Split Frequency Operation; Full Duplex Operation - Icom IC-910H Instruction Manual

n Split frequency operation
Split frequency operation allows you to transmit and
receive on two different frequencies in the same fre-
quency band. Split frequency operation uses 2 fre-
quencies, one in VFO A and the other in VFO B.
q Set a receive frequency in VFO mode.
• Either VFO A or VFO B can be used.
w Push [A=B 2] for 1 sec.
• The undisplayed VFO contents are cleared and equal-
ized to the displayed frequency.
e To change the receive frequency, rotate the tuning
dial.
USB
r To replace the transmit and receive frequencies,
push [A/B 3].
USB
t To change the transmit frequency, rotate the tuning
dial while pushing [CHECK 7].
n Full duplex operation
The MAIN and SUB bands are activated independent-
ly, therefore, simultaneous transmission and reception
in different frequency bands are possible.
q Push [M/S•BAND] to select the desired frequency
band for transmission.
• Push [V/M 1] to select VFO or memory mode, if desired.
• Push [SSB/CW] or [FM] to select the desired operating
mode.
w Rotate the tuning dial to set the desired frequency.
• Direct frequency input from the keypad is also available.
e Push [SUB] to enable the SUB band access.
• Push [M/S•BAND] for 1 sec. to select the desired fre-
quency band, if desired. (when the optional UX-910 is
installed.)
• Push [V/M 1] to select VFO or memory mode, if desired.
• Push [SSB/CW] or [FM] to select the desired operating
mode.
r Push [PTT] to transmit.
y Push [SPLIT].
• "SPLIT" indicator appears.
• Now you can receive on the displayed VFO and transmit
on the undisplayed VFO.
• To monitor the transmit frequency, push [CHECK 7].
u Push [SPLIT] to cancel the split frequency opera-
tion.
• "SPLIT" indicator disappears.
VFO A
[TRANSMIT]
VFO B
Cross mode communication can be performed using
the split function. (e.g. USB and CW)
• SUB band mute function
The SUB band mute function mutes receiving audio
from the SUB band while transmitting.
q Push [SET] then [TRANSMIT] to enter the TRANS-
MIT set mode.
w Push [DN Z] or [Y UP] to select the SUB band
mute item.
• "Audio" is displayed.
e Rotate the tuning dial to turn the SUB band mute
function ON and OFF.
• Push [M-CL 5] for 1 sec. to return to the default setting.
r Push [TRANSMIT] to exit from the TRANSMIT set
mode.
RECEIVE AND TRANSMIT
USB SPLIT
[SPLIT] [A=B 2]
5
VFO B
[A/B 3]
37