Icom IC-821H Instruction Manual page 22

3° FREQUENCY SETTING
Wi Mode selection
SSB (LSB/USB), CW, CW-N (CW narrow) and FM
modes are available in the IC-821H. Select the
desired mode as follows:
e Selecting FM mode
Push [FM] to select FM mode.
- When pushing [FM] twice, duplex and tone is turned ON
simultaneously for the U.S.A. and Australia versions.
See p. 31 for setting the duplex direction.
e Selecting SSB mode
Push [SSB/CW] one or more times to select USB
mode.
- USB mode is generally used for SSB phone operation
on the VHF and UHF bands.
- Pushing [SSB/CW] sequentially selects USB, LSB, CW
and the optional CW-N mode.
W Dial lock function
The dial lock function prevents accidental changes
caused by the tuning dial (including the sub tuning
dial function).
e Push [FUNC*LOCK] for 2 sec. to activate and
cancel the dial lock function.
Even while the dial lock function is activated,
memory channel selection can be made with the
tuning dial while pushing the [MEMO] switch.
Wi Sub band OFF
The sub band can be deactivated to simplify opera-
tion.
e Push [FUNC] then [SUB*SUB OFF] to toggle the
sub band ON and OFF.
e Selecting CW mode
Push [SSB/CW] one or more times to select CW or
optional CW-N mode.
- Pushing [SSB/CW] sequentially selects USB, LSB, CW
and the optional CW-N mode.
- An optional FL-132 or FL-133 CW NARROW FILTER is
necessary to operate the CW-N mode for the main or
sub band, respectively. In the satellite mode, an
optional FL-133 is necessary to operate the CW-N mode
in the main (receive) band. No audio is output until an
optional CW narrow filter is installed in the CW-N mode.
ri VFO A
OG am 4J38200 13
"LOCK" appears.
Sub band is turned OFF.