Icom IC-821H Instruction Manual page 19

Mi Main and sub bands
The transceiver has dual bands: VHF and UHF.
These bands can be assigned to the main and sub
bands for operating convenience.
MAIN BAND
e Receive and transmit are both possible.
- Receive only when operating in satellite mode.
* Downlink frequency when operating in satellite
mode.
*CW-Narrow mode can be used when the optional
FL-132 CW NARROW FILTER is installed. In satellite
mode, an optional FL-133 is necessary because the
sub band receive unit is used for the main band in
satellite mode. (p. 51)
* Analog meter for receive S-meter and transmit power
meter.
e Low beep tone is emitted when a switch is pushed for
the main band; the beep tone can be turned OFF if
desired. (p. 45)
W Exchanging the main and
sub bands
The function display shows both the main and sub
band frequencies and both bands can receive signals
simultaneously. Assign VHF or UHF, whichever band
you want to transmit or be called on, as the main
band.
e Push [M/S] to exchange the main and sub bands.
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FREQUENCY SETTING 3
The main and sub bands each have independent
features as described below:
The display shows the VHF and UHF bands are assigned to the
main and sub bands, respectively.
1
SUB BAND
e Receive only.
- Receive and transmit are both possible when oper-
ating in satellite mode.
e Uplink frequency when operating in satellite
mode.
e The sub band can be turned OFF if desired.
e. CW-Narrow mode can be used when the optional
FL-133 CW NARROW FILTER is installed. (p. 51)
e The bar meter in the function display can be turned
OFF if desired. (p. 46)
e High beep tone is emitted when a switch is pushed for
the sub band; the beep tone can be turned OFF if
desired. (p. 45)
¢ Duplex, split and offset frequency setting cannot be
performed.
W Accessing the sub band
Frequency control, memory operation and some
functions can be operated on the sub band. You can
search the sub band while standing by on the main
band for quick response to received calls.
@) Push [SUB] to access the sub band.
- Turn the sub band ON in advance. (p. 19)
- "SUB" appears on the function display.
- You can transmit on the main band even when
accessing the sub band.
(@) Push [SUB] again to return to the main band
control.
FM
Imari
Yasue
Sub band is accessed.