Yaesu FT-857D Operating Manual

Also see for FT-857 series: Manual Technical supplement Operation manual Brochure & specs Technical supplement

Contents

Yaesu FT-857D Operating Manual Manual pdf 51 page image

49FT-857 Operating ManualTRANSMITTER OPERATIONVOX OperationThe VOX system provides automatic transmit/receive switching based on voice input to themicrophone. With the VOX system enabled, you do not need to press the PTT switch inorder to transmit.1. Press the [FUNC] key momentarily, then rotate the SELECT knob, as needed, untilMulti Function Row “d” [RPT, REV, VOX] appears on the display.2. Press the [C](VOX) key to activate the VOX circuitry. The “u” icon will appear at theleft side of the “VOX” notation, and the “ ” icon will appear on the display..3. Without pressing the PTT switch, speak into the microphone in a normal voice level.When you start speaking, the transmitter should be activated automatically. When youfinish speaking, the transceiver should return to the receive mode (after a short delay).4. To cancel VOX and return to PTT operation, again press the [C](VOX) key. The “u”icon and “ ” icon will disappear, signifying that the VOX system has been turned off.5. The VOX Gain may be adjusted, so as to prevent accidental transmitter activation in anoisy environment. To adjust the VOX Gain:ü While still in Multi Function Row “d” [RPT, REV, VOX], press and hold in the [C](VOX)key for one second. This is a “hot key” feature which will instantly recall MenuMode No-088 [VOX GAIN].ü While speaking into the microphone, rotate the DIAL to the point where the transmit-ter is quickly activated by your voice, without causing background noise to activatethe transmitter.ü When you have selected the optimum setting, press and hold in the [FUNC] key forone second to save the new settings and return to normal operation.6. The “Hang-Time” of the VOX system (the transmit-receive delay after the cessation ofspeech) may also be adjusted via the Menu. The default delay is 500 ms. To set a differ-ent delay time:ü Press and hold in the [FUNC] key for one second to activate the Menu mode.ü Rotate the SELECT knob to recall Menu Mode No-001 [EXT MENU], then rotatethe DIAL to change the setting to “ON” to enable the extended Menu Mode.ü Rotate the SELECT knob to select Menu Mode No-087 [VOX DELAY].ü Rotate the DIAL while saying a brief syllable like “Ah” and listening to the hangtime, so as to set the desired delay.ü When your adjustments are complete, press and hold in the [FUNC] key for onesecond to save the new setting and return to normal operation.The delay time for return to the receive mode is set independently on CW andvoice modes; for CW, use Menu Mode No-024 [CW DELAY] (see next chapter).SSB/AM TRANSMISSION