Yaesu FTDX5000 CAT BOOK, Operating Manual

Page: 21 / 148

Page 19 FT
DX
5000 O
PERATING
M
ANUAL
F
RONT
P
ANEL
C
ONTROLS
& S
WITCHES
[
AGC
]
Switch
Move this knob up and down to select the receiver AGC
characteristics (receiver-recovery time). Available se-
lections are FAST, MID, SLOW, or AUTO, and the
selected receiver-recovery time appears in the AGC
column of the Block Diagram Display.
Hold this knob up or down for two seconds to disable
the AGC (for testing or weak-signal reception).
A
DVICE
:
ˆ Press this knob in briefly to quickly select “AUTO”.
ˆ
If the AGC is disabled by holding the [
AGC
] knob
up or down, the S-meter will no longer deflect. Ad-
ditionally, you will likely encounter distortion on
stronger signals, as the IF amplifiers and the fol-
lowing stages may be overloaded.
[
METER
]
Switch
This control switch determines the function of the meter
during transmission.
COMP : Indicates the speech compression level (SSB
mode only).
ALC : Indicates the relative ALC voltage.
PO : Indicates the average power output level.
SWR : Indicates the Standing Wave Ratio (Forward:
Reflected).
ID : Indicates the final amplifier drain current.
VDD : Indicates the final amplifier drain voltage.
[
MONI
] [
PROC
]
Knobs
[
MONI
]
Knob
The inner [ MONI
] knob adjusts the audio level of
the transmit RF monitor during transmission (rela-
tive to the AF GAIN control), when activated by
the [
MONI
] button.
[
PROC
]
Knob
The outer [ PROC
] knob sets the compression (in-
put) level of the transmitter Speech Processor in
the SSB, AM, and FM modes, when activated by
the [
PROC
] button.
A
DVICE
:
The relative compression level of the Speech Pro-
cessor will show for 3-seconds in the lower right
corner of the Main Display whenever the outer
[
PROC
] knob is turned.
Alternately, the 3-second display feature may be
changed to show in the
SUB DISPLAY-
III
win-
dow via Menu item “ 018 DISP INDI ”. Addition-
ally, you may disable the 3-second display feature
via Menu item “
017 DISP LVL IND ” See page
122 for details.
(
VFO-B
)
[
NB
] [
SQL
]
Knobs
[
NB
]
Knob
The inner [ NB
] knob adjusts the noise blanking
level when the VFO-B (analog) IF noise blanker is
activated by pressing the [
NB
] button.
[
SQL
]
Knob
The outer [ SQL
] knob sets the signal level thresh-
old at which the VFO-B receiver audio is muted, in
all modes. The squelch is very useful during local
rag-chews, to eliminate noise between incoming
transmissions. This control is normally kept fully
counter-clockwise (off), except when scanning and
during FM operation.
(
VFO-A
)
[
NB
] [
SQL
]
Knobs
[
NB
]
Knob
The inner [
NB
] knob adjusts the noise blanking
level when the VFO-A (analog) IF noise blanker is
activated by pressing the [
NB
] button.
[
SQL
]
Knob
The outer [ SQL
] knob sets the signal level thresh-
old at which the VFO-A receiver audio is muted, in
all modes. The squelch is very useful during local
rag-chews, to eliminate noise between incoming
transmissions. This control is normally kept fully
counter-clockwise (off), except when scanning and
during FM operation.