Yaesu FT DX 3000 Operating Manual

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Page 65FT DX 3000 O peraTing M anualA bout Atu operAtion)igure depicts a situation Zhere normal tuning Yia the $78 has Eeen successfully completed and the tuning data hasEeen stored in the $78 memory. 7he antenna system as seen Ey the transmitter is shoZn.In )igure the operator has changed freTuency and the ³HI-SWR´ icon has appeared. 7he operator presses and holdsin the [TUNE@ Eutton for tZo seconds to Eegin impedance matching using the $78.If a high 6:5 condition e[ists aEoYe correctiYe action must Ee taNen in the antenna system to Ering the imped-ance closer to 2hms. 7he $78 Zill refuse to memori]e settings on freTuencies Zhere the 6:5 e[ceeds . $ +igh6:5 may indicate a mechanical failure in the feed system and can lead to the generation of spurious signals causing79I etc.About ATU MemoriesSWR (After tuning) Less than 1.5:17he tuner settings are stored in the $78 memory.SWR (After tuning) Greater than 1.5:17uning data Zill not Ee retained in memory. If you return to the same freTuency the tuning process must Ee re-peated.SWR (After tuning) Greater than 3:17he ³HI-SWR´ icon Zill light up and the tuner settings if achieYed Zill not Ee memori]ed. 3lease inYestigatethe high 6:5 condition and resolYe the proElem Eefore attempting further operation using this antenna.u sinG the automatic antenna tunerFigure 1Figure 2Feed Point SWRSWR: 3.0Retuned SettingMemorized ATU TuningThe “HI-SWR” icon appears on the didplaywhen you transmit on the frequencySWR after ATU TuningFrequencyFrequency