14
Dual-Concentric Potentiometers
AF — SUB AF gain controls for main
receiver (inner, or smaller knob) and sub receiver
(outer ring, or larger knob).
RF / SQL — SUB RF gain (and/or squelch)
controls for main and sub receiver.
Two menu entries are providedto control squelch
directly: CONFIG:SQ MAIN, and SQ SUB. They
can also be used to reconfigure the RF gain controls
as squelch for either receiver. See theConfig Menu
listing for details (pg. 52).
Multi-Function Controls
The upper two multi-function controls set up
receiver filtering. The lower two controls adjust
transmit settings. Each control has two primary
functions(white labels) and a secondary function
(yellow). Tap a control knobto alternate between
its primary functions, indicated by two LEDs. Hold
a knob (~1/2 second or longer) to select its
secondary function.
Filter Controls
The primary functions of the filter controls are:
SHIF T Shift passband either direction
LO C U T Adjust low-frequency response
HI CU T Adjust high-frequency response
WID TH Adjust width of the passband
As these settings change, so does the filter graphic.
Crystal filters are selected automatically (or
manually using XFI L , pg. 15). Also see Filter
Passband Controls (pg. 23).
The secondary functionsof these controls are:
NORM Normalize passband
Normalizingthe passband setsthe bandwidth to a
fixed, per-mode value (e.g. 400 Hz in CW mode)
and centersthe passband. (Also see user-defined
normal settings, NORM1/2, pg. 24.)
I/II Select preset Ior II (per mode)
Presets I and II each hold a continuously-updated
DSP/crystal filter setup (pg. 24).
Transmit Controls
The primary functions of the transmit controls are:
SPEED Keyer speed in WPM, 8-50
MI C Mic gain
CMP Speech compression level
PWR RF output power in watts(pg. 26)
The present transmit mode determines which
primary functions normally apply; for example, in
CW mode,the SPEED / MIC control defaults to
SPEED . You can always tap a knobto override
the present selection.
The secondary functionsof these controls are:
DELAY VOX delay (voice/data) or CW semi-
break-in delay, in seconds
MON Voice or data monitor level or
CW/data sidetone level
VFO Tuning Controls
The VFO A knob controlsthe upper frequency
display. This is normally the RX andTX frequency.
In SPLIT mode, VFO B controlsthe transmit
frequency (pg. 36). VFO B also controls the sub
receiver when it is installed andturned on (pg. 37).
The controlstothe right of VFO A include:
FREQ ENT Direct frequency entry (pg. 15)
SCAN Start or stop scanning (pg. 39)
FIN E Select 1 Hz tuning for both VFOs
and RIT/XIT offset
COAR SE Select coarse tuning rate (pg. 22)
RATE Select one of two normaltuning rates
(10/50 or 10/20 Hz; pg. 22)
LOCK Lock VFO A (use B SET to lock B)
SUB Turn sub receiver on/off (pg. 37).
Holdthis switch to link/unlink VFO A
and B on the present band (pg. 37)
VFO A can optionally be coarse-tuned using
the RIT/XIT offset control if both RIT and XIT are
off . See CONFIG:VFO OFS.
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