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#71
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Is the code requirement really keeping good people out of ham radio?
"an old friend" wrote in message ups.com... U-Know-Who wrote: " Next lesson is punctuation, Goofball. It is required. you lack the power to require anything of me you also lack the intelegence to understand that fact and you lack any manners I ivtie you into to my world andwhat do I get instaed of thanks you I get your puting my loosey spelling on the same plan as Robesons death threats and both of accusing me of child moletsing one day maybe you will grow up and get a life but I doubt as you nick tells you are nameless loser: your wting shows you to be frustrated school marm type Oh my! You (ivtie) me into your world? No thanks. I'll pass on that one, good buddy. (loosey) spelling? You are hilarious in your futile crappie flopping around all subjects. Well, all except your sexual deviations and disgraceful use of beer. You seem to love talking about both. Now, when I "grow up and get a life", does that mean I have to engage in sex with men and douche my ass with beer as you do? I'll pass. |
#72
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Jimmie the "Historian" of Personal Computing
From: on Tues, Oct 3 2006 3:25 pm
wrote: From: Nada Tapu on Sat, Sep 30 2006 2:23 pm On Fri, 29 Sep 2006 20:56:08 -0400, wrote: The ready-built Personal Computer first appeared in 1976, 30 years ago (the "IBM PC" debuted in 1980, 26 years ago). The Internet went public in 1991, 15 years ago. Basically true, but that's not the whole story by any means. I wrote a chronological synopsis. If you need more material, you can crib from Robert X. Cringely and/or dozens of others. If you need a "whole story" then WRITE one and get it published. You are the self-styled knowitall "expert" who tells everyone else what to write correctly and not correctly, what to like and not like. You know everything, yes? Of course you do...you are a code- tested amateur extra. Until rather recently, personal computers were rather expensive. Define "recently." The prices for complete personal computer systems, components have been constantly dropping since the beginning of 1982. Five years ago a complete PC sold for $500 plus tax at Lowes near Gig Harbor, Washington. Hewlett-Packard brand no less! :-) Complete PCs - and laptop portables - can be purchased today at Fry's on the west coast for $500; go to www.outpost.com to see their mail-order products. The IBM PC (introduced in August 1981) cost over $1500 in its basic configuration - which works out to about $3500 in 2006 dollars for a machine with very limited capabilities. The IBM representative showing off their PC at Rocketdyne in early 1982 was NOT taking orders in "2006 dollars." The Treasury Departement would have arrested both reps and IBM Corporation had they done so. "Limited capabilities?" Only by today's standard. In the early 1980s the first IBM PCs were the EQUAL in power of any 16-bit minicomputer then on the market. Try to keep your time frame focussed. And cite your hands-on experience with either designing, building, or using minicomputers for a comparison. Feel free to indulge everyone on your 64-bit mainframe computer expertise. As recently as 10 years ago, a complete PC system with reasonable performance cost over $2000 - and its depreciation curve was very steep. You did not do any "dumpster diving" for parts to build your own PC? Why not? Can't you build a functional IBM PC clone for just $100 in parts? Do you think you need morse code skills to program computer code? I know a few folks who have built whole new PC-compatible computers for LESS than $250 in parts cost. Three years ago. "The internet" was originally rather limited and not simple to access for the non-technically minded. That's all changed now. Neither the Internet ("world wide web") nor commands for browsers accessing the Internet have changed in 15 years. Define "technically minded." Did PC users need university degrees to access the world wide web? I don't think so. On top of all this is the evolution of the PC from an expensive techno-toy to an everyday tool in most workplaces, schools, and homes. "Computer literacy" is now *expected* in most jobs. Jailhouse guards, housewives, nannies don't need "computer literacy." They can all be amateur radio licensees, though. The synergy of low cost, easy-to-use computers, easy and fast online access, and a reasonably computer-literate public has only come together within the past 10 years. Yawn. Robert X. Cringely you are NOT. :-) Why are you trying to tell me what to believe and not believe? Why do you think YOUR "computer history" is "more accurate" than mine? Have you built ANY personal computer from scratch? No? I have. Two of them, in fact. It was fun to do so for me. Why are you trying to tell me what I "should" be having fun with? You are not a member of the IEEE, a Professional Association. I am a Life Member of the IEEE. Are you or have you ever been a voting member of the ACM (Association for Computing Machinery)? I have. [got the stupid T-shirt "Dragon in a Member" slogan on the front...but it was free...shrug] Why are you always telling me what to like, not like, enjoy, not enjoy, what to post, what not to post? What is wrong with live and let live? |
#73
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Part A, Is the code requirement really keeping good people out?
