SCS PTC-IIex, Manual

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6 Commands
to set the correct speed, then press <Ctrl-F> to keep this setting. The operation with a
fixed speed has definite advantages with weak signals, or signals with heavy fading.
The decoder withstands speed errors of 40 percent without problem, so that even with
a fixed speed setting, virtually no reading errors are found.
After switching to the CW-Terminal, on is always switched to the automatic speed
adjustment mode.
The PTC's automatic CW decoder can operate with speeds between 30 and
approximately 300 letters per minute, and scans this range within 10 seconds.
It decodes all letters from a-z
all numbers from 0-9
special characters , . : ? / - = SK# EB> AR* KN( VE+ KA!
German Umlauts ä, ö, ü or ch
All ambiguous signals are ignored.
Naturally, an automatic decoder can only decode relatively well sent Morse code signals.
One hears unfortunately much badly sent Morse on the bands (not only amateur signals!!)
where commonly the Mark/Space ratio is incorrect. One must then bear in mind that not
all CW QSO's will be correctly decoded.
The CW terminal can be closed with the
D
command, or
DD
may also be used.
6.31 CWWeight
Default setting: 50
Parameter: X 5... 95, weight of CW characters in %.
This command sets the weighting of the CW character, that is dot dash relationship,
together with dot space ratio (between character elements). Standard CW shows a ratio
between dots and spaces of 1. The dot dash relationship is 3 to 1. With
lighter CW
characters, the ratio between dot and dash length is larger than 3, and the space to dot
relationship greater than 1.
With a
CWWeight
value of 50 (%), the PTC operates with normal ratios. With values
greater than 50, the weight of the characters increase, and with smaller values, they
decrease (percentage-wise). A weight of 25 means that the dot length would be only half
that of the normal setting, the space length being respectively longer, this leading to a
space to dot ratio of 3 to 1. The speed naturally stays the same, as the complete character
length is not influenced by
CWWeight
.
The value of
CWWeight
influences the CW identification as well as the CW terminal.
6.32 CYcle
Default setting: 2
Parameter: 0 Always switching to short cycles.
1 Always switching to long cycles.
2 Adapt cycle length adaptive.
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