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#11
October 14th 04, 03:36 AM
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In article , "Kim"
writes: "N2EY" wrote in message ... In article , (Steve In article , (Len Over 21) writes: Morse code is slower that ALL modes. "slower that ALL"?? Dug this up this morning. Goodness, it's getting hard to find anything on this newsgroup that is really worth even bothering with. "Morse code is slower than ALL modes." Hmmmm, that's a rather interesting observation. I think it would have to be determined on when and where. If there's a CW net in progress and there are not very experienced people, then it probably would be pretty darned slow--and repetitive. Kim, you are welcome to hold any belief system you wish, but the FACT that on-off-keyed "CW" morse IS the slowest communications mode in use today or in use a half century ago. I've seen it up close and personal throughout this whole past half century. It is evidenciary in the REST of the radio communications world. The slowest teleprinter rates of a half century ago was 60 WPM and, to some degree still with old, worn-out surplus teleprinters of that era. With Mark-Space shift of 170 Hz, those old, cranky 60 WPM Teletypes need less than 400 Hz of bandwidth to transmit in FSK. Those ancient machines (already around well before Jimmie was born) can run continuously at 60 WPM throughput as long as they are fed paper rolls and paper tape. I once watched over 200 such teleprinters busy, busy working continuously 24/7 in the same place on several "networks." The old electromechanical Teletypes of the 1970s can sustain 100 WPM throughput as long as the old 1940s era machines did. A modern PC can emulate either of them and go faster, having much more mass memory to store archives of network messages. It is the EXCEPTIONAL rarity now to find any two morsemen at each end of a ham radio circuit who can do SUSTAINED "network" communications by on-off-keyed "CW" morse at 40 WPM for hours. HOURS. Networks need hours if the number of messages are great. I've known a couple of speed freak morsemen who had regular QSOs along the California coast, doing bursting rates of about 60 WPM for a minute or so at a time. I took their word for it, not hearing their ham transmissions. A minute or so at a high rate of morse is not good enough for real networking, copying down and recording for later re-transmission of message content. However, under dire circumstances when, presumably, a CW net would be underway with very experienced communicators and would be the fastest, most efficient method of communication (hands down, no pun intended). For once, this is a thread wherein the real point of CW can be highlighted. CW may or may not ALWAYS be the "one mode that gets through when no other will." But, it's hard to argue that CW--if clear and done well--is the fastest and most efficient mode. Nonsense alive and well only in the imaginative fantasies of mighty macho morsemen. Real networks don't operate on imagination. "Error-free" messages don't get relayed through self-glorified boasting. The rest of the radio communications AND wire communications world learned that between a full century and a half century ago. That's why NONE of them use morse code for message communications now. All that said, I think that radiotelegraphy IS faster than the old British and French semaphore communications systems. Morse radio- telegraphy IS faster than the pony express and IS faster than paper surface mail. Radiotelegraphy does reach out farther than the human voice can transmit unaided by anything but the human body. Other than that, morse radiotelegraphy still remains the slowest mode of communications available to radio amateurs. Those who want to fantasize that morse is "faster" or "better" will have to set up a controlled test NOT in morse favor to demonstrate that alleged fact. Let all those might macho morsemen sustain 20 to 40 WPM continuously for an 8-hour period...and do the communications with LESS error than any teleprinter circuit. |
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