Icom IC-820H Instruction Manual page 39

(3) External preamplifier selection "Pre"
When optional external preamplifiers (mast-mount
type), AG-25 (144 MHz) and AG-35 (430 MHz) are
connected io the transceiver's antenna connectors,
set this item according to the connected preampli-
fiers.
This setting applies DC voltage to antenna connec-
tors while receiving, therefore, the selection must be
OFF when no preamplifier is connected.
(4) CW break-in "br-In"
CW break-in function toggles transmit and receive
with CW keying. When "oFF" is selected, push
[TRANSMIT] IN to transmit manually before keying.
Adjust the [DELAY] contre! on the rear panel for
switching times from transmit to receive when break-
in is set to "ON."
(5) FM center indicator "CEntEr
When the received signal is off-center in FM mode,
the green receive indicator blinks. When you desire
no such indication, set this item to "oFF" to deac-
tivate the center indicator function.
(6) Sub band S-meter "Sub-S"
When receiving a signal on the sub band, the
S-meter in the function display shows the received
signal strength. If you do not desire S-meter indi-
cation on the sub band, it can be deactivated.
(7) Sub band audio during transmit
"Audlo"
When transmitting on the main band, the sub band's
sensitivity is decreased. At this time, sub band
audio can be muted automatically.
SETMODE 12
Dea eo
iis Wha Pre
Preamps connected to both bands (default)
4079 eee
i715, PE
Preamp connected to 144 MHz band only
,
Py af
yin 3
No preamp is connected.
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CW semi break-in (default)
—_ <w
mir
CW manual T/R switching
FM center indicator ON (default
ra
mint
FM center indicator OFF
9 SS i Ca EE EL
&
Sub band S-meter ON (default)
Bee
Sub band S-meter OFF
SUB
ot re i
rrurce as
Sub band audio is output while transmitting (default)
SUB
i
Tenby of
Sub band audio is muted while transmitting
40