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O
PERATION
Keyer Settings
Keyer Dot & Dash Weighting - menu selections 7-
1 and 7-2 adjust the Dot:Space and Dash:Space weight-
ing. Default values are "10" (1:1) for Dot:Space, and
"30" (3:1) for Dash:Space.
Keyer Delay - For "semi-break-in" (non-QSK) CW
operation, the switchover time delay from Tx to Rx can
be adjusted from 0 seconds (full break-in) to 5.10 sec-
onds (in 10-msec) using menu selection 7-5. Note that
this provides a separate "hang time" adjustment from
the "VOX Delay" setting used during voice operation.
CW Break-In - The switching time of the CW car-
rier waveform can be adjusted from 0 to 30 millisec-
onds for use with linear amplifiers with T/R switching
circuits not designed for full-QSK operation. This fea-
ture provides a programmable delay in the total CW
envelope character string,not a simple truncation of the
first character. Menu selection 7-4 controls the time de-
lay. See also "Linear Amplifier Operation" on page
12 for more details.
CW Pitch Setting and Spot Tone
In the CW mode (only), pressing the [ SPOT ] switch
on the lower edge of the front panel activates the CW
sidetone, which is also used as a spotting oscillator.
The frequency of this tone is also (exactly) the fre-
quency at which your transmitted signal will appear
r e l a t i v e t o
SPOT
BK-IN KEYER
that of the
incoming sig-
nal.
Therefore, if you match the pitch of the SPOT
oscillator's tone to the pitch of an incoming signal, you
will be exactly "zero beat" with that station's CW sig-
nal. In a DX pile-up situation, you can match your
Page 56
T
RANSMITTING
transceiver's SPOT tone with that of the station being
worked by the DX station, so as to be "next in line" on
the same frequency. This SPOT signal is centered in
the receiver section's IF passband, as well, which en-
sures that you will not lose track of his signal when
switching to a narrower filter. Of course, you must turn
off the [ SPOT ] switch once frequency alignment has
been completed.
50-Hz increments) to match your personal operating
preference. The CW Pitch feature adjusts the amount
of offset from "zero beat" of your CW carrier, as well as
the corresponding pitch of the CW SPOT tone; it also
adjusts the center frequency of the receiver's IF pass-
band, so as to be aligned with the other offset param-
eters just mentioned. The CW Pitch may also be ad-
justed to match that used by popular TNC (Terminal
Node Controller) units and other CW decoders. While
adjusting the pitch, you can have the frequency shown
in the Clarifier sub-display by enabling it via menu se-
lection 3-5.
it), press the [ SPOT ] switch, then rotate the PITCH con-
trol to set the tone to the pitch you prefer, or that used
by your TNC or CW decoder. If the sub display is en-
abled for indication of the CW pitch, you can view the
pitch frequency as you adjust it. The SPOT tone vol-
ume can be adjusted using the SIDETONE potentiom-
SPEED
PITCH
eter, accessible on the rear panel of the transceiver).
tuning meter provides a constant visual indication of
any signal at the center of the IF passband (if not too
weak). You can just tune so that the segment flashes
in sync with the signal of interest when it is centered
(see page 41).
The CW pitch can be set from 300 ~ 1050 Hz (in
To adjust the CW pitch (and SPOT tone along with
In addition to the spotting oscillator, the directional
O
M
PERATING
ANUAL
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