0
1
1
0.989
0.977
0.1
1.012
1.023
0.977
0.955
0.2
1.023
1.047
0.966
0.933
0.3
1.035
1.072
0.955
0.912
0.4
1.047
1.096
0.944
0.891
0.5
1.059
1.122
0.933
0.871
0.6
1.072
1.148
0.923
0.851
0.7
1.084
1.175
0.912
0.832
0.8
1.096
1.202
0.902
0.813
0.9
1.109
1.23
0.891
0.794
1
1.122
1.259
0.881
0.776
1.1
1.135
1.288
0.871
0.759
1.2
1.148
1.318
0.861
0.741
1.3
1.161
1.349
0.851
0.724
1.4
1.175
1.38
0.841
0.708
1.5
1.189
1.413
0.832
0.692
1.6
1.202
1.445
0.822
0.676
1.7
1.216
1.479
0.813
0.661
1.8
1.23
1.514
0.804
0.646
1.9
1.245
1.549
0.794
0.631
2
1.259
1.585
0.785
0.617
2.1
1.274
1.622
0.776
0.603
2.2
1.288
1.66
0.767
0.589
2.3
1.303
1.698
0.759
0.575
2.4
1.318
1.738
0.75
0.562
2.5
1.334
1.778
0.741
0.55
2.6
1.349
1.82
0.733
0.537
2.7
1.365
1.862
0.724
0.525
2.8
1.38
1.905
0.716
0.513
2.9
1.396
1.95
0.708
0.501
3
1.413
1.995
0.7
0.49
3.1
1.429
2.042
0.692
0.479
3.2
1.445
2.089
0.684
0.468
3.3
1.462
2.138
0.676
0.457
3.4
1.479
2.188
0.668
0.447
3.5
1.496
2.239
0.661
0.437
3.6
1.514
2.291
0.653
0.427
3.7
1.531
2.344
0.646
0.417
3.8
1.549
2.399
0.638
0.407
3.9
1.567
2.455
0.631
0.398
4
1.585
2.512
0.624
0.389
4.1
1.603
2.57
0.617
0.38
4.2
1.622
2.63
0.61
0.372
4.3
1.641
2.692
0.603
0.363
4.4
1.66
2.754
0.596
0.355
4.5
1.679
2.818
0.589
0.347
4.6
1.698
2.884
0.582
0.339
4.7
1.718
2.951
0.575
0.331
4.8
1.738
3.02
0.569
0.324
4.9
1.758
3.09
0.562
0.316
5
1.778
3.162
0.556
0.309
5.1
1.799
3.236
0.55
0.302
5.2
1.82
3.311
0.543
0.295
5.3
1.841
3.388
0.537
0.288
5.4
1.862
3.467
0.531
0.282
5.5
1.884
3.548
0.525
0.275
5.6
1.905
3.631
0.519
0.269
5.7
1.928
3.715
0.513
0.263
5.8
1.95
3.802
0.507
0.257
5.9
1.972
3.89
0.501
0.251
6
1.995
3.981
0.496
0.246
6.1
2.018
4.074
0.49
0.24
6.2
2.042
4.169
0.484
0.234
6.3
2.065
4.266
0.479
0.229
6.4
2.089
4.365
0.473
0.224
6.5
2.113
4.467
0.468
0.219
6.6
2.138
4.571
0.462
0.214
6.7
2.163
4.677
0.457
0.209
6.8
2.188
4.786
0.452
0.204
6.9
2.213
4.898
0.447
0.2
7
2.239
5.012
0.442
0.195
7.1
2.265
5.129
0.437
0.191
7.2
2.291
5.248
0.432
0.186
7.3
2.317
5.37
0.427
0.182
7.4
2.344
5.495
0.422
0.178
7.5
2.371
5.623
0.417
0.174
7.6
2.399
5.754
0.412
0.17
7.7
2.427
5.888
0.407
0.166
7.8
2.455
6.026
0.403
0.162
7.9
2.483
6.166
0.398
0.159
8
2.512
6.31
0.394
0.155
8.1
2.541
6.457
0.389
0.151
8.2
2.57
6.607
0.385
0.148
8.3
2.6
6.761
0.38
0.145
8.4
2.63
6.918
0.376
0.141
8.5
2.661
7.079
0.372
0.138
8.6
2.692
7.244
0.367
0.135
8.7
2.723
7.413
0.363
0.132
8.8
2.754
7.586
0.359
0.129
8.9
2.786
7.762
0.355
0.126
9
2.818
7.943
0.351
0.123
9.1
2.851
8.128
0.347
0.12
9.2
2.884
8.318
0.343
0.118
9.3
2.917
8.511
0.339
0.115
9.4
2.951
8.71
0.335
0.112
9.5
2.985
8.913
0.331
0.11
9.6
3.02
9.12
0.327
0.107
9.7
3.055
9.333
0.324
0.105
9.8
3.09
9.55
0.32
0.102
9.9
3.126
9.772
Voltage
Ratio
Power
Ratio
dB
Voltage
Ratio
Power
Ratio
Power Ratio and Voltage Ratio to Decibel
Conversion Chart
Loss or Gain
Power Ratio
Voltage Ratio
+9.1 dB
8.128
2.851
-9.1 dB
0.123
0.351
- dB +
- dB +