MFJ-901B_Manual操作说明书手册

MFJ-901B VERSA TUNERThank you for purchasing the MFJ-901B Versa Tuner.GEn盒KB1 Informa上⊥9nThe MFJJ-901B Versa Tuner is desi gned to match virtually anytransmitter(upto2 00 watt每RF power output)t01mo每北anyantenna.This includes dipoles,inverted vees,random wires,vert ica1s,mab11 e wh ips,beam色，and others fed by coax】ines orsingle wire from 160 through ten meters.A 1:4 balun is built infor balanced 1ines.LNsI白II2y1.Install the MFJ--901 between your antenna and SWR/Watt meteras shown in Figure 1.Connect a coax 1ine from the $0-239coax connector on the rear of the tuner marked TRANSMITTERto an SWR meter connected to the trarsceiver.2.Coax fed antennas must be connected to the $0-239 coaxconnector marked COAX on the tuner.3.Ba】anced】ine fed ant会ina must be connected to the two flve-way binding posts marked BALANCED LINE,and a jumper wireconnected from the left BALANCED LINE binding post to theWIRE binding post as indicated by the dotted line on therear of the tuner.4,Random wire antennas must be connected to the five-wayb inding post marked WIRE.Remove any jumpers from theBALANCED LINE to the WIRE binding post.The random wireshould be long,high,and clear of surrounding objects aspossible.Do not ground the random wire antenna.The wireant enna should be quarter wave length or Ion ger at operat ingf“经ql1nryNOE:Make sure the:MF J-901B is well grounded to thetr8nmit北哈r.u坦ING IHE ME-Q1旦The INDUCTANCE switch on the MFJ-901B presents a min i mumtinductance at posit ion“A”,Minimum inductance i台used at thehigher frequencies.At“6”the TRANS州ITTER and ANTENNA controlspresent maximum capac itance.Before installing the MF,J-901B,yourtransmitter must be tuned for a 50 ohm output impedence for eachfrequency band.To do this a 50 ohm dummy load is recommended.After properly tun ing your transmitter,.instal1..the MFJ-9018described in”Insta11 at ion”,Aft:er:properly install ing the MJ-9018,use the tuner to tune...for minimum SWR as described below.Do not re-ad just thet:ransm it ter tun ing for min.imum SWR ...1.Set TRANSMITTER and ANTENNA controls to 3.5 (capacitors halfopen俗d).925-0014-901B-f10v.1