ELECRAFT KX2 - VFO A and B; Tuning rates; To lock VFO A; To copy VFO As frequency to VFO B

16
VFO A and B
The KX2 provides two VFOs (see glossary, pg. 66).
Each VFO has its own frequency, mode, and filter
settings. Use of VFO B ( OFS/B) is optional.
VFO A normally controls both the receive and
transmit frequency. If you use VFO A to tune in a
signal clearly, you’ll also be on-frequency for transmit.
VFO B can serve as a holding register for a frequency
of interest (see A / B swap below). It is also used with
SPLIT (pg. 30) and Dual Watch (pg. 25). To tune
VFO B, first make sure the B LED above the knob is
lit. If not, tap the OFS/B knob.
Tuning rates: Tapping RATE normally alternates
between 10 Hz and coarse-tuning steps (MENU:VFO
CRS). The default coarse step size for CW is 0.1 kHz,
and for SSB, 0.5 kHz. In DATA modes, or when the
audio peaking filter is in use in CW mode (APF, pg.
18), RATE alternates between 1 Hz and 10 Hz steps.
OFS/B is used to tune VFO A in coarse steps.
For this purpose, the OFS LED must be lit (if not, tap
the knob), and RIT (see at right) must be turned off.
To lock VFO A: Hold FREQ for about 3 seconds. Tap
RATE to unlock. To lock VFO B, first swap it with
VFO A, lock A, then swap again.
To copy VFO A’s frequency to VFO B: Hold
A > B. Tap twice to copy mode and filter settings as
well.
VFO A and B swap: Tap A / B to exchange VFO
frequencies, modes, and all other settings.
Incremental Tuning (RIT and XIT)
RIT, or receive incremental tuning, adjusts the receive
frequency without affecting your transmit frequency.
RIT is sometimes called a clarifier since it can be used
to tune in voice signals clearly. It is also useful in CW
and DATA modes when a station calls off-frequency.
XIT, or transmit incremental tuning, adjusts the
transmit frequency without affecting the receive
frequency. (An alternative is to use SPLIT, pg. 30.)
∆ F (Delta-F) LED : This LED turns on whenever
RIT, XIT, or SPLIT is in use as a reminder that your
receive and transmit frequencies may be different.
To use RIT: First, tap RIT . This turns on the RIT
icon and the OFS LED. Adust using OFS/B .
To use XIT: XIT is controlled using MENU:XIT.
Setting the menu entry to ON turns on the XIT icon
and the OFS LED. Adjust using OFS/B .
To zero the RIT/XIT offset: Hold CLR.
You can still use the OFS/B control to tune
VFO B, even if RIT or XIT is turned on. Just tap the
knob to turn the B LED back on. The RIT/XIT icons
on the LCD will retain their current states.
Special VFO B Displays
To see special information on VFO B, tap DISP , then
rotate OFS/B. Available displays include time,
supply voltage, supply current, amp hours used, logged
text review, etc. (see pg. 23).