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Jerry Stuckle wrote:
And I'm more and more astonished that you seem to know my business better than I do. I certainly do! Your claims are all hogwash. Either you did not know your (technical) business when you were in it, or you have forgotten everything now that you are out of it for decades. No, you know NOTHING about my job, the people I employ or their technical expertise. You think EVERYONE IN THE WORLD is as smart as you are. But here's a clue - the VAST MAJORITY OF THE WORLD is SMARTER THAN YOU. I never doubt that! But I am sure I know more about it than you! And so do many others here. It is you that is *thinking* he has a lot of knowledge, but knows absolutely no facts. Not that this is required to employ people, just make sure you never toucht the stuff yourself! You have no idea about what orders of magnitude are involved. For example: a picowatt is about 8.6uV in 75 ohms. An FM receiver will give a clear signal on that. Not full quieting, but certainly receivable. I know EXACTLY what a picowatt is. And I also know what portable receivers are capable of. Sure, if you feed a picowatt directly into the front end of a receiver, a good receiver will hear the signal. But what field strength do you need at the antenna for a portable FM receiver to hear that signal? And most of your inexpensive portable receivers will not hear much of a signal (if at all), even if you do feed a picowatt directly into the front end (not that you can without major surgery on the receiver). It was you that was coming up with picowatts when others suggested nanowatts. That tells enough, doesn't it? Unlicensed transmitters for dedicated frequencies like 433MHz (wireless headphones and the like) are about 10mW, and for broadcast bands (e.g. to link an MP3 player to a radio) they are even less. E.g. in the FM broadcast band the limit in the EU for such a transmitter is 50nW effective radiated power. That still allows for a 30dB path attennuation for a usable signal on the receiver. Sure, but you're also talking a 5Khz deviation (actually about 12Khz bandwidth). Commercial FM uses 75Khz deviation (typically around 180Khz bandwidth). A huge difference. No, not at all. It is the EU regulation for unlicensed devices operating in the 100 MHz broadcast band that they must not emit more than 50nW. Now I'm sure that in America everything is bigger and the rules are better (not the receivers, apparently), but you are not going to convince me that the same equipment in America emits 100-500mW. That is just ignorance on your side. But as you are used to jumbling up your dBm and dBmV values, you have no idea about that. Your business was probably connecting ready-made equipment, and selling. But certainly not testing and debugging, that is clear. No, i am not used to jumbling them up. You just have no idea what my industry uses for measurements. Oh yes I do! dBm, meaning dB over a milliwatt. And in the cable industry, dBuV, meaning dB over a microvolt. In America, where everything is bigger, probably dB over a millivolt, but not expressed as dBm! IOW, a typical troll - thinks he knows it all when he knows absolutely nothing. That's you, I take? |
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