From: on Tues, Oct 3 2006 3:25 pm
wrote: From: Nada Tapu on Sat, Sep 30 2006 2:23 pm But you have never been "IN" amateur radio, Len. Tsk, that old ploy once again... Now, now, calm down, Jimmie. You have NEVER been IN the military yet you have NO reservations about telling all the military and its veterans what to do, how they should do it, how "wrong" they were in not doing it as you said it should be done. Amateur radio "differs" from other radio services only in man-made regulations and the fantasies of its licensees. There is NO DIFFERENCE in the basic physical laws governing radio or radio waves versus all other radio services. Electrons, EM fields and waves follow THEIR rules, not the imaginations of the ARRL and its members...or the legislations of human law-makers. If Miccolis' logic is "correct" in who is able to talk about, govern, regulate, etc. amateur radio, then the very first amateur licensee and the very first radio regulating agency have been ILLEGAL from the start. Id est, the unlicensed would NOT have been IN amateur radio, therefore they could not do anything. You see the fallacy of your argument? [you wouldn't admit it if it came up and bit your butt] Your "IN" argument in reference to amateur radio is therefore not only incorrect, it is nonsense. You wish to quibble word definitions in order to score message points and thereby show your alleged superiority? Id est, one must be "IN" amateur radio in order to "do" something about it. Nonsense. In regulations that is also fallacious. None at the FCC need be licensed "IN" the amateur radio service in order to REGULATE it or any US civil radio service. NONE. Not the Commissioners, not any of the staff. Tsk, tsk, you do not negatively criticize the FCC yet they are NOT "IN" US amateur radio. Why is that? Under the Constitution of the United States, citizens may freely express their desires to the government of the United States. [the formal wording is "petition the government for the redress of their grievances"] That includes ALL laws, legislation thereof, regulations and rules imposed by the government. Yet YOU wish to exclude the nearly 299 million citizens who are NOT amateur radio licensees (your definition of being "IN" amateur radio is being granted that license) from doing anything at all except obeyance of YOUR desires and ONLY those of other amateur licensees. That is dictatorial, totalitarianism, and general bull**** 'territory' thinking that is akin to some neighborhood street gang. You do not "own" amateur radio nor do you have ANY qualifications to "rule" on it. You've NEVER been IN any government regulating agency, indeed never been IN government, yet you wish to exclude millions just on YOUR "definition" of who can say what and to whom. |
#74
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Part B, Is the code requirement really keeping good people out?
