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ResidentNeville

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Everything posted by ResidentNeville

  1. ResidentNeville

    Smallest, most direction antenna

    Haha. It took us way too long to figure out we were talking about different things. I'm not 100% sure of that, but I can't right now think of any reason that wouldn't be true in an ideal world on a 2D plane. I'm happy to continue on the assumption its true...
  2. ResidentNeville

    Smallest, most direction antenna

    This is a deeply flawed supposition. Physics is a bitch. RF physics is particularly nasty. To show how deeply flawed this is, start by imagining that we have two cars spaced 10m apart, and we start rotating the cars. You can't just keep the cars the same distance apart when you rotate them. That phrase has no specific meaning. It could mean: 1) The distance between the two nearest points of the cars remain the same 2) The distance between the center of mass of the cars remains the same 3) The distance between the center of area stays the same 4) And so on and so on So what do you mean when you say that "the distance between the rotates antennas would remain constant"? What kind of keeping the distance constant would prevent you from adding a mindblowing layer of complexity to the mutual coupling? Not only do you have to choose between the examples I gave for cars, but in the RF world there's a magnitude more complexity and possibilities. Did I mention that RF is particularly nasty? That is not my contention. My two contentions so far are: 1) Putting two antennas 0.5lambda apart is not likely to be even remotely straight forward due to mutual coupling (not to mention a whole host of other real-world complexities). You agreed with this contention and said "yes it seems like that could be somewhere between significant and deal breaker." 2) Your proposed solution to the coupling issues, that is rotating the antennas, does not solve the issues. It makes it worse. Much worse. You'll start to see why this is the case when you consider how its impossible to even "keep the antennas at a constant distance apart". ^^ Someone with more braincells than me would've used the word "centroid" instead of "center of area".
  3. ResidentNeville

    Smallest, most direction antenna

    Still not convinced that you grasp what mutual coupling is. Still not convinced that you know about about RF. You just repeated the exact same nonsense. "Incidence of incoming signal direction of arrival" uses more impressive words but it says the same thing, and reiterates a flawed understanding of RF. Your idea requires the two receiving antennas being totally independent, but they will not be, because they will be coupled. Please don't make me say it a fifth time. The receiving antennas mutual coupling might very well be independent of the azimuth angle of the excitation plane wave, BUT THE ANTENNAS MUTUAL COUPLING WILL NOT BE INDEPENDENT OF THE RELATIVE POSITIONS TO EACHOTHER. Please don't make me say it a sixth time.
  4. ResidentNeville

    Smallest, most direction antenna

    I do not know if that's true or not, but I know its irrelevant. The mutual coupling between two receivers is heavily dependent on receiver direction. Spinning the antennas will fuck your shit up. It doesn't matter if the transmitter is fixed or not.
  5. ResidentNeville

    Smallest, most direction antenna

    Mutual coupling means that the signal received in one antenna will be transmitted to the other nearby antenna through electric and magnetic fields. Basically, two antennas in close proximity act a bit like one antenna. This exacerbates the problem. There is still a lot of crosstalk between the two antennas, except now the crosstalk is a few orders of magnitude more complex. Unlikely to be useful here. In general, in WiFi antenna is going to need to be 6 times bigger to work for FM. The wavelength of WiFi is 12cm. The wavelength of this FM is 70cm.
  6. ResidentNeville

    Smallest, most direction antenna

    Physics is a bitch: For unambiguous results, the antennas should be spaced half a wavelength apart, or less. However, this can result in significant mutual coupling between elements, which means that each antenna's phase measurement will be corrupted by the other's.
  7. ResidentNeville

    What's on your mind?

