Meter
Functions
During reception, the top
"S"
scale indicates incoming
signal strength in S-units at
the left end of the scale, and
in dB above S-9 at the right
end. Each S-unit is approxi-
mately
6
dB.
Note:
While receiving, refer only to
the S-meter function: the top scale of
the meter.
While transmitting, the meter func-
tion is determined by the
METER
buttonlLEDs below it. One
of
these
is always lit (even while receiving)
to indicate the transmit function of
the meter.
The second,
"PO"
scale indicates
transmitter power output,
in
watts,
when selected by the
METER
but-
ton/LED with the same name. This
scale is calibrated to be most accu-
rate when the antenna impedance is
50-Q. Refer only to the numbers
above the scale
(0
-
150) for the
FT-890: the numbers below apply
only to special low-power versions.
1
1:5
00
ALC
The
"SWR"
scale indicates the standing wave
ratio at the antenna jack, as a ratio of forward
to
reflected power, when selected by the
METER
button1LED with the same name. A perfectly
matched antenna should give no deflection. If the
SWR is above 3, the antenna requires matching.
The bottom
"ALC"
scale indicates transmitter Automatic
Level Control voltage when selected by the
METER
but-
ton/LED with the same name. The position and movement
of the meter needle give a good indication of transmitter
performance. This meter function is important when setting
the
MIC
gain control for SSB and AM modes, and the
RF
PWR
control in CW and
FM
modes. See the Transmitting
instructions beginning on page
17.
Top
Panel
Controls
I
This 3-position slide switch activates the internal elec-
tronic CW keyer (in the
AUTO
or
WT
positions), and
selects heavy
(1:4.5) dotdash weighting in the
WT
position. In the
MAN
position, the internal keyer is dis-
abled. Keyer operation is described on page 20.
For CW operation (with or without the internal keyer) this
switch selects the type of transmitlreceive switching be-
tween code elements. Select the
FULL
position for full
break-in (QSK),
if
you want the receiver to be activated
between each dot and dash. Select the
SEMI
position
if
you
want the receiver to be activated only when you pause while
sending. Related adjustments are described on page
20.
This slide potentiometer adjusts the speed
of the internal electronic CW keyer, when
the
KEYER
switch is set to either
AUTO
or
WT
position.
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