From: on Tues, Oct 3 2006 3:25 pm
wrote: From: Nada Tapu on Sat, Sep 30 2006 2:23 pm On Fri, 29 Sep 2006 20:56:08 -0400, wrote: Manual radiotelegraphy was a MUST to use early radio as a communications medium. The technology of early radio was primitive, simple, and not yet developed. On-off keying was the ONLY practical way to make it possible to communicate. Yet some pioneers (like Reginald Fessenden) were using voice communication as early as 1900, and had practical lomg-distance radiotelephony by 1906. "PRACTICAL?!?" What is "PRACTICAL" about inserting a single carbon microphone in series with the antenna lead-in to 'brute force' modulate a CW carrier?!? You have never 'ridden gain' in broadcasting at an audio control board to make "PRACTICAL" audio broadcasting, yet you DEFINE "practicality" in such things as inserting a single carbon microphone in series with the antenna for broadcasting. For a double-degreed education in things electrical you just displayed a surprising amount of ILL logic and definite misunderstanding of the real definition of "practical." AM broadcasting was a reality by 1920. Superfluous minutae. YOU have NEVER been IN broadcasting. Your amateur radio license does NOT permit broadcasting. I have been IN broadcasting, still have the license (now lifetime). NO, repeat NO amplitude-modulation broadcaster uses your so-called "practical" means of modulating a CW carrier. NONE. Had Fessenden's EXPERIMENT been at all practical, others would have used that technique. NONE did. Morse code was then already mature and a new branch of communications was open to use by downsized landline telegraphers. While some radio operators came from the ranks of landline telegraph operators, most did not, as it was predominantly young men who pioneered radio in the early part of the 20th century. PR bull**** you fantasize. You were NOT among the "pioneers of radio" and you have NO demographics to prove the ages, let alone a poll or listing showing that. All you have is some bowdlerized, very edited versions of radio history from the ARRL. Here's a plain and simple fact: Landline telegraphy was already changing from manual to teleprinter by the year 1900. That changeover continued until the middle of the 1900s until ALL the landline telegraph circuits were either shut down or replaced by electromechanical teleprinters. The Morse Code used on landlines was "American" Morse, while that used on radio after 1906 was predominantly "International" or "Continental" Morse. Superfluous minutae. Manual telegraphy consisted of closing and opening a circuit. That has never changed. There are dozens, if not hundreds, of different versions of on-off telegraphy which have been developed, NONE of them modeled on either "International" or "Continental" AMERICAN morse code or any English-language representation. |
#75
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Is the code requirement really keeping good people out of ham radio?
From: on Tues, Oct 3 2006 3:25 pm
wrote: From: Nada Tapu on Sat, Sep 30 2006 2:23 pm On Fri, 29 Sep 2006 20:56:08 -0400, wrote: Amateur radio is the ONLY radio service still using morse radiotelegraphy for communications purposes. So what? Amateurs choose the mode they want to use. What is wrong with choosing Morse Code and HF operation? Now, now, Jimmie, you are assigning some "blame" on a plain and simple factual statement: "Amateur radio is the ONLY [US] radio service still using morse radiotelegraphy for communications purposes." What I wrote is a plain and simple fact. You seem to be in denial, unable to accept a plain and simple fact. Your problem, not mine. Some may say the Morse Code *test* is outmoded. But you are saying the *use* of Morse Code is outmoded! Yes, in every other radio service except amateur. You seem to be in denial, unable to accept a plain and simple fact. Your problem, not mine. FM broadcasting is the only radio service that uses stereo multiplex FM - is it outmoded? There is NO SUCH THING as "stereo multiplex FM" mode. FM broadcasting is NOT the "only radio service" using stereophonic audio modulation. Stereophonic audio modulation is NOT required by FM band broadcasters. Those broadcasters MAY use stereophonic audio OR they may use monophonic audio plus a SUBCARRIER separate audio channel OR they may use stereophonic audio PLUS the subcarrier audio. The term "multiplex" applies to SEPARATE information sources, not stereophonic audio. All of that is very much in use today. DTV (Digital TeleVision) broadcasting carries QUADRAPHONIC audio (optional, may be monophonic or stereophonic) with or without extra separate audio subchannels, with or without audio text ("Teletext") accompanying the video. That is very much in use today and for the foreseeable future of American TV broadcasting. Some AM broadcasters are still using the Motorola C-QUAM system for stereophonic broadcasting where each stereo "channel" takes one of the two DSB sidebands. While that system works well, the AM broadcasting listener market has NOT received it well enough to