Ssb Operation - Icom IC-730 Instruction Manual

pushing the RIT switch once the RIT circuit is turned ON
and the RIT Indicator is lit.
The receive frequency is shifted with the RIT Control knob.
When the RIT Control knob is in the "0" position, the
transmitting and receiving frequencies are the same.
Rotating the control to the (+) side raises the receiving
frequency, and rotating to the (-) side lowers the frequency.
To turn OFF the RIT control, again push and release the
RIT switch and the RIT Indicator will go OFF. When the
RIT circuit is OFF, the transmit and receive frequencies are
the same regard less of the setting of the RIT control knob.
NOTE: The RIT circuit is operational when the frequency is
locked with the dial lock switch. The frequency
shifted by turning the RIT control is not indicated on
the frequency display. When the transmitting and
receiving frequencies differ by more than 800Hz,
use "A" and "B" VFOs.
5 - 1 - 8 MEMORY/VFO WRITE SWITCH
This switch allows desired frequencies to be written into the
memories for each band, and allows either VFO's to be
brought to the exact frequency of the other VFO without
turning the tuning knob. Therefore, it is very easy to make a
few KHz split transmit/receive frequencies.
EXAMPLE:
When "A" VFO is 14.255.5MHz and "B" VFO is 14.355.0
MHz, pushing the VFO switch to select "B" VFO, then the
MEMORY/VFO WRITE Switch, "B" VFO's frequency
becomes the same as "A" VFO's (14.255.5MHz). Now the
"A" VFO's frequency is memorized in the "B" VFO, and you
can operate anywhere with "A" VFO or "B" VFO. When you
want to return to the previous frequency (14.255.5MHz),
switch back to the other VFO. It's very easy. Also, you can
make several KHz split frequency operation with "A" VFO
and "B" VFO, in a moment. To reverse this (A the same as
B), select "A" VFO first, then push the MEMORY/VFO
WRITE Switch.
5 - 1 - 9 MEMORY OPERATION
MEMORY-WRITING
Only "A" VFO can be used for memory-writing.
1. Set the TUNING CONTROL knob to the desired fre-
quency, using "A" VFO. For example, set it for
14.255.5MHz on the display (when 14MHz and USB
are selected).
2. Push the MEMORY Switch. If no frequency has been
programmed since turning the power of the unit ON,
14.098.5 (14MHz, USB) will be shown on the display
and the unit will receive on this frequency.
3. One push of the MEMORY/VFO WRITE Switch erases
the previous programmed frequency (14.098.5) and
programs the new frequency (14.255.5) into memory.
4. Program any desired frequency into memory for each
band in the same manner.
5. There is a memory for each band. The 28MHz band
consists of four segments, and there is a memory for
them. However, the memory can be used for all seg-
ments. For example, when 28.055.0 is written in the
memory, it can be used for 28.555.0, 29.055.0 and
29.555.0MHz also.
MEMORY-READING
Just push the M EMOR Y Switch. At whichever frequency
the "A" or "B" V FO was set, that previously programmed
frequency is recalled. When the M EMO R Y Switch is
pushed again and released, the previous operating
frequency of that V FO will again be shown on the display.
The programmed frequencies in the memories are main-
tained as long as the power, including MEMORY BACKUP
power, of the set is not turned OFF, or new frequency
reprogrammed. When a MEMORY BACKUP power source
is connected, all programmed frequencies in the memories
and the operating frequencies of both "A" and "B" VFO's are
retained even when the POWER Switch is turned OFF.
5 - 2

SSB OPERATION

5 - 2 - 1 RECEIVING
After connecting an antenna, microphone, etc., set k nobs
and switches as follows.
POWER SWITCH
T/R SWITCH
VOX SWITCH
NOISE BLANKER (NB)
SWITCH
AGC SWITCH
PREAMP SWITCH
VFO SWITCH
TUNING RATE
SWITCHES
MODE SWITCH
AF GAIN CONTROL
RF GAIN CONTROL
P.B. SHIFT CONTROL
BAND SWITCH
RIT CONTROL
Now turn ON the power switch. The meter lamp will be
illuminated and
FREQUENCY display (when 7MHz and LSB are selected).
In SSB operation there is both a USB (upper side band)
and an LSB (lower side band). LSB is usually used on the
3.5 and 7MHz bands, while USB is usually used on the
10MHz band and above.
Slowly turn the AF gain control clockwise to a comfortable
level. Rotate the tuning knob until a signal is received. The
meter needle will move according to the signal strength, so
tune for the highest possible meter reading and the clearest
audio. If you cannot get a clear signal, you may be receiv-
ing in the opposite sideband. If so, change the mode to the
proper sideband.
-- 13 --
OFF (OUT)
RECEIVE (OUT)
OFF (OUT)
OFF (OUT)
SLOW (OUT)
OFF (OUT)
A (OUT)
Desired Rate
USB or LSB
Completely Counterclockwise
Completely Clockwise
Center position
Desired Band
OFF or Center (12 o'clock)
position
7. 1 0 1.5
will be shown on the