Bird technologies group tx rx systems inc – Bird Technologies 61-89A-50 Series-Manual User Manual
Page 26
Bird Technologies Group TX RX Systems Inc.
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 +