warrant more than a few broadcasters adopting it or any similar AM stereophonic system. It appears to be on the way out due to listener non-acceptance. "Shortwave" broadcasting is still "testing" Radio Mondial system which is capable of stereophonic audio transmission. Technically the system works very well. The increased cost of receivers and the general downturn in world interest in "shortwave" broadcasting might result in a future discontinuance. Note: What was once "shortwave" radio broadcasting is increasingly shifting over to satellite relay and VoIP dissemination rather than maintaining the HF transmitters; program content remains the same. The International Civil Airways VOR (Very high frequency Omnidirectional radio Range) system ground stations ALWAYS broadcast with a subcarrier (9.96 KHz) that is FMed with the reference magnetic azimuth bearing phase. The RF output is amplitude modulated with 30% AM so that any receiver can determine its magnetic bearing to the ground station by comparing the demodulated reference phase with the main AM phase. Relatively simple receiver demod that was devised in vacuum tube architecture times. In use since 1955 worldwide, no foreseeable discontinuance in the future despite wider use of GPS. Multi-channel (many "multis") using FM was once the choice of trans-continental microwave radio relay, the linkage across the USA that made national TV and 'dial-anywhere' long distance telephony possible. It has been largely replaced by optical fiber relay using digital multiplexing of voice and TV channels using digital modulation of laser light. The longest (to date) fiber-optic relay is the long, long like between London and Tokyo through the Mediterranean Sea past Saudi Arabia, India, around southeast Asia, past the Phillippines. Most of it under water. Optical "pumping" with a second optical wave- length is used for amplification to avoid electronic repeater amplifiers. Such optical pumping (amplification) is not possible with microwave RF radio relay. There are many different other examples of "FM"-like modulations at work daily in HF and on up into the micro- waves. The most common is the various adaptations of the common dial-up modem using combinatorial amplitude and phase modulation of an audio carrier wave. Those are the "TORs" (Teleprinter Over Radio) used for data communications in maritime service; voice is done via SSB and may be simultaneous with the data. This is on-going in use and for the foreseeable future. The FIRST HF Single Sideband circuits (since the beginning of the 1930s) used combinatorial modulations. The 12 KHz bandwidth was composed of four 3 KHz wide separate one-way channels. Each 3 KHz (voice bandwidth) channel could carry up to 6 frequency-shift-modulated teleprinter channels. The common arrangement worldwide (by both commercial and government users) was to use two 3 KHz channels solely for voice/telephony and the remaining two for 8 to 12 TTY circuits (number dependent on the redundancy required to overcome selective fading). While those "commercial" SSB circuits were numerous from the 40s on into the 70s, their number has dwindled due to better throughput and reliability from satellite radio relay services. Was there anything else technical about communications and/or broadcasting that you wanted to erroneously state? |
#76
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Part C, Is the code requirement really keeping good people out?
From: on Tues, Oct 3 2006 3:25 pm
wrote: From: Nada Tapu on Sat, Sep 30 2006 2:23 pm On Fri, 29 Sep 2006 20:56:08 -0400, wrote: Amateur radio is the ONLY radio service still using morse radiotelegraphy for communications purposes. So what? Amateurs choose the mode they want to use. What is wrong with choosing Morse Code and HF operation? Now, now, Jimmie, you are assigning some "blame" on a plain and simple factual statement: "Amateur radio is the ONLY [US] radio service still using morse radiotelegraphy for communications purposes." What I wrote is a plain and simple fact. You seem to be in denial, unable to accept a plain and simple fact. Your problem, not mine. Some may say the Morse Code *test* is outmoded. But you are saying the *use* of Morse Code is outmoded! Yes, in every other radio service except amateur. You seem to be in denial, unable to accept a plain and simple fact. Your problem, not mine. FM broadcasting is the only radio service that uses stereo multiplex FM - is it outmoded? There is NO SUCH THING as "stereo multiplex FM" mode. FM broadcasting is NOT the "only radio service" using stereophonic audio modulation. Stereophonic audio modulation is NOT required by FM band broadcasters. Those broadcasters MAY use stereophonic audio OR they may use monophonic audio plus a SUBCARRIER separate audio channel OR they may use stereophonic audio PLUS the subcarrier audio. The term "multiplex" applies to SEPARATE information sources, not stereophonic audio. All of that is very much in use today. DTV (Digital TeleVision) broadcasting carries QUADRAPHONIC audio (optional, may