Yaesu FT-920, Operating Manual

Page: 82 / 98

FT-920 Operating Manual
80
U-51 (MIC-EQ)
Function: Set the DSP microphone equalization pat-
tern, if desired
Available Values:
oFF
/
1
/
2
/
3
/
4
Default:
oFF
This Menu Item allows you to tailor, via the DSP, the
audio response of the transceiver to match your voice
characteristics. This focuses the available power of
the transceiver into the frequency spectrum occupied
by your voice, thus increasing useful power output.
The choices are:
oFF
This function is disabled.
1
Mid- and high-frequency components are
enhanced with this setting.
2
A high-emphasis response is produced,
ideal for pile-up or contest work.
3
Both low- and high-emphasis responses
are produced.
4
A wide bandpass response is produced,
emulating a “broadcast” microphone audio
characteristic.
The [DSP] key on the front panel does not have to be
on for this feature to work, as On/Off control is im-
plicit in the menu selections provided. Use the “Moni-
tor” feature to select the audio response most suited
for your voice.
U-52 (
LI-TU-S
)
Function: Activate the Linear Amplifier Tuning pulser
Available Values: N/A
Default:
oFF
After selecting this Menu Item, pressing the [E
NT
] key
activates the pulser for a time duration established
via Menu Item U-55, and the time remaining will count
down on the U-52 status screen. The characteristics
of the pulser are set via Menu Items U-53 ~ U-57.
This feature may be ideal for inclusion as a “Quick
Menu” item.
U-53 (
LI-A-PO
)
Function: Set the power output for the Linear Ampli-
fier Tuning pulser via Antenna-A
Available Values:
100
/
50
/
10
Default:
100
If you have different amplifiers for different bands,
each with unique drive requirements, you may use
this setting to define the tune-up power level via the
A antenna port.
U-54 (
LI-B-PO
)
Function: Set the power output for the Linear Ampli-
fier Tuning pulser via Antenna-B
Available Values:
100
/
50
/
10
Default:
100
If you have different amplifiers for different bands,
each with unique drive requirements, you may use
this setting to define the tune-up power level via the
B antenna port.
U-55 (
LI-TIME
)
Function: Define the duration of the Linear Amplifier
Tuning pulser’s tune-up period
Available Values:
3
~
60
Seconds
Default:
10
Seconds
When the [ENT] key is pressed while in Menu Item
U-52, a pulsed signal will be transmitted for a num-
ber of seconds, after which the transceiver will return
to the Receive mode. The tuning time period is set
via this Menu Item.
U-56 (
LI-SPAC
)
Function: Set the length of the spaces between the
T
X
pulses defined in Menu Item U-57
Available Values:
0
~
3000
ms.
Default:
100
ms.
A lower value set in this Menu Item makes the pulser’s
action more closely appear to resemble a continu-
ous “key-down” tone. The duty cycle is lower, though,
depending on the pulse length set via Menu Item U-
57.
U-57 (
LI-MARK
)
Function: Set the length of the T
X
pulse for the Lin-
ear Amplifier Tuning pulser
Available Values:
0
~
3000
ms.
Default:
100
ms.
A lower value set in this Menu Item reduces the duty
cycle of the transceiver/amplifier during linear ampli-
fier tune-up.
p