Yaesu FT DX 3000 Operating Manual

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Contents

Page 72 FT DX 3000 O peraTing M anualvOX (ssb/Am/Fm mOdes: AUTOmATic TX/rX swiTching Using vOice cOnTrOl)Instead of using the microphone’s PTT switch or the front panel [MOX] switch to activate the transmitter, the VOX (VoiceOperated TX/RX Control) system provides hands-free, automatic activation of the transmitter, based on voice input intothe microphone.1. Press the [p/q/t/u] button to select the “VOX”,then press the [SELECT] button to select “ON”.The “VOX” will appear in the display.2. Without pressing the PTT switch, speak into themicrophone in a normal voice level. When you startspeaking, the transmitter should be activated auto-matically. When you finish speaking, the transceivershould return to the receive mode (after a short de-lay).3. To cancel VOX and return to PTT operation, pressthe [SELECT] button once more. The “VOX” willturn off, signifying that the VOX circuitry has beenturned off.A dvice : The VOX Gain may be adjusted to prevent acciden-tal transmitter activation in a noisy environment. Toadjust the VOX Gain:1) Activate the VOX circuitry, if necessary.2) Press the [MENU] button to engage the Menumode.3) Rotate the [CLAR/VFO-B] knob (or press thep /q button) to select Menu item “181 VOXGAIN”, then press the [SELECT] button.4) While speaking into the microphone, rotate the[CLAR/VFO-B] knob (or press the p/q button)to the point where the transmitter is quickly ac-tivated by your voice, without background noisecausing the transmitter to activate.5) When you satisfied with the setting, press the[SELECT] button, then press the [MENU] but-ton to save the new setting and exit to normaloperation. The “Hang-Time” of the VOX system (the transmit/receive delay after the cessation of speech) may alsobe adjusted via the Menu mode. The default delay is500 msec. To set a different delay time:1) Activate the VOX circuitry, if necessary.2) Press the [MENU] button to engage the Menumode.3) Rotate the [CLAR/VFO-B] knob (or press thep/q button) to select Menu item “182 VOX DE-LAY”, then press the [SELECT] button.4) Rotate the [CLAR/VFO-B] knob while saying abrief syllable like “Ah” and listening to the hangtime for the desired delay.5) When you are satisfied with the setting, pressthe [SELECT] button, then press the [MENU]button to save the new setting and exit to normaloperation.TranSMiTTer cOnvenience FeaTureS The Anti-Trip setting adjusts the level of negative re-ceiver audio feedback to the microphone, to preventreceiver audio from activating the transmitter (viathe microphone). This setting can also be adjustedvia Menu item “183 ANTI VOX GAIN”. VOX operation may be engaged on either Voicemodes (SSB/AM/FM) or on AFSK-based Datamodes. Use Menu item “180 VOX SELECT” (the se-lections are “MIC” and “DATA”).[CLAR/VFO-B] Knob[MENU] Button [SELECT] Button[p/q/t/u] Button