CW
50
CW Mode
KAM
only
Several parameters can be set for the default values you would like to use when entering the CW
Mode operation. These parameters and their factory default are listed here for your reference:
CWBand 200
CWSpeed 25
CWTone 750
PROsign $5C
If you want to change any of these, simply type the command name followed by the new value
you wish to use for your default (e.g.
CWS 30
). Then you should PERM these changes to save
them so the
KAM
will remember them the next time you turn the power on. The CWBAND com-
mand will set the audio bandwidth (in Hertz) for the CW filtering. The CWTONE command sets the
center frequency in the CWBAND for the audio tone. CWSPEED controls the default receive speed
used if you enter the CW Mode with no optional speed specified. The PROSIGN command defines
the character used as a "lead in", to indicate that the next two characters are to be combined as a
PROSIGN.
To enter the CW operating mode of the
KAM
, type
CW
at the
cmd:
prompt. This will place the
KAM
into receive mode at the default speed. If you desire to enter CW Mode at a different speed,
just use the command
CW
nn
– where
nn
is the speed (5–99) that you desire. The
KAM
will at-
tempt to lock to the speed of the incoming CW signal, but in order for this to operate quickly, the
KAM
must be set to within 20 WPM of the received signal speed.
After you enter the CW command, your screen will display the current transmit and receive speed:
-25-25-
This indicates, that you are set to send and receive at 25 words per minute. Now tune in the sta-
tion you wish to receive. You should tune SLOWLY and watch the bargraph tuning indicator on the
KAM
. When the station is properly tuned, the bargraph should deflect fully to the right. Tuning will
depend on several factors, including receiver stability, internal filtering in your receiver, the
CWBAND setting of your
KAM
(audio bandwidth) and the speed with which you turn the receiver
tuning dial. The most common problem encountered in tuning CW with the
KAM
, is moving the
tuning dial too quickly for the
KAM
to indicate full deflection. Once you have tuned to a station,
the
KAM
will track the receive speed. You can lock your transmit speed to that of the received sig-
nal by entering a
Ctrl-C L
directive (hold the
control key
and press
C
, then release both keys, then
type the letter
L
). To unlock the
KAM
transmit speed and allow the
KAM
to further track the incom-
ing signal speed, type a
Ctrl-C U
directive. You may use the
Ctrl-C U
directive at any time to see
the current transmit and receive speed.
While in the CW Mode, you may wish to change the speed setting for transmit and receive. This
can be accomplished by using the
Ctrl-C
n
directive. The chart below shows the n selected and the
speed which will be used:
n
Speed
n
Speed
1
5 wpm
6
30 wpm
2
10 wpm
7
35 wpm
3
15 wpm
8
40 wpm
4
20 wpm
9
45 wpm
5
25 wpm
0
50 wpm
