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Preparations – PLANET WBT-1000 User Manual

Page 10

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10

Preparations

In. order. to. obtain. the. best. performance. of. booster. and. system,. user. must.
calculate. the. transmission. power. to. meet. the. booster. technical. requirement. and.
FCC.regulations..Please.follow.the.calculation.below:

1..Convert.power.of.the.radio.device.from.milliwatt.to.dBm.

Note

10.*.Log.(milliwatt)

2. Estimate the attenuation of cable (please refer to manufacturer’s specifications)

Note

It.is.suggested.that.the.cable.loss.between.booster.and.DC.injector.
should.not.exceed.10.dBm.

General Cable Attenuation List

LMR400

LMR600

LMR900

dB loss per meter

0.221

0.144

0.098

Suggested max. cable length (m)

45.24

69.44

102.04

3..Calculate.the.actual.power.of.booster.in.the.pole.as.follow:

. Radio.Device.Power.(dBm).–.Cable.Loss.(dBm).–.Misc..Loss.=.Input.Signal.Level.

(dBm)

Note

Misc.. Loss. means. loss. of. connector,. adapter. and. DC. injector. and.
estimates.to.be.around.2.dB.

4..When. the. input. signal. level. exceeds. the. Receiver. Input. Power. of. booster,. the.

booster can’t identify the input signal. Under this circumstance, user should
lower the input signal level to fit the requirement such as using an attenuation
pad.or.a.higher.loss.cable.and.vice.versa.

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