be monophonic or stereophonic) with or without extra separate audio subchannels, with or without audio text ("Teletext") accompanying the video. That is very much in use today and for the foreseeable future of American TV broadcasting. Some AM broadcasters are still using the Motorola C-QUAM system for stereophonic broadcasting where each stereo "channel" takes one of the two DSB sidebands. While that system works well, the AM broadcasting listener market has NOT received it well enough to warrant more than a few broadcasters adopting it or any similar AM stereophonic system. It appears to be on the way out due to listener non-acceptance. "Shortwave" broadcasting is still "testing" Radio Mondial system which is capable of stereophonic audio transmission. Technically the system works very well. The increased cost of receivers and the general downturn in world interest in "shortwave" broadcasting might result in a future discontinuance. Note: What was once "shortwave" radio broadcasting is increasingly shifting over to satellite relay and VoIP dissemination rather than maintaining the HF transmitters; program content remains the same. The International Civil Airways VOR (Very high frequency Omnidirectional radio Range) system ground stations ALWAYS broadcast with a subcarrier (9.96 KHz) that is FMed with the reference magnetic azimuth bearing phase. The RF output is amplitude modulated with 30% AM so that any receiver can determine its magnetic bearing to the ground station by comparing the demodulated reference phase with the main AM phase. Relatively simple receiver demod that was devised in vacuum tube architecture times. In use since 1955 worldwide, no foreseeable discontinuance in the future despite wider use of GPS. Multi-channel (many "multis") using FM was once the choice of trans-continental microwave radio relay, the linkage across the USA that made national TV and 'dial-anywhere' long distance telephony possible. It has been largely replaced by optical fiber relay using digital multiplexing of voice and TV channels using digital modulation of laser light. The longest (to date) fiber-optic relay is the long, long like between London and Tokyo through the Mediterranean Sea past Saudi Arabia, India, around southeast Asia, past the Phillippines. Most of it under water. Optical "pumping" with a second optical wave- length is used for amplification to avoid electronic repeater amplifiers. Such optical pumping (amplification) is not possible with microwave RF radio relay. There are many different other examples of "FM"-like modulations at work daily in HF and on up into the micro- waves. The most common is the various adaptations of the common dial-up modem using combinatorial amplitude and phase modulation of an audio carrier wave. Those are the "TORs" (Teleprinter Over Radio) used for data communications in maritime service; voice is done via SSB and may be simultaneous with the data. This is on-going in use and for the foreseeable future. The FIRST HF Single Sideband circuits (since the beginning of the 1930s) used combinatorial modulations. The 12 KHz bandwidth was composed of four 3 KHz wide separate one-way channels. Each 3 KHz (voice bandwidth) channel could carry up to 6 frequency-shift-modulated teleprinter channels. The common arrangement worldwide (by both commercial and government users) was to use two 3 KHz channels solely for voice/telephony and the remaining two for 8 to 12 TTY circuits (number dependent on the redundancy required to overcome selective fading). While those "commercial" SSB circuits were numerous from the 40s on into the 70s, their number has dwindled due to better throughput and reliability from satellite radio relay services. Was there anything else technical about communications and/or broadcasting that you wanted to erroneously state? |
#77
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Part D, Is the code requirement really keeping good people out?
From: on Tues, Oct 3 2006 3:25 pm
wrote: From: Nada Tapu on Sat, Sep 30 2006 2:23 pm On Fri, 29 Sep 2006 20:56:08 -0400, wrote: Another thing outmoded is the strict "necessity" to use a formalism in "procedure" AS IF it was "professional" radio. That formalism was established between 50 to 70 years ago. What "formalism" do you mean, Len? 1. The "official" 'Radiogram' form sold by the ARRL for use in "official" message relay by amateurs. Obvious play-acting AS IF the amateur relay was by "official" means a la Western Union or similar REAL telegraphic message. :-) 2. The monotonic HI HI HI on voice to denote a 'laugh.' Done with little or no inflection and hardly normal to genuine laughter. [jargon from telegraphic shorthand where inflection and tonality of real laughter is not possible] 3. Gratuitous signal level and readability "reports" to other stations AS IF they were solidly received when they are not. 4. Carrying over many, many "Q" code three-letter shorthands from telegraphy on voice where the plain words would have worked just as well. Jargon use has the appearance of being a "professional" service but it is just jargon, a juxtaposition of short-hand used in different modes. 