Icom IC-821H Instruction Manual page 29

Split frequency operation allows you to transmit and
receive on two different frequencies (in the same
band). Split frequency operation uses 2 frequen-
cies, one in VFO A and the other in VFO B.
@ Set a receive frequency in VFO mode.
- Either VFO A or VFO B can be used.
@® Push [FUNC] then [VFO*A=B] for 2 sec.
-The undisplayed VFO contents are cleared and
equalized to the displayed frequency.
@) Push [FUNC] then [CALL*SPLIT].
-Now you can receive on the displayed VFO and
transmit on the undisplayed VFO.
"SPLIT" appears.
© Crossband full duplex
The transceiver can receive a sub band signal while
transmitting on the main band. Using this capability,
crossband full duplex operation is possible.
To prevent howling, set the volume level as low as
possible.
®© Set sub band audio to output during transmit.
- Push [SPCH*SET] for 2 sec.
- Push [SUB] twice to select "audio."
- Rotate the tuning dial to turn the sub band audio ON
(output).
Sub band audio is output while transmitting. (default)
@ Select the transmit band with the [M/S] switch.
@) Set the transmit frequency.
- Select VFO mode with the [VFO] switch.
- Rotate the tuning dial to set the transmit frequency.
RECEIVE AND TRANSMIT 4
@ To change the receive frequency, rotate the tun-
ing dial. :
©) To replace the transmit and receive frequencies,
push [VFO] to exchange VFOs.
© To change the transmit frequency, rotate the
tuning dial while pushing [CHECK].
[CHECK]
Transmit frequency (another VFO) appears and
can be adjusted.
@ Push [FUNC] then [CALL*SPLIT] to cancel.
- "SPLIT" disappears.
Cross mode communication can be performed
using the split function. (e.g. USB and CW)
@ Set the receive frequency.
- Select the sub band with the [SUB] switch.
- Select VFO mode with the [VFO] switch.
- Rotate the tuning dial to set the receive frequency.
©) Set the same frequencies, but set your sub band
as the main (transmit) band for the other trans-
ceiver.
(©) Push and hold [PTT] to operate in full duplex.
- Transmit and receive activate simultaneously.
Be sure "SPLIT," "SATL-N" or "SATL-R" do not
appear.
- To turn the split function OFF, push [FUNC] then
[CALL*SPLIT].
- To turn the satellite function OFF, push [FUNC] then
[V °REV] or [A*NOR].
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