29
FT-857 Operating Manual
F
RONT
P
ANEL
C
ONTROL
& S
WITCHES
M
ULTI
F
UNCTION
K
EY
D
ETAIL
Multi Function Row “m”
(
MFm
)
[
IPO, ATT, NAR
]
[
A
] Key:
IPO
Press the [
A
](
IPO
) key to bypass the receiver preamplifier, thereby
activating Intercept Point Optimization for improved overload char-
acteristics while operating on the HF and 50 MHz bands.
The IPO feature does not function on 144/430 MHz.
[
B
] Key:
ATT
Press the [
B
](
ATT
) key to engage the receiver front-end attenuator,
which will reduce all signals and noise by approximately 10 dB.
The ATT feature does not function on 144/430 MHz.
[
C
] Key:
NAR
Press the [
C
](
NAR
) key to select the low-deviation mode for HF FM
operation on 29 MHz.
ô
Multi Function Row “n”
(
MFn
)
[
CFIL,
– – –
,
– – –
]
[
A
] Key:
CFIL
Press the [
A
](
CFIL
) key to select the 2.4 kHz ceramic IF filter.
[
B
] Key
Press the [
B
] key to select the optional IF filter which is located on the
“FIL-1” (Optional Filter 1) slot on the Main Unit.
When an optional filter is not installed on the “FIL-1” slot, this key
function is disabled, and its label is “
N
/
A
.”
[
C
] Key
Press the [
C
] key to select the optional IF filter which is located on the
“FIL-2” (Optional Filter 2) slot on the Main Unit.
When an optional filter is not installed on the “FIL-2” slot, this key
function is disabled, and its label is “
N
/
A
.”
ô
Multi Function Row “o”
(
MFo
)
[
PLY1, PLY2, PLY3
]
[
A
] Key:
PLY1
Press the [
A
](
PLY1
) key to send the CW message which is memo-
rized in Keyer BEACON TEXT 1.
Press and hold in the [
A
](
PLY1
) key for one second to recall Menu
Mode
No-011
[
BEACON TEXT 1
]
(for stores the message for the Bea-
con).
[
B
] Key:
PLY2
Press the [
B
](
PLY2
) key to send the CW message which is memo-
rized in Keyer BEACON TEXT 2.
[
C
] Key:
PLY3
Press the [
C
](
PLY3
) key to send the CW message which is memo-
rized in Keyer BEACON TEXT 3.
ô
Ó
Ó
Ó
[
A
]
[
B
]
[
C
]
Ó
Ó
Ó
[
A
]
[
B
]
[
C
]
Ó
Ó
Ó
[
A
]
[
B
]
[
C
]
