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 provided to 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, and to select FM-only
or all-mode squelch. See Config Menu (pg. 57).
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 knob to 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:
SHIFT Shift passband either direction
LO CUT Adjust low-frequency response
HI CUT Adjust high-frequency response
WIDTH Adjust width of the passband
As these settings change, so does the filter graphic.
Crystal filters are selected automatically (or
manually using XFIL, pg. 15). Also see Filter
Passband Controls (pg. 25).
The secondary functions of these controls are:
NORM Normalize passband
Normalizing the passband sets the bandwidth to a
fixed, per-mode value (e.g. 400 Hz in CW mode)
and centers the passband. (Also see user-defined
normal settings, NORM1/2, pg. 26.)
I/II Select preset I or II (per mode)
Presets I and II each hold a continuously-updated
DSP/crystal filter setup (pg. 26).
Transmit Controls
The primary functions of the transmit controls are:
SPEED Keyer speed in WPM, 8-50 (8-100
if CONFIG:CW QRQ is ON)
MIC Mic gain
CMP Speech compression level
PWR RF output power in watts (pg. 28)
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 knob to override
the present selection.
The secondary functions of these controls are:
DELAY VOX delay (voice/data) or CW semi-
break-in delay, in seconds
MON Voice or data monitor level or CW
sidetone and alert tone level
You can optionally LOCK the MIC, CMP, and
PWR control settings; see CONFIG:PWR SET.
VFO Tuning Controls
VFO A controls the upper frequency display. This
is normally the RX and TX frequency. In SPLIT
mode, VFO B controls the transmit frequency (pg.
38). VFO B also controls the sub receiver (pg. 39).
The controls to the right of VFO A include:
FREQ ENT Direct frequency entry (pg. 15)
SCAN Start or stop scanning (pg. 42)
FINE Select 1 Hz tuning for both VFOs
and RIT/XIT offset
COARSE Select coarse tuning rate (pg. 24)
RATE Select one of two normal tuning rates
(10/50 or 10/20 Hz; pg. 24)
LOCK Lock VFO A (use BSET to lock B)
SUB Turn sub receiver on/off (pg. 39)
DIV Turn diversity mode on/off (pg. 40)
To link VFO B to VFO A, set CONFIG:VFO
LNK to ON. This is not necessary in diversity
mode, where VFO A always tunes both receivers.
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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