5. The seeming inability to express anything but in a flat monotone on voice, despite the subject (if any) under discussion. Most of the time such voice contacts seem devoid of the transmitting operator's ability to convey any emotion beyond boredom. 6. The over-use of call signs instead of legal names in non-radio conversation, communication, and image displays...AS IF the license grantee were a REAL radio station or radio broadcaster. 7. The non-radio self-definition of a licensee as being "federally authorized radio station (or operator or both)." Elevation of self-importance beyond what the amateur radio license GRANT is about. 8. The non-acceptance of the word "hobby" for the real activity of radio amateurs AS IF they were somehow a national service to the country. 9. The falsity of redefining the word "service" (amateur radio service, were 'service' means a type and kind of radio activity of all) into that "national service" akin to anything from a para-military occupation to an important "resource" that would always "save the day when all other infrastructure communications services 'failed'." 10. The falsity of assuming that amateur radio is PRIMARILY an "emergency" communications resource. Regardless of the pomposity of many self-righteous amateurs and thousands of words and redefinitions written, the amateur radio service is still an avocational radio activity done for personal pleasure WITHOUT pecuniary compensation. Amateur radio is among the least formal radio services I know. Besides listening-only to radio broadcasting service, what DO you "know" about OTHER radio services? You know NOTHING of military radio. You never served, never worked with the military. I did both as a soldier and as a civilian. You know NOTHING about any form of broadcasting from the transmitting end or even studio/location procedures and technology. I've been involved with broadcasting at the station end since 1956. You know NOTHING of Public Land Mobile Radio Services, never had one. I did. You know NOTHING of Aircraft Radio Service, protocal or procedures, or of actual air-air or air-ground comms. I've done that, both air-air and air-ground. You know NOTHING of Maritime Radio Service, what goes on and what is used. I've used it on the water, both in harbors and inland waterways. You MIGHT know something of Citizens Band Radio Service. CBers out-number amateurs by at least 4:1, could be twice that. I've been doing that since 1959. You MIGHT know something about Personal Communications Radio Services other than CB (R-C is not strictly a communications mode, it is tele-command)...such as a cellular telephone. No "call letters," "Q" codes, or radiotelegraphy are used with cell phones. One in three Americans has one. Do you have one. I do. Too many olde-tymers want to PRETEND they are pros in front of their ham rigs. Not true, Len. We're amateurs Don't you forget it. And a license to use a good chunk of that spectrum has been available without a Morse Code test for more than 15 years. But you have not taken advanatage of it. I have USED my COMMERCIAL radio operator license to operate on FAR MORE EM SPECTRUM than is allocated to amateurs. LEGAL operation. In most cases of such work NO license was required by the contracting government agency. [the FCC regulates only CIVIL radio services in the USA, NOT the government's use] When did YOU "legally" operate below 500 KHz? Have you EVER operated on frequencies in the microwave region? [other than causing 2.4 GHz EMI from your microwave oven] Have you transmitted ANY RF energy as high as 25 GHz? I have transmitted RF from below LF to 25 GHz. I have done that since 1953...53 years ago. What would you have me "take advantage of" in "good chunks" of the EM spectrum? "Work DX at 10 GHz?!?" :-) :-) :-) I've once "worked" 250,000 miles (approximately) "DX" with a far-away station above 2 GHz but below 10 GHz. What have YOU done above 3/4 meters? READ about it? Oh, yes, now you are going to "reply" with the standard ruler-spank that I did not do that with "my own" equipment. :-) Well, now YOU have a quandry. To use that stock "reply" of yours you MUST define that the "taxpayer SUBSIDIZES" anything of the government or contracted work by the government. In your "logic" then, I really DO "own" that equipment! But, if you say I don't then you have to take back your INSULT to all military servicemen and servicewomen that they "receive a SUBSIDY from the taxpayer." I will NOT "own that equipment" if you take that insult back. YOU don't think your remark was an "insult." You've tried to rationalize your way out of that three ways from Sunday since. Well then, I "do" "own" that equipment and did get experience using "my own" equipment! It has exciting possibilities...except for the rutted and mired olde-tymers unable to keep up with new things, secure in their own dreams of youth and simple technological environment. Do you have a problem with youth, Len? Or simplicity? Other