ELECRAFT 81
Controls and Display
LCD and Bargraph Meter
The LCD shows the operating frequency and other information
depending on selected display mode. The LED bargraph functions
as an S-meter on receive, and RF out or ALC meter on transmit.
Power-Up Messages: The LCD will display E L E C R A F T for
two seconds on power-up. If a problem is detected, the display will
show I N F O 1 0 0 or a similar message. The number shown
corresponds to a paragraph in the Troubleshooting section.
Mode Indicator: A letter at the right end of the display tells you
the operating mode: C (CW), L (LSB), or U (USB). A fourth
mode, RTTY/data, can also be enabled, and uses the letter r (page
101). If a small bar appears above the C or r , it means that the
CW sideband is inverted (CW reverse or DATA reverse). The mode
indicator will also flash slowly in two cases: CW T E S T mode (see
page 93) and S P E E C H (VOX) mode (see page 95).
Annunciators: The LCD provides eight Chevron-shaped
annunciators, or status indicators:
NB noise blanker on (flashes if Low Threshold setting
is selected using
L E V E L )
ANT2 ant. 2 selected (requires ATU)
PRE pre-amp on (approx. +14 dB)
ATTN attenuator in (-10 dB)
A VFO A selected (flashes in SPLIT mode)
B VFO B selected (flashes in SPLIT mode)
RIT RIT turned on (flashes if wide range selected)
XIT XIT turned on (flashes if wide range selected)
Decimal Points: The decimal point to the right of the 1 kHz
digit will flash slowly if the VFO is locked by holding
L O C K . See
Advanced Operating Features for other cases where decimal points
flash (scanning, page 96; AGC OFF, page 97).
SPLIT/RIT/XIT LED (Optional)
You can install an LED on the front panel that will turn on
whenever SPLIT, RIT, or XIT is in effect. See the associated
application note, Adding a SPLIT/RIT/XIT LED to the K2.
Potentiometers
AF GAIN receiver audio level
RF GAIN receiver RF level
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Turning this control CCW (counter-clockwise) decreases receiver RF
sensitivity. At the same time it increases the bargraph S-meter
indication to remind you that you’re not at full receive sensitivity.
The farther CCW the control is set, the stronger a signal must be
before it results in a meter deflection.
KEYER keyer speed control
When you turn this control, keyer speed in words per minute (WPM)
will be displayed, e.g. S P D 1 8 . The speed can be set from about 9 to
50 WPM.
POWER power output control
When you turn this control, power output will be displayed in watts,
e.g. P 5 . 0 . The range is 0.1 to 15 W for the basic K2, and 1 to
100 W if you have the KPA100 amplifier installed. See Basic K2
Operation for details on controlling power output (page 90).
OFFSET RIT/XIT offset
This control provides a default range of +/- 0.6 kHz in 10 Hz steps
when
R I T and/or X I T are enabled. You can also select a wider
RIT/XIT range (see R I T menu entry, page 101).
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As in many transceivers, this control actually varies the I.F. gain.
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