Elecraft K3 Owner's Manual User Manual
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FLx FRQ
SUB
0.00 (FL1) Crystal filter
FLx
center freq as offset from nominal (8215.0 kHz). Use the offset
value specified on the crystal filter’s label or PC board, if any. For example, if an
Elecraft 5-pole, 200-Hz filter were labeled “-0.91”, adjust VFO A for
–0. 91
.
FLx GN
SUB
0 dB
(FL1)
Crystal filter
FLx
loss compensation in dB.
0
dB
recommended for wide filters;
2
dB
for 400 or 500 Hz filters, and
4 d B
for 200 or 250 Hz filters.
FLx ON
SUB
ON (FL1),
per-mode
Used to specify which filters are available during receive. Each filter must be set
to
ON
or
OFF
in each mode. You can tap
M O D E
within the menu entry.
FLTX{md}
FL1 (all
modes)
Used to specify which crystal filter to use during TX. {md} =
CW
/
SB
/
AM
/
FM
.
Choose filters with bandwidths as follows: SSB, 2.7 or 2.8 kHz (also applies to
data); CW, 2.7 or 2.8 kHz; AM, 6 kHz; FM, 12 kHz or higher. The FM filter, if
present, must be installed in FL1.
Note: If you’re using a 2.7-kHz 5-pole filter for SSB transmit, you can optionally
fine-tune its FLx FRQ parameter to equalize LSB / USB transmit characteristics.
Monitor your signal on a separate receiver, using headphones.
FM DEV
5.0
(Advanced) FM voice deviation in kHz. Tap
1
to change the function to PL
DEV (PL tone deviation).
Note: The deviation setting for sub-audible tones (CTCSS) is separate from that
for the European standard tone (1750 Hz). Before adjusting PL DEV, select the
desired pitch with the
P IT C H
switch.
FM MODE
ON
If set to
OFF
, FM will be removed from the mode selections.
FP TEMP
N/A
Used to calibrate the front panel temperature sensor, which reads in degrees C. To
convert °F to °C, use Deg. C = (deg. F–32) * 0.555.
FSK POL
1
0
= Inverted FSK transmit data polarity,
1
= Normal data polarity. For use only
with external FSK-D keying via programs such as MMTTY. Not recommended
for CW-to-DATA use.
FW REVS
N/A
Rotate VFO A to see firmware revisions: MCU (
uC
), main DSP (
d1
), aux DSP
(
d2
, if KRX3 is present), flash parameters (
FL
), and KDVR3 controller (
dr
).
KAT3
Not Inst
KAT3 ATU mode; normally set to
BYP
or
AUT O
(outside the menu,
A T U
alternates between the two). Modes
L1- L8
,
C1- C8
, and
Ct
are used to test
KAT3 relays. Mode
LCS ET
allows manual adjustment of L/C/net settings (you
must exit the menu first). When in
LCS ET
mode, tapping
A T U T U N E
shows the
L and C values; C is changed with VFO A, L is changed with VFO B, and
A N T
toggles between
Ca
and
Ct
.
Tapping
C L R
within this menu entry clears stored LC data for the present band.
KBPF3
SUB
Not Inst
If KBPF3 option is installed: set to
NOR
, exit menu, and turn power off/on.
KDVR3
Not Inst
If KDVR3 option is installed: set to
NOR
, exit menu, and turn power off/on.
Note: Normally, playing DVR transmit messages automatically asserts PTT. To
use manual PTT with DVR transmit (via a footswitch or external sequencing
equipment), tap
1
within the KDVR3 menu entry until you see
USE PTT
.
KIO3
NOR
Determines function of BAND0-3 outputs on ACC connector. See pg. 19.
KNB3
SUB
NOR
(Troubleshooting) The K3 can’t be used without a KNB3;
Not Inst
setting is
for troubleshooting only.
KPA3
Not Inst
Set to
PA NOR
if KPA3 100-W amp installed. Set to
PAI O ON
if KPA3 is not
installed, but the KPAIO3 transition PC board is. Other settings include
PA BYP
(disables KPA3 if installed), PA fan test settings (
PA FN1
-
FN4
or
PA IO FN1 -
FN4
), and
PAI O BYP
(if transition board is installed, but not the KPA3 module,
this setting can be used to test the high power bypass relay).