Yaesu FT DX 9000 CONTEST - 2, Руководство по эксплуатации

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Page 64 FT
DX
9000 C
ONTEST
O
PERATION
M
ANUAL
action is reached (usually several dozen dB above the
no-signal noise floor). The FT
DX
9000 Contest, how-
ever, includes an innovative Sloped AGC system, that
allows the audio volume to rise and fall slightly accord-
ing to signal strength. Although the rise/fall are not dra-
matic, they are sufficient to allow you to use your ear to
discern and separate signals according to signal strength,
not just audio frequency.
Using Sloped AGC
1. To the bottom right side of the LCD, press the
MNU (Menu) key (# ) momentarily to enter
the Menu mode; the Menu will appear on the LCD.
2. Use the Main Tuning Dial knob (# ) to select
Menu Item “ RX AUDIO 075 AGC-SLOPE .
3. Rotate the CLAR/VFO-B knob (# ) to change
the setting to “SLOPE.”
4. Press and hold in the MNU key for two seconds
to save the new setting and exit to normal opera-
tion. You will now be using the Sloped AGC sys-
tem.
In traditional AGC systems, the audio output from the transceiver becomes essentially fixed once the threshold for AGC
T
OOLS FOR
C
OMFORTABLE AND
E
FFECTIVE
R
ECEPTION
NORMAL
Input Signal
A
u
d
io
O
u
tp
u
t
SLOPE
CLAR/VFO-B knob
MNU key
Main tuning dial
AGC
(
A
UTOMATIC
G
AIN
C
ONTROL
)