Hal Communications CWR6850, Instruction Manual

Page: 27 / 64

CHAPTER 4 PAGE 27
The Continental Morse Code used in the CWR6850 is shown in Table 1.
A ·-
B -···
C -·-·
D -··
E ·
F ··-·
G --·
H ····
I ··
J ·---
K -·-
L ·-··
M ––
N -·
O –––
P ·--·
Q --·-
R ·-·
S ···
T -
U ··-
V ···-
W ·--
X -··-
Y -·--
Z --·· 1 ·----
2 ··---
3 ···--
4 ····-
5 ·····
6 -····
7 --···
8 ---··
9 ----·
0 -----
. (period) ·-·-·-
, (comma) --··--
: (colon) ---···
- (dash) -····-
' (apos) ·----·
/ (slash) -··-·
" (quote) ·-··-·
? (query) ··--··
AA ·-·-
AR ·-·-·
AS ·-···
BK -···-·-
BT -···-
CL -·-··-··
HR ·····-·
KA
-·-·-
SK ···-·-
SX ···-··-
VE ···-·
error
········
NOTES:
· = one dot unit of key down time
- = one dash unit of key down time
(space) = three dot units
Element space = one dot unit
Letter space = three dot units
Word space = seven dot units
Speed in WPM = (dots/min)/25
= 2.4 dots/sec
= no. of 0's repeated in 26 seconds
(1.5 % accuracy).
AA =
@
AR =
+
(SHIFT
;
)
AS =
^
BK = ]
BT = =
(SHIFT
_
)
CL = %
(SHIFT 5)
HR = space bar
KA = [
SK = LF
SX =
$
(SHIFT
4
)
VE =
>
(SHIFT
.
)
error =
< (SHIFT
,
)
Transmitted Morse code may be monitored using the internal side-tone oscillator of the CWR6850,
adjustable with the [ VOLUME ] slide control. On the other hand, if your transmitter includes a
side-tone oscillator that you prefer to listen to, reduce the VOLUME control.
The CWR6850 has Morse key output circuits to drive either a positive or negative voltage keying
circuit. Most older tube-type transmitter circuits used grid-block or negative voltage circuits; most
solid-state transmitters use a positive voltage key circuit. Either polarity circuit may be connected
to the SW OUT - CW jack on the rear panel. A hand key or Morse code keyer (positive voltage)
may be connected to the Telegraph Key rear panel jack to manually transmit CW.
Although most modern transceivers automatically switch between receive and transmit when the
"key is pressed" (CW key line switched to ground), the SW OUT - REMOTE control signal also func-
tions in CW mode and may be used to control those transceivers requiring such a signal.
The relative "weight" of the CW transmission may be decreased with the CTRL-D command. The
normal Morse code transmitted by the CWR6850 agrees with the international standards for dot
and dash length; the time length of the dash is 3 times the time length of a dot. For most applica-
tions, this is the correct "weighting" and should be used. However, when sending high speed
Morse code, some transmitter keying circuits tend to distort the CW timing by "stretching" the time