Yaesu FT-847 Operating Manual page 101

Hf + v-uhf all mode transceiver
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¦ If using external keyer/computer-driven keying in-
terface and odd characters are being sent, check to
ensure that FT-847's internal K
¦ If receiver recovery time is too fast or too slow,
adjust setting of Menu #9.
FM Mode
¦ Check setting of FM M
¦ Check operation of MOX or PTT switch to ensure
that the "TX" icon is appearing. See previous sug-
gestions, if not.
¦ Check setting of RF PWR control to ensure that it
is not fully counter-clockwise.
¦ If repeater cannot be accessed, ensure that any re-
quired CTCSS Encoder Tone or DCS code is prop-
erly set. Contact repeater administrator or repeater
information directory if tone data is not known.
¦ If you are reported to be slightly "off frequency,"
check to ensure that frequency is properly set
(change synthesizer channel step per page 34 if
proper frequency cannot be set using MEM/VFO
CH knob).
¦ If no repeater shift takes place, check settings of
Menu #16 (29 MHz), #17 (50 MHz), #18 (144
MHz), or #19 (430 MHz).
¦ If no Automatic Repeater Shift, check settings of
Menu #14 (144 MHz) or #15 (430 MHz).
D
Modes
ATA
¦ Check setting of RF PWR control to ensure that it
is not fully counter-clockwise.
¦ On RTTY, ensure that you do not have TNC's
"FSK" keying output (closure to ground to shift)
connected to FT-847's (AFSK) "D
(Tip of DATA IN/OUT jack).
¦ Ensure that PTT line is properly connected to FT-
847 rear-panel DATA IN/OUT or PKT jack (as ap-
propriate).
¦ Ensure that "TX A
UDIO
properly set.
¦ On FM Packet, ensure that the Baud Rate is prop-
erly set via Menu #23.
¦ On multiple-tone (SSB) Data modes, ensure that
all tones fall within IF passband. Adjust Menu #92
(USB) or #93 (LSB) if not.
C
S
:
ANNOT
CAN
¦ Be certain that Squelch is closed ("B U S Y " icon
must not be present on LCD).
¦ If using MD-1
or MD-100
C8
phones, be certain that coiled cord from microphone
base is connected to the transceiver (not the short,
straight cable).
FT-847 O
PERATING
is not On.
EYER
G
per Menu #25.
IC
AIN
I
" input pin
ATA
N
" output level from TNC is
Desk Micro-
A8X
M
ANUAL
In Case of Trouble . . .
M
C
EMORY
HANNELS
¦ Check position of BACKUP switch (see page 95)
to ensure it is On.
¦ Check condition of Backup Battery. Voltage should
be over 3V DC.
B
D
LANK
ISPLAY
E
M
RRATIC
ICROPROCESSOR
¦ Reset microprocessor using Menu #39 (see page
89).
¦ If front panel switches do not respond, ensure that
[LOCK] switch has not been pushed.
CAT
D
T
ATA
¦ Ensure that the serial data cable is a "null modem"
type, not a "straight" serial cable.
¦ Ensure that the software and computer COM port
settings are the same as the setting of Menu #37
CAT
(
System baud Rate): 4800, 9600, or 57600
bps.
¦ Ensure that any contest or logging software used
supports the FT-847, and that the "Radio Control"
protocol is enabled on the software.
T
M
QSL C
OO
ANY
B
R
EING
ECEIVED
¦ Condition normal. Thank you for choosing the FT-
847!
C
B
R
ANNOT
E
O
R
F
UNCTION
P
RANSFER
ROBLEMS
A
ARDS
RE
:
:
ECALLED
:
:
99

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