MFJ-914_Manual操作说明书手册

MFJ-914 Auto Tuner Extender"MFJ-914 AutoTuner ExtenderTMGeneral Information:Does your automatic antenna tuner have limited matching range?Can't auto-tune your antenna on all bands?Do you have to pre-tune your antenna witha manual tuner?The MFJ-914 AutoTuner Extender"greatly extends your automatictuner's matching range.Now you can match nearly any antennaautomatically!The MFJ-914 s a heavy duty,wide range impedence transforming device.It has been carefully designed for the flattest frequency response and thelowest loss.MF]'s Auto Tuner Extender"transforms your antenna impedence -up ordown -by as much as 10 times!The MFJ-914 puts nearly anyantenna into the matching range of your automatic tuner!Extend your power range by transforming your antenna impedence so yourtuner can be used in a higher power Low-Q mode.The MFJ9 14 also extendsmanual antenna tuners.You can use any tranceiver from 160 through 10 meters with up to300 watts.Installation:The MFJ-914 connects in-line between your transmitter and antenna.Connect your transmitters antenna output to the SO-239 connectorlabeled Transmitter,and your antenna to the Antenna connector.Formaximum protection of your tranceiver,a 50 Ohm dummy load should beconnected to the plug labeled Dummy Load,and the Ground studconnected to a good RF ground.Operation:The MFJ-914 Auto Tuner Extender is easy to use!First,bypass yourtransmitters auto-tuner.Then,while transmitting at a low output power,adjust the knob (from position A through G)on the MFJ-914 until yousee minimum SWR on your transmitter.Now you're ready to autotune.The Off Dummy Load position on the knob protects your tranceiver byconnecting it to an external dummy load,and by grounding yourantenna to bleed off static.The switch position D provides a throughconnection from your transmitter to your antenna.1