Kenwood Complete Guide to TS-480HX and TS-480SAT Manuals

8 COMMUNICATING AIDS

TRANSMISSION	■ Delay Time
VOX (VOICE-OPERATED TRANSMIT)	If the transceiver returns to reception mode too
	quickly after you stop speaking, your final word
VOX eliminates the necessity of manually switching	may not be transmitted. To avoid this, select an
	appropriate delay time that allows all of your
to the transmission mode each time you want to
	words to be transmitted without an overly long
transmit. The transceiver automatically switches to
	delay after you stop speaking.
transmission mode when the VOX circuitry senses
	1 Select USB, LSB, FM, or AM mode.
that you have begun speaking into the microphone.
When using VOX, develop the habit of pausing	2 Press [VOX/ 8] to switch the VOX function ON.
between thoughts to allow the transceiver to drop	¥ ÒVOXÓ appears.
back to reception mode briefly. You will then hear if
	3 Press [KEY/ DELAY] (1 s).
anybody wants to interrupt, plus you will have a short
period to gather your thoughts before speaking again.	¥ The current setting appears on the sub-
Your listeners will appreciate your consideration as	display. The default is 50 (1500 ms).
well as respect your more articulate conversation.
VOX can be switched ON and OFF independently for
CW and the other modes, excluding FSK.
Press [VOX/ 8] to toggle between VOX ON and OFF.

¥ÒVOXÓ appears when the VOX function is ON.

■Microphone Input Level

To enjoy the VOX function, take the time to properly adjust the gain of the VOX circuit. This level controls the capability of the VOX circuit to detect the presence or absence of your voice. In CW mode, this level cannot be adjusted.

1 Select USB, LSB, FM, or AM mode.

2 Press [VOX/ 8] to switch the VOX function ON.

¥ÒVOXÓ appears.

4While speaking into the microphone using your normal tone of voice, turn the MULTI control such that the transceiver switches to reception mode after you have stopped talking.

¥The selectable range is from 5 to 100

(150 ms to 3000 ms) in steps of 5, or OFF.

5Press [MTR/ CLR] to store the parameter and exit the setting mode.

■Anti-VOX adjustment

The TS-480 transceiver has a DSP IC to improve and customize incoming/ outgoing audio signals. When VOX function is turned ON, the DSP IC adjusts the Anti-VOX level automatically, comparing the reception sound level and microphone input level. So, you never have to worry about adjusting the anti-VOX level.

3Press [VOX/ 8] (1 s).

¥The current VOX gain level appears on the sub-display.

4While speaking into the microphone using your normal tone of voice, adjust the setting (default is 4) using the MULTI control until the transceiver reliably switches to transmission mode each time you speak.

¥The selectable gain range is from 0 to 9.

¥The setting should not allow background noise to switch the transceiver to transmit mode.

Note: The VOX gain level can be adjusted even if VOX is switched OFF or while you are transmitting.

■VOX Source

Although microphone is normally used to perform the VOX transmission, you can also utilize AF input of the DATA connector (pin 1) on the TX/ RX unit {page 78}. When the transceiver detects the audio signal on the pin 1 of DATA connector, the transceiver automatically transmits.

1 Select USB, LSB, FM, or AM mode.

2Press [VOX/ 8] to switch the VOX function ON. ¥ ÒVOXÓ appears.

3Press [MENU/ F.LOCK] and turn MULTI control to select Menu No. 60.

4Press [] to switch the VOX with DATA input function ON.

5Turn MULTI control to select Menu No. 46.

6While sending AF signal to pin 1 of DATA connector, adjust the value (default is 4) using []/ [] until the transceiver reliably switches to transmit mode each time you send AF signal to pin 1 of DATA connector.

Note: VOX function does not work even if you speak into the microphone. However, you can transmit with the Mic [PTT].

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