Elecraft K3 Owner's Manual User Manual

Page 56

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.

recommended for wide filters;

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

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} =

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

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

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

= Inverted FSK transmit data polarity,

= 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 (

), main DSP (

), aux DSP

(

, if KRX3 is present), flash parameters (

), and KDVR3 controller (

KAT3

Not Inst

KAT3 ATU mode; normally set to

BYP

AUT O

(outside the menu,

A T U

alternates between the two). Modes

L1- L8

C1- C8

, and

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

and

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

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

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).