PLANET WBT-1000 - Manual (Page 10)

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.