Elecraft K3 Owner's Manual - Manual (Page 59)

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RFI DET NOR NOR enables detection of high RFI at the K3’s antenna in receive mode (see HI
RFI warning, Troubleshooting). Set to OFF to disable the warning.
RIT CLR UNDO
OFF
When this parameter is set to “UNDO ON”, tapping RIT/XIT C L R will alternate
between 0.0 0 and the present RIT/XIT offset, if any.
RS232 4800 b RS232 communications rate in bits per second (bps). During firmware download
(via the K3FW PC program), the baud rate is set automatically to 38400 baud, but
it is then restored to the value selected in this menu entry.
SER NUM N/A Your K3’s serial number, e.g. 050 00 . Cannot be changed.
SIG RMV [T] NOR (Advanced) OPTIONAL SPURIOUS SIGNAL REMOVAL: Can be used to
remove fast-tuning receiver “birdies” that are audible even with an antenna
connected. (An alternative in SSB mode is to turn on auto-notch.)
Limitations: Applies only to CW/SSB/DATA modes, and only to the main
receiver. In CW and DATA modes, SIG RMV should not be used in combination
with a CONFIG:PB CTRL setting of
Shi ft=.01 .
STEPS: (1) Select the desired band (for transverter bands, use the I.F.), as well
as the desired mode. (2) Adjust the DSP controls (SHIFT/WIDTH or LO/HI
CUT) to the settings you use most often. (3) Locate a birdie to be removed. A
birdie is “fast-tuning” if a small change in the SHIFT control (e.g. 50 Hz) moves
the birdie about 400 Hz or more (with a narrow filter selected, this small shift
may move it completely out of the passband). Such birdies result from UHF
harmonics of the VFO. If you test a birdie using SHIFT, be sure to return SHIFT
to its original setting before continuing, because SHIFT affects the birdie
frequency. (4) Change the SIG RMV parameter to
0 . This saves information
about the birdie, including VFO frequency, mode, bandwidth, and SHIFT value.
(5) Try different parameter values, starting with
-1 or 1 , to see if the birdie can be
removed (shifted out of the audible passband). Each time you change the
parameter, exit the menu and see if the birdie has disappeared. (Each SIG RMV
entry applies to a single 100-Hz VFO segment, e.g. from 28135.30 to 28135.39,
so you’ll have to tune slowly through that 100-Hz range using 10-Hz steps to
make sure the birdie has been completely removed.) You may hear a slight tuning
artifact as you tune in and out of the affected VFO segment. (6) Repeat steps 3
through 5 for the adjacent 100-Hz VFO segments if required to completely
remove the birdie. (7) Repeat steps 2 through 6 for different DSP control settings
you use in the present mode. Note: If you change your CW sidetone pitch, you
may need to re-do the procedure for signals removed in CW mode.
To undo SIG RMV: If you tap C L R while you’re in the SIG RMV menu entry,
all birdie information for the present band will be permanently deleted.
SMTR OF 024 S-Meter offset; see calibration procedure (pg. 51).
SMTR SC 014 S-Meter scale. Typically set so that S-9 = 50 µ V and S-2 to S-3 = 1 µ V with
Preamp on, AGC ON, and WIDTH of 500 Hz. See calibration procedure (pg. 51).
SMTR PK OFF Set to ON for peak-reading S-meter. (Not applicable in FM mode.)
SMTR MD NOR (Advanced) S-meter mode: When set to NOR , preamp/attenuator on/off will
affect the S-meter. (The default values of SMTR OF and SMTR SC apply to
NOR .) If set to ABS , the S-meter reading will stay fairly constant with different
preamp/attenuator settings, but SMTR OF and SMTR SC must be re-aligned.
SPLT SV NO If set to YE S, S P L IT , R IT , and X IT on/off states are saved per-band.
SPKRS 1 Set to 2 if using two external speakers. This enables binaural effects in
conjunction with the A F X switch, as well as stereo dual-receive if the sub
receiver is installed. For further details on sub receiver use, see pg. 37.