FC-20_Manual操作说明书手册

Automatic Antenna TunerFC-20Installation InstructionsThank you for your purchase of the model FC-20 Automatic Antenna Tuner,designed specifically for theFT-847 HF/VHF/UHF Transceiver.The FC-20 can accommodate two antenna inputs,and it includes acooling fan to ensure thermal stability of the critical matching elements within its compact case.The FC-20 Automatic Antenna Tuner responds to control commands from the FT-847 Transceiver,providing microprocessor-based impedance matching on the 160 through 6 meter Amateur bands.OnHF,the impedance matching range is from 16.52 to 150 (up to 3:1 SWR),while on the 50 MHzbands the impedance matching range is 252 to 1002(up to 2:1 SWR).Accordingly,the FC-20 shouldnot be expected to match"long wire"type antennas unless you have taken specific design steps toensure that the impedance presented to the FC-20 is within these specifications.Please refer to the FT-847 Operating Manual for operating instructions.Front/Rear Panel InformationThe PowER indicatorbecomes illuminatedwhen the ControlYAESUCable is connected be-POWERANTENNAHF/50 MHz AUTOMATIC ANTENNA TUNERtween the FT-847 andFC-20FC-20 and when the1A001FT-847's POWERswitch is turned on.FRONT PANELThe ANTENNA switch allows you to select one of two antennasconnected to the rear panel jacks.The(protruding)"A"positionof this switch selects the"ANT A"jack,while the (depressed)“B”position selects the“ANTB”jack.These"M"type("SO-239")coaxial jacks accommodateUse this"M"type("SO-239")jack for connection ofthe“A”and“B”antenna inputs for the FC-20.the interconnecting coaxial cable from the FT-847.REAR PANELTRANSCEIVERANT AANT BConnect the inter-GNDCONTROLconnecting ControlCable from the FT-847 to this minia-ture DIN connector.This is the exhaust vent for the cooling fan,For best performance and safety,which ensures thermal stability of the match-connect a good earth ground to theing elements inside the FC-20 compartment.GND lug provided.日本語)脱明引甘裹面亿記載℃杨门ま寸.0005J-FK