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#15
October 4th 04, 05:49 PM
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Len Over 21 wrote:
In article , (N2EY) writes: (Avery Fineman)(so desperate to get past spam filters that he changes screen names)wrote in message ... In article , (N2EY) writes: So...was all this "phase noise" invisible way back in the 1990 time? It didn't exist? That you didn't read the published material does not mean that the material did not exist. The synthesizer phase noise issue was debated well before 1990. It only came up when a frequency synthesizer was incorporated? :-) Synthesizers were in wide use prior to 1990. The phase noise issue became important as synthesizer circuits became common in transceivers. I'll invite to read up on the subject. I've provided several urls. There are numerous other sources of information on the subject. Why not avail yourself of some of them? R70s were made 1982-84 (approximately), so the design is at least 23 years old (1981). You frequenctly denigrate others as "behind the times", yet the R70 is the newest/most modern piece of HF radio equipment you mention owning. Just another example of "do as Len says, not as Len does". That little Icom R-70 still works fine, as advertised. While I doubt that the receiver functions as advertised, I have no trouble believing that it works as designed. I've got one. You don't. :-) I'm sure it is quite a nice piece of equipment for the casual SWL. I'm happy for you. The only thing I "recycled" was some paper to get one in working order. :-) I recall you mentioning that. "Cash" wasn't it? Use of a credit card would have muddied the waters. "Phase noise" wasn't a big buzzword then. It has a three-loop PLL in it plus a microcontroller. Sensitivity is still good and comparable with any contemporary HF receiver. "Phase noise" wasn't a big buzz word in the Icom engineering and sales bunch. Elsewhere, the use of the term was already common. I've yet to get close to the concept of sitting around a shack making as many contacts as possible in a given time as any "sport." Skill and endurance are certainly big factors in winning any amateur radio contest. Neither is that activity "pioneering the ariwaves" nor any sort of "training for emergencies" to reasonable-thinking human beans. Did you ask any? No claims for contests as pioneering the "ariwaves" have been made. Any on-air activity which requires speedy, accurate operation is good training for emergency situations. Like chess or checkers or board games, radio contesting is a GAME. There are some similarities. A good strategy, playing within the rules and some luck are involved. No board games that I'm aware of require putting up big antennas at height, putting together a radio station or planning sleep breaks. It is FAR from an ATHLETIC sport. Not if done correctly. You *do* sound just like him, Len. Lots of words and lots of put-downs and lots of theory. But in terms of actual radios built on your own time, with your own resources, from your own design....nada. Zip. Zilch. Zero. Nothing. Not that anyone here knows about in all your years and petabytes of posting. If I had extra copies, I could, with a year or so off to do it, digitize those things and put them on a website that allowed at least 100 MB user space. That includes corporate documents (public) along with photographs. Not worth it, since the typical PCTA extra "commentary" (to use a word very loosely) would be totally derogatory. My little text and photo memorabilia on the ADA assignment takes 6 MB in PDF. I thought you had no need of rank, title or status. YOU have REJECTED simple things like a digitized license repro in the past. You would be expected to reject anything I present...as "credentials" or whatever real proof there is...and there is a lot of it. Rank, title and status? Tsk. I lost interest in DXing in "radio sports" and the wallpaper collection of QSLs after working at station ADA long ago. To each his own. Why do you denigrate what others find as fun? What is wrong with live and let live? A federal REGULATION requiring morse code testing in order to get an AMATEUR license to operate on HF is NOT "live and let live." Sure it is, Leonard. You have the same opportunity to take and pass such an exam as I did. The REGULATION doesn't single you out. I don't know why the term "AMATEUR license" bothers you. That's what the exam is for--an "AMATEUR license" to operate an AMATEUR radio station on HF. Be that as it may, you didn't bother to answer the question about you denigrating what some radio amateurs do for fun. Why would it bother you that someone participates in a contest? I mean, it isn't as if you are actually involved in amateur radio. Dave K8MN |
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