than NOT ENOUGH of either, NO. YOU are NOT young, Jimmie. Face it. You've hit the halfway mark and are downhill all the way since. YOU are MIDDLE-AGED, growing older. YOU never "pioneered radio" in your life. All you did was try to fit in to the present...and then rationalized by implication that you somehow did some "pioneering." You imply that you are "superior" because of achieving an amateur extra class license largely through a test for morsemanship. Manual radiotelegraphy hasn't been "pioneered" by you. The transistor was invented in 1948 - 58 years ago. 1947. The PATENT wasn't granted immediately. :-) Amateurs were using them in receivers and transmitters by the late 1950s. Early. Like 1952. See QST or CQ (forget which) which I saw at Fort Monmouth in that year. Transistors made by Philco (?). Whatever it was, the transistors have long been obsolete, out of production, replaced by newer, better, cheaper types. Jimmie, quit contradicting those who were IN the radio- electronics industry or work who worked through all that period. As a double-degreed whizzy something you should KNOW that REAL PRACTICAL transistors for HF use didn't come into being until much later than the late 1940s. There's a whole heaping gob of documents of history of the solid-state era, how it began, all the trouble everyone had to make them work, to make them reliable, to make them cheap. Much of that is now on the web. Go do some study of something OTHER than ARRL "radio history" for your own edification. That is, if you can really tear yourself away from Big Brother. To me, the history of the industry is interesting. To you it is little more than some obscure footnote you hunt for in order to use in messages where you claim your respondent is "wrong" or "in error." :-) Come back when you've actually DESIGNED some solid-state ham radio, not just assembled a kit designed by someone else. Use those mighty collitch degrees, all that radio- electronics "experience" in the "industry" to show us what you can really do. :-) |
#78
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Be sure to hold onto your hat when [email protected] decides to expell some gas.
" wrote in
ups.com: From: on Tues, Oct 3 2006 3:25 pm wrote: From: Nada Tapu on Sat, Sep 30 2006 2:23 pm On Fri, 29 Sep 2006 20:56:08 -0400, wrote: Amateur radio is the ONLY radio service still using morse radiotelegraphy for communications purposes. So what? Amateurs choose the mode they want to use. What is wrong with choosing Morse Code and HF operation? Now, now, Jimmie, you are assigning some "blame" on a plain and simple factual statement: "Amateur radio is the ONLY [US] radio service still using morse radiotelegraphy for communications purposes." What I wrote is a plain and simple fact. You seem to be in denial, unable to accept a plain and simple fact. Your problem, not mine. Some may say the Morse Code *test* is outmoded. But you are saying the *use* of Morse Code is outmoded! Yes, in every other radio service except amateur. You seem to be in denial, unable to accept a plain and simple fact. Your problem, not mine. FM broadcasting is the only radio service that uses stereo multiplex FM - is it outmoded? There is NO SUCH THING as "stereo multiplex FM" mode. FM broadcasting is NOT the "only radio service" using stereophonic audio modulation. Stereophonic audio modulation is NOT required by FM band broadcasters. Those broadcasters MAY use stereophonic audio OR they may use monophonic audio plus a SUBCARRIER separate audio channel OR they may use stereophonic audio PLUS the subcarrier audio. The term "multiplex" applies to SEPARATE information sources, not stereophonic audio. All of that is very much in use today. DTV (Digital TeleVision) broadcasting carries QUADRAPHONIC audio (optional, may be monophonic or stereophonic) with or without extra separate audio subchannels, with or without audio text ("Teletext") accompanying the video. That is very much in use today and for the foreseeable future of American TV broadcasting. Some AM broadcasters are still using the Motorola C-QUAM system for stereophonic broadcasting where each stereo "channel" takes one of the two DSB sidebands. While that system works well, the AM broadcasting listener market has NOT received it well enough to warrant more than a few broadcasters adopting it or any similar AM stereophonic system. It appears to be on the way out due to listener non-acceptance. "Shortwave" broadcasting is still "testing" Radio Mondial system which is capable of stereophonic audio transmission. Technically the system works very well. The increased cost of receivers and the general downturn in world interest in "shortwave" broadcasting might result in a future discontinuance. Note: What was once "shortwave" radio broadcasting is increasingly shifting over to satellite relay and VoIP dissemination rather than maintaining the HF transmitters; program content remains the same. The International Civil Airways VOR (Very high frequency Omnidirectional radio Range) system ground stations ALWAYS broadcast