telegraphy and, notoriously, a transposition, in Morse code, writing a natural human language. This means that, within the Telegraph, one might compare a manual button (see post # 2) to a mechanical typewriter, a semi-automatic key (see Post. N. 20) to a machine electric typewriter, and an automatic button (see post # 22) to a personal computer on which software to use a word processor. However, in the field of electronics has made an important leap forward: they were created devices and programs which are able to "carry" the telegraph to the transponder that are proper and modes of operation are apparently very similar to those of RTTY (: teletype).
As you know, in fact, the CW is a "way" transponder clearly defined and has its own preferred frequency bands mainly in electromagnetic waves ranging from 20 to 40 m lambda, but, to be precise, according to the National Plan Breakdown Frequenze ( http://www.associazioneradioamatoritaliani.it/images/stories/filespdf/Band-PlanOltre30MHz.pdf ), lo si può trovare un po’ ovunque, nelle varie bande di frequenza riservate ai radioamatori.
Il fondamentale problema dell’attuale morse radioamatoriale, però, è legato alla più o meno agevole trasportabilità della strumentazione la quale si fa piuttosto ingombrante volendo mantenere ad alti valori i rapporti efficienza/dimensione delle antenne ed efficienza/peso dei ricetrasmettitori. Ecco perché qualcuno, alla MFJ, ben sapendo quanto più pratiche e trasportabili siano le antenne di ridotte dimensioni installate sulle radio palmari che, però, CW mode only have to listen, has developed a special device ( http://www.mfjenterprises.com/pictures/MFJ-552.jpg ) that makes these maneggevolissimi and small devices able to transceiver "transmodality" with great clarity the pulse bit in the VHF and UHF frequency bands ( http://www.mfjenterprises.com/man/pdf/MFJ-552.pdf ), ... in speech, in fact.
This strange way of radio transmission of Morse code, even if some "horribly inappropriate," he is rather curious and study together with other colleagues who are interested in OM portability degli RTX operanti con tale sistema.
Ma il tentativo di massimo contenimento delle dimensioni di apparati ed antenne per la pratica del morse non finisce qui: altri hanno avuto idee e produzioni interessanti. EI9JQ, per esempio, ha realizzato un trasmettitore CW-sat per i 2 m ( http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=12571 ) e così anche la Kanga US ha realizzato qualcosa di interessante ( http://www.kangaus.com/Documentation%20files/2%20m%20CW%20Source%20Documentation.pdf ). Infine è da ricordare che la YAESU ha fatto davvero moltissimo, sempre in tal senso, producendo l'ultracompatto e spalleggiabile ricetrasmettitore FT-817, which has become very popular ( http://www.yaesu.it/index.aspx?m=53&did=116 ).
As for the software to use radio communications in Morse code, it should be noted that there are programs like CwGet ( http://www.dxsoft.com/micwget.htm ), capable of decoding pulses in the corresponding bit alphanumeric symbols, bringing them to monitor as if it were a teletype communication system, and programs such as CWwrite ( http://www.dxsoft.com/en/products/cwtype/ ), to transmit morse code directly from a keyboard or a paddle connected to the LPT port of a personal computer. There is even with Winkeyer Remote Control, the ability to remotely control an RTX with a local Winkeyer ( http://k1el.tripod.com/WKremote.html ) and there are also mobile decoding automatic message in Morse code (for example, the MFJ http://www.mfjenterprises.com/Product.php?productid=MFJ-461 , http://www.mfjenterprises.com / Product.php? productid = MFJ-464) or similar systems that integrate with PC laptops, such as, for example. those referred to link http://k1el.tripod.com/ , WKUSB which the kit is the subject of the photo shown at the beginning of this post.
As you know, in fact, the CW is a "way" transponder clearly defined and has its own preferred frequency bands mainly in electromagnetic waves ranging from 20 to 40 m lambda, but, to be precise, according to the National Plan Breakdown Frequenze ( http://www.associazioneradioamatoritaliani.it/images/stories/filespdf/Band-PlanOltre30MHz.pdf ), lo si può trovare un po’ ovunque, nelle varie bande di frequenza riservate ai radioamatori.
Il fondamentale problema dell’attuale morse radioamatoriale, però, è legato alla più o meno agevole trasportabilità della strumentazione la quale si fa piuttosto ingombrante volendo mantenere ad alti valori i rapporti efficienza/dimensione delle antenne ed efficienza/peso dei ricetrasmettitori. Ecco perché qualcuno, alla MFJ, ben sapendo quanto più pratiche e trasportabili siano le antenne di ridotte dimensioni installate sulle radio palmari che, però, CW mode only have to listen, has developed a special device ( http://www.mfjenterprises.com/pictures/MFJ-552.jpg ) that makes these maneggevolissimi and small devices able to transceiver "transmodality" with great clarity the pulse bit in the VHF and UHF frequency bands ( http://www.mfjenterprises.com/man/pdf/MFJ-552.pdf ), ... in speech, in fact.
This strange way of radio transmission of Morse code, even if some "horribly inappropriate," he is rather curious and study together with other colleagues who are interested in OM portability degli RTX operanti con tale sistema.
Ma il tentativo di massimo contenimento delle dimensioni di apparati ed antenne per la pratica del morse non finisce qui: altri hanno avuto idee e produzioni interessanti. EI9JQ, per esempio, ha realizzato un trasmettitore CW-sat per i 2 m ( http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=12571 ) e così anche la Kanga US ha realizzato qualcosa di interessante ( http://www.kangaus.com/Documentation%20files/2%20m%20CW%20Source%20Documentation.pdf ). Infine è da ricordare che la YAESU ha fatto davvero moltissimo, sempre in tal senso, producendo l'ultracompatto e spalleggiabile ricetrasmettitore FT-817, which has become very popular ( http://www.yaesu.it/index.aspx?m=53&did=116 ).
As for the software to use radio communications in Morse code, it should be noted that there are programs like CwGet ( http://www.dxsoft.com/micwget.htm ), capable of decoding pulses in the corresponding bit alphanumeric symbols, bringing them to monitor as if it were a teletype communication system, and programs such as CWwrite ( http://www.dxsoft.com/en/products/cwtype/ ), to transmit morse code directly from a keyboard or a paddle connected to the LPT port of a personal computer. There is even with Winkeyer Remote Control, the ability to remotely control an RTX with a local Winkeyer ( http://k1el.tripod.com/WKremote.html ) and there are also mobile decoding automatic message in Morse code (for example, the MFJ http://www.mfjenterprises.com/Product.php?productid=MFJ-461 , http://www.mfjenterprises.com / Product.php? productid = MFJ-464) or similar systems that integrate with PC laptops, such as, for example. those referred to link http://k1el.tripod.com/ , WKUSB which the kit is the subject of the photo shown at the beginning of this post.
0 comments:
Post a Comment