Yaesu FT DX 3000 Operating Manual

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Contents

Page 82 FT DX 3000 O peraTing M anualU sing cw reverseIf you experience a difficult interference situation, where an interfering station cannot readily be eliminated, you maywish to try receiving using the opposite sideband. This may move the interfering station’s frequency in a direction thatmay lend itself more readily to rejection.1. To start, let’s use a typical example where you haveset the CW mode (using the default “USB” injec-tion).2. Now be sure your mode selection is still set for VFO-A, and then press and hold in the [MODE] button forone second. The “LSB” and “CW” will appear in thedisplay, indicating that the “LSB” injection side hasnow been selected.3. To return to the normal (USB) injection side andcancel CW Reverse operation, press and hold in the[MODE] button for one second. (the “USB” and“CW” will appear in the display).nOTes: When CW Reverse is engaged, the action of the Tun-ing Offset Indicator will also be reversed When the incoming signal pitch tone is properlyaligned, the central red marker lights up whether ornot CW Reverse is engaged.In the illustration, Figure “A” demonstrates thenormal CW injection setup, using the USB side.In Figure “B”, CW Reverse has been engaged toreceive using LSB-side injection and eliminateinterference.The beneficial effect of switching sidebands canbe clearly seen in this example.cW cOnvenience FeaTureS[MODE] ButtonABNormal CW(USB) CarrierCarrierQRMQRMSignalRX PassbandRX PassbandSignalCW Reverse(LSB)Retune: Shift to Lower FrequencyRetune: Shift to Higher FrequencyZero-In