八重洲Yaesu_FC-20_user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 16.59 to 1509 (up to 3:1 SWR),while on the 50 MHzbands the impedance matching range is 252 to 1009 (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 illuminatedYAESUwhen the ControlCable is connected be-POWER ANTERHF/50 MHz AUTOMATIC ANTENNA TUNERFC-20tween the FT-847 andFC-20 and when theFT-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"jackThese"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-GNDconnecting Control@:@toCable from the FT-847 to this miniature 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①脱明甘裹面尼記載乙ōま寸.0209I-KK