ICOM 301500 Manual Do Utilizador
39
4
RECEIVE AND TRANSMIT
N
When using your RTTY terminal or TNC, consult the
manual that comes with the RTTY terminal or TNC.
manual that comes with the RTTY terminal or TNC.
q Push and hold
F-INP ENT
BAND
for 1 sec., then push a
band key to select the desired band.
w Push
MODE
to select RTTY mode.
•
After RTTY mode is selected, push and hold
MODE
for
1 sec. to toggle between RTTY and RTTY-R modes.
e Rotate [DIAL] to tune in a desired signal.
•
The S-meter indicates received signal strength when
signal is received.
signal is received.
•
If the received signal cannot be demodulated, try se-
lecting RTTY-R mode (or RTTY mode).
lecting RTTY-R mode (or RTTY mode).
r Transmit a SEND signal from your TNC.
•
“
” appears.
•
The Po meter indicates the transmitted RTTY signal
strength.
strength.
t Use the connected PC or TNC (TU) to transmit
RTTY (FSK) signals.
MODE
TUNER
TS
FILTER
SPCH
V/M
A/B
SPLIT
M-CL
SCAN
SET
ATT
P.AMP
COMP
VOX
MNF
RIT
1
2
3
4
5
6
7
8
0
50
28
18
14
10
21
24
=
7
3.5
1.8
F-INP
M-CH/RIT
ENT
BAND
GENE
9
.
AGC
MW
ANF
METER
NR
NB
Band keys
[DIAL]
“RTTY” or “RTTY-R” appears.
F-INP ENT
BAND
Appears while transmitting.
D Convenient functions for receive
• Preamp and attenuator (p. 45)
± Push
± Push
P.AMP
ATT
to turn the preamp ON or OFF.
•
“
” appears when the preamp is set to ON.
± Push and hold
P.AMP
ATT
for 1 sec. to turn the attenu-
ator ON.
•
Push
P.AMP
ATT
to turn the attenuator OFF.
•
“
” appears when the attenuator is set to ON.
• Twin PBT (passband tuning) (p. 46)
±
±
• AGC (auto gain control) (p. 45)
± Push
± Push
AGC
once or twice to select the time con-
stant for the AGC circuit fast and slow.
•
“F.AGC” appears when the fast time constant is se-
lected, and no indicator appears when the slow time
constant is selected, respectively.
lected, and no indicator appears when the slow time
constant is selected, respectively.
± Push and hold
AGC
for 1 sec. to turn the AGC
function OFF.
•
“AGC-OFF” appears on the display.
• Noise blanker (p. 49)
± Push
± Push
NB
to turn the noise blanker ON or OFF.
•
“
” appears when the noise blanker is set to ON.
± Push and hold
NB
for 1 sec. to enter the noise
blanker set mode, then rotate [DIAL] to adjust the
threshold level, or the blank time.
threshold level, or the blank time.
•
Rotate
[M-CH] to select an item.
• Noise reduction (p. 50)
± Push
± Push
NR
to turn the noise reduction ON or OFF.
•
“
” appears when the noise reduction is ON.
± Push and hold
NR
for 1 sec. to enter the noise
reduction level set mode, then rotate [DIAL] to
adjust the noise reduction level.
adjust the noise reduction level.
• Manual notch filter (pgs. 51, 52)
± Push
± Push
MNF
to turn the manual notch filter ON or
OFF.
•
“
” appears when the manual notch filter is set to
ON.
± Push and hold
MNF
for 1 sec. to enter the man-
ual notch filter set mode, then rotate [DIAL] to se-
lect the filter width from narrow, middle and wide.
lect the filter width from narrow, middle and wide.
• ¼ function (p. 78)
q Push and hold
q Push and hold
M-CH/RIT
SET
for 1 sec. twice to enter
the set mode.
w Rotate [M-CH] to select “DIAL ¼”.
e Rotate [DIAL] to turn the
1
⁄
4
function ON or OFF.
r Push
M-CH/RIT
SET
to exit the set mode and return to
normal operation.