Editor's Recommendation: The following content is mainly ** Yu Ningsheng BA4II teacher article in District 4, and has been published with permission.
CW technology expressed in radio communication usually refers to a mode of communication based on Morse code that uses electrical keys to control the on-off and on-off of continuous wavesMorse Telegraph CommunicationsorEqual amplitude communication
Since the First World War, combat orders have been issued and transmitted through Morse codes;CW wireless communication technology has made great contributions to the victory of the war. In peacetime, it also plays an indelible role in emergency rescue and disaster relief.
Learn Xi the benefits of mastering CW skills
1.CW mode can travel all over the world with very little power. Because the equal amplitude (CW) signal is more retellable than the voice of the same power (SSB) signal, the success rate of the former long-distance communication will be much greater than that of the latter.
2.CW Tonglian uses internationally accepted English phrases and Q language to communicate CW between different countries, with almost no language barrier, and the operator is equivalent to mastering an additional foreign language.
3.CW mode communication, radio erection is fast and convenient, is an important means of emergency communication;Wenchuan University has sounded the alarm for us, and many departments have begun to pay attention to the short-wave communication and CW mode that have long been discarded, and gradually establish a short-wave earthquake-resistant rescue communication system.
4.CW communication itself is the control of the equal amplitude wave on, off, on, off, equal amplitude reporting equipment is relatively simple, easy to demodulate, easy for everyone to DIY, is the best solution for radio amateurs to learn Xi master radio electronic production technology, easy to get started, endless fun;
5.Experience has shown that people who play Morse regularly generally live a long life. When I was playing international competitions, I met many opponents who were over 90 years old. Playing CW may require agile brain activity, and benign brain stimulation greatly reduces the incidence of Alzheimer's disease.
6.For amateur radio amateurs, in addition to SSB, RTTY, SSTV and other communication modes, they have mastered an enviable operation skill.
There are several prerequisites for CW communication
1.Familiar with and master the copying and sending of Morse code. This is the most difficult for friends who are new to CW, but as long as they master the relevant learning Xi skills, they can break through through self-study and hard work Xi through hard work. There are many ways to learn Xi Morse, but generally start practicing by copying newspapers, which can be copied to about 80 yards per minute, and 10,000 groups can start practicing without errors Xi sending newspapers. The reason why I practiced copying Xi newspaper first:
Firmly establish in the brain the concept between dots and strokes (the length of time for 3 dots 'tick' is equal to the length of time for one tick');
Familiarize yourself with the time interval between codes (the interval is 3 points), and the time interval between groups (words) (the interval is 7 points);
Strengthen conditioning, learn to code;Overcoming the number and stroke of the copy method or the letter image recognition of the copy method.
2.Familiar with and memorize the Q language and English phrases commonly used by CW Tonglian
Commonly used Q language:
Common English phrases:
3.Familiar with and understand the international practices, rules and methods of CW Tonglian. Daily communication is a cliché, generally greetings, signal reports, names, weather, equipment, antennas, power, age, etc.;It's so familiar that you can get off the manuscript when you memorize it all in your brain. The daily communication terms are as follows (for your reference, it is best for everyone to have a different style, and it is good to make some modifications in the examples in the children's old books):
Call 1: CQ CQ CQ DE BA4II BA4II BA4II PSE K
Call 2: bd1wsy bd1wsy bd1wsy de ba4ii ba4ii ba4ii pse k (take calling teacher Wang Shuying as an example).
Greetings and Signal Reports after Communication:
R dr om gm es tnx vy for your call (good afternoon ga, good evening ge).
Received a dear good morning friend and thank you very much for your call.
ur rst 599 my name is yu yu
Your signal 599 and my name are Yu (twice).
my qth jinan
My location is in Jinan.
hr rig is ic-7300 my ant is dp（adverse）v abt 10m hi
Here the device is IC-7300 and my antenna is inverted v about 10 meters high.
pse ans i ur name es qth hw ?
Please answer me, what is your name and location?
pse ans i ur rig es ant hw ?
Please answer me What about your device and antenna?
my rig pwr is 25watts
My device power is 25 watts.
r dr om xxx tnk for 599 rprt
Transcript Dear friend xxx Thank you for giving me the signal report of 599.
wx hr is cloudy temp is 20 c in my home
The weather here is cloudy and the temperature is 20 degrees in my home.
fine—sunny cloudy—cloudy—foggy, snow—snow—snow, frost—freezing, minus—minus—below-zero).
nw qru hpe cuagn sn 73 to u es ur family gb dr xxx
Now nothing to hope goodbye soon 73 to you and your family goodbye darling xxx
tnx for qso hpe cuagn
Thank you for this contact and hope to see you soon.
gl to u es best dx 73 dr xxx gb
Lucky enough for you and the best DX score 73 darling xxx goodbye.
73（88） sk tu e e
73 (Ms. 88) Thank you for the end (e: the meaning of reluctance).
Transfer of presiding: hr key to u pse u call cq b
I'm handing over the key to you, please call the Chinese ham
Inform the other party of your ** number and QQ number: hr tel is xxxxxxxx hr qq is xxxxxxx
Ask for a QSL card:
A. Only shoot hair: QSL. The two sides tacitly mean to exchange cards with each other;
b. Pat hair: your QSL PSE via Buro. Please exchange your card through the card bureau;
c. Pat hair: My QTH PSE see wwwqrz.com pse qsl；Please see wwwqrz.com。Please send a card!
D. Shooting: My QSL via Po. box 6106 beijing china to u ur qsl pse via buro ；
My card will be sent to you through P.O. Box 6106 in Beijing, and your card will be sent through the Card Administration.
e. The address can be sent in English: my qth is ya zi shan lu 41 jinan city shandong China;My address: No. 41, Yanzishan Road, Jinan City, Shandong, China.
Of course, everyone doesn't necessarily follow this combination, for reference only, it is best to use the language in the book written by Tong Lao to be more formal.
4.Comply with the rules and regulations related to national amateur radio sports (omitted).
5.It is necessary to master the operation skills of CW communication related radio, antenna, antenna, power supply, and electric key, as well as be familiar with the relevant knowledge of shortwave signal astroelectric propagation.
6.Familiarize yourself with the difference between daily CW communication and competition CW communication, and understand the time, rules, and signal reporting modes of various international competitions. Participation in the contest is relatively simple, with call sign and signal reports and various parameters required for the contest. Contest Connect:
Caller call: CQ CQ de BA4II BA4II test
The called party responds to its own call sign, e.g. ba6qh qrp
After hearing it, the caller replied: BA6QH QRP599 + the area code, power, age, etc. specified in the competition.
The called party then responds: de ba6qh qrp599 + the area code, power, age, etc. specified in the competition
The caller answers and calls again: tu qrz ? de ba4ii ba4ii test
There is also a very minimalist one: the BA4II test
The call answering procedure is the same as above!
There are a few points to pay attention to when CW communicates
1.Be courteous. Before you switch to a new frequency for the first call, you should first shoot :qrl?
2.When someone else communicates, if you want to insert, you should be patient and wait for the appropriate opportunity to insert and pat :bk;
3.To keep a detailed radio log;
4.Take the initiative to send the card, hurry up and return the card;
5.When encountering a novice, the speed of the shot should be reduced;
6.In the actual CW communication, special attention should be paid to the proportion of dots and strokes in Morse code, between groups and between codes, to leave large and small intervals, and the speed should not be too fast.
In short, learning Xi and mastering CW technology requires some skills, but it is more necessary to Xi practice hard and practice hard to continuously improve and achieve positive results.