Yaesu FT-891 Advance Manual page 100

Menu Mode
16-19 ANTI VOX GAIN
Function: Sets the VOX anti-trip.
Available Values: 0 - 100
Default: 50
Description: The sensitivity of the anti-trip circuit may be adjusted so that the VOX circuit
does not accidently engage due to the sounds from the transceiver speaker.
Increase the anti-trip value to the point that sounds from the transceiver
speaker do not engage the transmitter while using VOX operation.
16-20 DATA VOX GAIN
Function: Sets the VOX GAIN while operating VOX during the sending/receiving of data
( PSK31, RTTY, etc. ) .
Available Values: 0 - 100
Default: 50
Description: Set the data input VOX gain to the point that the data signal reliably engages
the transmitter, and also releases the transmit when there is no data signal.
16-21 DATA VOX DELAY
Function: Sets the VOX DELAY time while operating VOX during the sending/receiving
of data ( PSK31, RTTY, etc. ) .
Available Values: 30 - 3000 ( msec )
Default: 100msec
16-22 ANTI DVOX GAIN
Function: Sets the data VOX ant-trip.
Available Values: 0 - 100
Default: 0
Description: The sensitivity of the anti-trip circuit may be adjusted so that the VOX
circuit does not accidently engage due to the received data while operating
VOX. Increase the setting to a value that the VOX circuit does not engage
due to the received data ( the higher the value the greater the operation
sensitivity ) .
16-23 EMERGENCY FREQ
Function: Enables TX/RX operation on the Alaska Emergency Channel, 5167.5kHz.
Available Values: ENABLE/DISABLE
Default: DISABLE
Description: When this Menu Item is set to ENABLE, the spot frequency of 5167.5 kHz
will be enabled.
The Alaska Emergency Channel will be fount between the PMS memory
channel "P9U" and the memory channel "01".
Important: The use of this frequency is restricted to stations operating in or near Alaska,
and only for emergency purposes ( never for routine operations ) .
See §97.401 ( c ) of the FCC regulations.
100 FT-891 Advance Manual