3.2. Decoding Morse Code Signals
Having chosen a station broadcasting in Morse code,
enter the frequency as in Ch. 2.1. Select the CW mode to
receive audible signal, (pitch of tone can be fine tuned
with keys <UP> and <DOWN>). Press key <DECODE>. The
signal processor will now analyse the Morse signal and
convert it into a digital signal. The bottom line of the
display will now show CARRIER then SIGNAL and. MORSE,
After a short period the message will appear in legible
characters in the first line of the display. The number in the
top corner is the speed of characters per minute.
By pressing <PRINT> the message can be printed out and
“P” appears on the display. Should the message be stored
for later display and/ or printing, press <WRITE>.and “W”
appears in the display and <ENTER>.
Using the <DISPLAY> key you can interrupt printing as well
as storing.
3.3. Decoding RTTY Signals
Using the same procedure as in MORSE decoding, enter
the frequency chosen and select the mode <FSK>. Press
the <DECODE> key until RTTY appears in display. After a
short period, the signal processor will analyse and the
decoded message will appear on the display along with
CARRIER then SIGNAL. In the case of RTTY the speed of
transmission is shown in Baud e.g. 58 Bd.
Printing and storing of messages is analogue to that of
MORSE.
3.4. Decoding SITOR-FEC Signals
Decoding of SITOR signals is analogue to RTTY via <FSK>
mode. The safety of the transmission of SITOR signals is far
superior to that of RTTY and NAVTEX is also transmitted in
SITOR.
Printing and storing of messages, as by MORSE
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