DEMI_L70-28CK_用户操作说明书手册_RevB.pdf

DEMIPartNumberL70-28CKandK

TransverterSpecifications

PowerOutMaximum:Nominal25Wlinear

NoiseFigureandGain:1.0dBmaximum@17dBconversiongainminimum

DCPowerRequirement:11.5-15.5VDC@6AmpMax.

IFDriveLevelMaximum:RangeSelectablebetween-20dBmand25watts

KeyingOptionwith/withoutSequencer:PTT-L(toground)orPTT–H(PositiveVoltage)

UserInstalledOptions:IFDriveSense,NegativeVoltageGen.,CoolingFan

andSequencer

ConfigurationOverview:TheDEMIVHF/UHFtransverterlineisdesignedtointerfaceand

operatewithmostHighFrequencytransceiversthatareavailableonthemarkettoday.Sinceyou

choosetopurchaseakitversion,youmayconfigureittoyourspecificationsandinterfaceitwith

yourdesiredtransceiver.Thisconfigurationmaybechangedoralteredatanytimeifyoudesireto

utilizeadifferenttransceiverorchangeyousystem’sconfiguration.

DEMIPartNumberVerification:AllDEMIVHF/UHFtransverterscontaintheoperating

frequencywithinthepartnumber,i.e.70-28CKorKisequatedto70MHzbeingconvertedto28

MHz.Understandthattheconversionissimplemath.Ifyoudesiretooperateon71.500MHz.with

your70-28,itwillrequireyoutoadjustyoutransceiverto29.500MHz.

PowerOutMaximum:Themaximumlinearoutputpowerindicatedonthiskitis25W.Thislevel

shouldnotbeexceedediflinearoperationisexpected.Thetransvertermaybecapableof

producinghigheroutputpowerbutisnotrecommendedbecauseofexcessiveheatingthatwill

interferewithitsfrequencystabilitywhileproducingexcessive“ontheair”distortionproducts

NoiseFigureandGain:Thenoise