with a subcarrier (9.96 KHz) that is FMed with the reference magnetic azimuth bearing phase. The RF output is amplitude modulated with 30% AM so that any receiver can determine its magnetic bearing to the ground station by comparing the demodulated reference phase with the main AM phase. Relatively simple receiver demod that was devised in vacuum tube architecture times. In use since 1955 worldwide, no foreseeable discontinuance in the future despite wider use of GPS. Multi-channel (many "multis") using FM was once the choice of trans-continental microwave radio relay, the linkage across the USA that made national TV and 'dial-anywhere' long distance telephony possible. It has been largely replaced by optical fiber relay using digital multiplexing of voice and TV channels using digital modulation of laser light. The longest (to date) fiber-optic relay is the long, long like between London and Tokyo through the Mediterranean Sea past Saudi Arabia, India, around southeast Asia, past the Phillippines. Most of it under water. Optical "pumping" with a second optical wave- length is used for amplification to avoid electronic repeater amplifiers. Such optical pumping (amplification) is not possible with microwave RF radio relay. There are many different other examples of "FM"-like modulations at work daily in HF and on up into the micro- waves. The most common is the various adaptations of the common dial-up modem using combinatorial amplitude and phase modulation of an audio carrier wave. Those are the "TORs" (Teleprinter Over Radio) used for data communications in maritime service; voice is done via SSB and may be simultaneous with the data. This is on-going in use and for the foreseeable future. The FIRST HF Single Sideband circuits (since the beginning of the 1930s) used combinatorial modulations. The 12 KHz bandwidth was composed of four 3 KHz wide separate one-way channels. Each 3 KHz (voice bandwidth) channel could carry up to 6 frequency-shift-modulated teleprinter channels. The common arrangement worldwide (by both commercial and government users) was to use two 3 KHz channels solely for voice/telephony and the remaining two for 8 to 12 TTY circuits (number dependent on the redundancy required to overcome selective fading). While those "commercial" SSB circuits were numerous from the 40s on into the 70s, their number has dwindled due to better throughput and reliability from satellite radio relay services. Was there anything else technical about communications and/or broadcasting that you wanted to erroneously state? Whewww. That was a gassy one. SC |
#79
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Be sure to hold onto your hat when [email protected] decides to expell some gas.
On Thu, 05 Oct 2006 00:11:28 GMT, Blow Code spake
thusly: Whewww. That was a gassy one. We don't need to hear about your sex life. |
#80
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Ping [email protected]
You seem pretty knowledgeable so I need some assistance at understanding something. What I can't understand is the the incredibly childish attitude of some of the pro-coders here. For me, the confusion stems from having known several old timer hams while growing up. I looked up to them. They were older gentlemen that had some fascinating knowledge and great stories to tell about their ham radio hobby. This was back in the 60's and early 70's so they are all gone now. I am sure now that they are spinning in their graves, after the spew puked up by some of the pro-coders. Not all of them, to be fair, but a few loud ones stand out. I still can't figure out how a statement about how CW is just beeps[ as opposed to voice on the same hardware] became transmuted into a requirement that I should hate usenet. That kind of blatant mis-direction seems to be quite common. The statement is quite simple...a voice on the airwaves can convey much more information than just the words spoken but CW can only convey the words. Since the medium and usually the hardware is exactly the same weather or not a microphone or a key is used, why bother with a key that is much more limited? Somehow, this relates to pixels on my screen but I have yet to understand why my opponent felt the need to misdirect, misrepresent and misquote. Can none of the pro-coders make a valid point? Why do some of them feel that insulting my daughter will make their point valid? Are their points so weak that they resort to vulgar insults instead of engaging in debate? I usually don't killfile people but I have made a few exceptions lately. Now, there will be some spew directed towards my post. They can go ahead and prove that turning ham into CB will most certainly be a great improvement to the ARS. I NEVER knew anybody on CB that was as rude and vulgar as some of the pro-coders here. I can have a nasty mouth too, at times, but it's always in response to stupidity that is obviously not to be taken seriously. And, ironically, *I* am the one told to grow up. That's just too funny. |
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