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PreppComm DMX-40 - Station Tuning and Calling CQ; Restarting the Decoder; Calling CQ Procedure; The Tuning Rule for Answering

PreppComm DMX-40
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8. When you first tune into a new station, with CW IN LED blinking, press the SPACE
bar to restart the decoder. The decoder will start collecting data, and when it has
enough, it will determine the sender’s speed and measure 5 different factors related
to the specific style of the sender’s code. The decoder will then use that information
to fully decode the captured signal, and then continue in real time.
9. Any decoded Morse Code will appear on the screen in GRAY letters. If a
transmitting station call sign is detected, it will be captured automatically, and it will
show up in place of the NO CCS (Captured Call Sign) text in the CCS Button."
10. Do not be surprised by strange decodings. If you have not tried, it is hard to focus
on sending with your hand and thinking about what is the next letter in the word, and
thinking what is the next word... Sounds easy, but It is not, although practice makes
perfect. Also, there are a lot of stations that send what appears to be gibberish.
Often it is weather or other information. Look for conversations that sound like two
or more people talking, or call CQ.
6. Calling CQ
1. If you can’t find anyone calling CQ, find a quite spot on the band to transmit. Make
sure the Green ENABLED LED is lit up. This tells you that your license allows you
to transmit on this frequency."
2. Use the CALL Button to do at least a 30 second general call."
3. Listen for at least 30 seconds to see if anyone replies. Repeat. If you get no
response after 5 or 10 calls, try longer calls. Maybe the band is dead, or your
antenna is not working properly?"
4. If someone answers, use the left-right arrow keys to adjust the frequency of the
receiver for best decoder operation (you will be in RIT Mode automatically)."
5. When they pass back to you, use the ANS Button. You are one your way!
7. The Tuning Rule: Before You Answer a CQ
Calling CQ and having someone answer you automatically means you and they are on
the same frequency. You do not have to worry about the Tuning Rule. But if you are
Page 12
Always restart the decoder when tuning in a dierent station to ensure proper
capture of the sender’s code.

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