User Manual
![](/manual/standard-communications/cm1039u/user-manual-english/images/img-13.png)
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DCPOWERCONECTION
TheCM1039isdesignedfor13.8VoltDC,negativeearthinstallationsonly(i.e.wherethe
negativeterminalofthebatteryisconnectedtothechassisorframeofthevehicle).
Twoin‐line10Ampfusesaresupplied.Thesefusesaretobeconnectedasclosetothe
batteryaspossible.Theradio’spositive(red)leadshouldbeconnectedviaa10Ampfuse
directlytothebattery’spositiveterminal.Connecttheradio’snegative(black)leadviaa10
Ampfusedirectlytothebattery’snegativeterminal.
ANTENNAINSTALLATION
TocomplywithFCCexposurelimitstheradiomustbeinstalledusinganexternallymounted
antennawithagainofeither2.15dBior5.15dBi.Forbestresultsyourantennashouldbe
professionallyinstalledusingindustrystandardtechniques.
Transmitonlywhenbystandersareataminimumsafedistanceof35inches(0.9m)from
theantenna.