Blonder tongue AMM-806, Reference Manual

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Cable Loss Conversion Chart
Use this chart to find a cable span’s attenuation at a new frequency if
you already know its attenuation at one frequency.
If you know the cable loss at f
1
and want to find the corresponding loss
at a higher frequency f
2
multiply the loss at f
1
by the conversion factor.
The result is the cable loss at f
2
.
If you know the cable loss at f
2
and want to find the corresponding loss
at a lower frequency f
1
divide the loss at f
2
by the conversion factor.
The result is the cable loss at f
1
.
Example: If a cable span attenuates a 220 MHz signal by 10 dB, by how much will it
attenuate a 300 MHz signal?
Loss at 300 MHz = Loss at 220 MHz x conversion factor = 10 dB x 1.168 = 11.68 dB
f1 f2 f1 f2
(MHz) (MHz) (MHz) (MHz)
220 270 1.108 400 440 1.049
220 300 1.168 400 500 1.118
220 330 1.225 400 550 1.173
220 400 1.348 400 600 1.225
220 440 1.414 400 750 1.369
220 500 1.508 400 860 1.466
220 550 1.581 400 1000 1.581
220 600 1.651
270 300 1.054 440 500 1.066
270 330 1.106 440 550 1.118
270 400 1.217 440 600 1.168
270 440 1.277 440 750 1.306
270 500 1.361 440 860 1.398
270 550 1.427 440 1000 1.508
270 600 1.491
300 330 1.049 500 550 1.049
300 400 1.155 500 600 1.095
300 440 1.211 500 750 1.225
300 500 1.291 500 860 1.311
300 550 1.354 500 1000 1.414
300 600 1.414
330 400 1.101 550 600 1.044
330 440 1.155 550 750 1.168
330 500 1.231 550 860 1.250
330 550 1.291 550 1000 1.348
330 600 1.348 1000 1250 1.118
330 750 1.508 1000 1500 1.225
330 860 1.614 1000 1750 1.323
330 1000 1.741 1000 2000 1.414
1000 2150 1.466