ICOM艾可慕Icom_IC-2KL_adjust

725/1999As compiled by AB40]and K9NXICOM IC-2KL ADJUSTMENT PROCEDUREIC-2KLINSTRUMENTTESTADJUSTMENTCONDITIONSREQUIREDUNITPOINTUNITPARTSHOW TO ADJUSTREADINGINITIALConnect IC-2KL to the RIF exdterMAINR44MAXIMUM CLOCKVSESETUP(RF INPUT,ALC,PTT,ACC,etc).MAIN36MAXIMUM CLOCK WISEConnect IC-2KL output to aMAINR18TURN R18 AND ADJUST STARTINGdummy load.Comedt IG-2KL toFROM MAXIMUM COUNTER-the power supply IC-2KLPS.OCKWISEIDLELift center tap lead from L4 andmmeter (1 A)】PowerPA1R9 PA1ADJUST R9 (ON PA-1)FOR 200maCURRENTnsert an ammeter.到pyregulatorPA2R9@P2REPEAT ABOVE FOR PA-2unitVe METERMeter switch:VcMulfmeterVc meterMAINR40ADJUST R40 TO INDICATE THE SAMEConnect mutimeter to fuse (F1)VOLTAGE AS SHOWN ON THEMULTIMETERPROTECTIONMeter switch:PRODummy LoadPROR1ADJUST ALC ADJUSTMENT POT (R1)CENTER OF PRO"CIROUITSet mode to RTTY and tansmitmeterFOR CENTER OF "PRO"ZONE (Vc=50)ZONEfull power 14MHzMAINR44.ADJUST R44 GRADUALLY UNTIL THEPROTECTIONPROTECTION CIROIT ACTIVATESCIRCUITTHRESHOLDVSWRShort the cathode of D2 to ground.Dummy LoadFILC54dus或C54 for minimumMinimumConnect a mutimeter to pinB on J2of the FIL unit.Set mode to RTTYand Transmit full power a14MHz.Remove the shortPowerMeter Switch:PRO.RF Power MeterAntemnaMAINR1ADJUST ALC ADJUSTMENT POT (R1)Center ALC ZoneSet the mode toRTTY andconnecorFOR CENTER OF ALC ZONE女ansmit ful p0er@14MHzR18.ADJUST R18 FOR 500W.REPEAT BOTHADJUSTMENTS SEVERAL TIMESPOWERMeter Switch PRO.Dummy LoadMeterR11ADJUST R11 FOR 500W500WMETERSet he mode toRTTY andtransmt ful power 14 MHzIC METERMeter Switch:Ic.Dummy LoadMeterMAINR41ADJUST R41 TO READ THE SAMECURRENT OF THERemove fuse F1 and insert anCURRENT AS THE AMMETERAMMETERAmmeterIC PROTECTMeter Switch:Ic.Dummy LoadeMAINR36ADJUST R36 FOR 23 AMPS23 AMPSInstall a 20 chm 100W resistorbetween ground and the end of R2opposite from F1 .Set the mode toRTTY and transmit 100w/1.9 MHz(Remove the 20 chm resistor afteradjustment).