Download ELECRAFT KXV3 Specifications

Advanced Operating Features
Text Decode And Display
DATA Text Decode Setup
The K3 can decode CW, PSK31 and RTTY.
Decoded text is displayed on VFO B. In data
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transmit PSK31 and RTT Y signals (pg. 34).
To set up text decode for DAT A modes:
 Set MO D E to DATA. Then hold D AT A MD
and select either AFS K A , FS K D , or P S K D
mode using VFO B. T ap AF X to exit the datamode display.
When text decode is enabled, turning the
RIT /XIT offset control does not flash the offset
value. T his would disrupt the text display.
 For AFS K A or FS K D , hold P I TC H and
select the desired mark/shift setting. T he lowest
mark tone selection (915 Hz) may be more
pleasant to listen to than higher tones. (The
pitch for P S K D mode is fixed at 1000 Hz.)
T ap S P O T to exit the pitch display.
CW Text Decode Setup
To set up CW text decode:
 Set MO D E to CW.
 Hold TE X T D E C , then select O N using VFO
B. Below the DATA icon you should now see a
T, showing that text decode is enabled.
 If a special VFO B display mode is in effect,
cancel it by tapping DI S P .
 Hold TE X T D E C , then select CW 5 -40
(lower WPM range) using VFO B. Below the
CW icon you should see a T, showing that
text decode is enabled. The TX O NLY setting
decodes only CW you send (internal keyer); the
T does not appear in this case.
 Adjust the threshold ( THR ) using VFO A. Start
with THR 0 . Higher settings prevent text
decode on weak signals or noise. Tap CW T to
exit text-decode setup.
 You
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tuning aid (pg. 34). T his also enables auto-spot
(applicable to PSK31 but not RTTY).
 Adjust the threshold ( THR ) using VFO A. Start
with AUTO . Manual settings ( 1 -3 0 ) improve
copy in many cases (see below). T ap C W T to
exit text-decode setup.
DATA Mode Te xt Decode Tips:
 Use F IN E tuning with P S K D . S P O T (or
auto-spot) a signal first, then tune slowly in 1Hz steps until recognizable words appear.
 You
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tuning aid (pg. 34). T his also enables auto-spot.
 If you call CQ using PSK31 mode, keep RIT on
so you can fine-tune responding stations
without moving your transmit frequency.
CW Text De code Tips:
 S P O T (or auto-spot) a signal first, then tune
slowly until recognizable words appear.
 In difficult conditions, reduce
WI D TH to
the per-mode minimum (typically 50 Hz for
PSK31, 200 Hz for narrow-shift RTT Y).
 In difficult conditions, reduce
WI D TH to as
low as 50 Hz (100-200 Hz for faster CW).
 To optimize text decode, use manual threshold
settings. Start with THR 5 . With CW T on,
adjust the threshold so that the CWT bar
flashes in sync with the received CW signal.
 In AFS K A and FS K A modes, the RTTY
dual-tone filter may help (DT F, pg. 32).
 RTT Y text may shift to figures due to noise.
If you assign CONFIG:TTY LTR to a
programmable function switch, you can tap it
to quickly shift back to letters.
 To decode very fast CW, use CW 3 0 -90 .
T he K3 uses slow AGC during CW text decode,
overriding the selected AGC setting.
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