    Looks more like commercial rents are due to increase. Don't be fooled by those skinny graphs that make it look like commercial property prices are skyrocketing. They are visually misleading. That graph shows that even the CBD office prices, the biggest increase, have only increased 6.5%pa. Macrobusiness.com.au don't give a recent reference for that graph. So I can only guess that its nominal values, not CPI adjusted.
  8. ResidentNeville

    my politics

    But what people do to each other's genitals is entirely the government's business. You're being fucking hypocritical.
  9. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    > i said my daughter was never bullied at that school ever again and actually what I didn't mention was that bullying dropped to zero at the school overall. Hahahahahahahahahahahahahaha.
  10. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    > Very true, however this is why I'm trying to ask yourself and Neville to adopt a more industry appropriate use of the word 'bullying', and not use the dictionary for this one . Bullying is bad. Whether its recurring or a "once off". Your desire to use a different label for it when it's a "once off" doesn't change anything and is meaningless. > I'm sorry, but in instances like that, to be called a 'bully' because I was finally able to put an end to 3 years of genuine emotional hell, I find rather offensive. Who called you a bully? Chrisg; I won't embarrass you by asking (again) what kind of bivariate algebra you taught.
  11. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    > This is probably personal opinion, but one instance of 'handling a situation badly' =\= 'Bullying'. > While on strict definition it does, I really object to using that term for single instances of conflict. > I was almost always on the receiving end, and I'd hate for the REAL bullying to be watered down by "This guy had one fight" or even "Today, we fought all day!" > It should be used for more lasting, or ongoing harassment.... IMO. This is nonsense. Bullying is the use of superior strength or influence to intimidate someone. Bullying is bad. I'd hate for REAL bullying to be watered down by "it was only a once off".
  12. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    > As for braggery, no Mayte, its right there in black-and-white. In an attempt to defend your intelligence you bragged that you teach something so complicated that half your students glaze over with confusion. > My grey matter is perfectly fine Ev, I occasionally teach a course on bi normal algebra - no disrespect because half my students glaze over as well, and not out of boredom, simple confusion I don't know any teacher that would brag about students glazing over from confusion. There's also no such thing as "bi normal algebra." That's not a term used by anyone who actually works with those things. Giving you the benefit of the doubt, I assume that you're referring to one of the few mathematical concepts with the word "binormal" in them. None of these concepts should be particularly challenging to learn nor teach, though. Giving you double benefit of the doubt, I'll assume that you're not a crap teacher, and that you just deal with "bi normal algebra" that I nor Google have heard about - care to be more specific? I want to learn more about this challenging branch of mathematics. But, it appears I am rambling off topic...
  13. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    > Not bragging Yes it was. Read it again.
  14. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    > Who initiated all of this ? You keep on bringing that up, but its irrelevant. > half my students glaze over as well, and not out of boredom, simple confusion I don't know any teacher that would brag about students glazing over from confusion.
  15. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    > I repeat, I'm no bully, but if anyone tries to bully me, or my kids they should either reconsider or book themselves an ambulance...
  16. ResidentNeville

    money

    I am not meaning to backup Nich... everywhere. But it is very funny that Nich... suggests that plastic pollution and super market bags are not relevant to this discussion about money, and Atomic's response was to bring up how nappies were better back in the day.
  17. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    > So Nich, either explain yourself, tell me how to talk your way out of a fist headed for your jaw, otherwise frankly fuck off, your comments have been misinformed and inane.  You sound like a balanced and level-headed individual.
  18. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    > You're right, but I wonder. Given the choice; Would I prefer to rely on words for intimidation? Or force for intimidation? That might not have been the dichotomy that Nich... was suggesting. Nich... was giving the option of "physical force for intimidation" and "words". Not "words for intimidation".
  19. ResidentNeville

    Bullying: The risk with 'accepting differences'.

    Fenn; Thank you for posting, it's good to hear the informed opinion of a professional.
  20. ResidentNeville

    AussieBroadband - Not for the People!

    > I asked if the promotion would be offered any time that month, to decide if it was worth waiting. And was told no (to the best of my recollection, at least). SMH. The self-entitlement of some people.
  21. ResidentNeville

    AussieBroadband - Not for the People!

    Do I understand this situation correctly? 1) You ordered internet when there was no free modem promotion, and you were made aware of this. The following day they started a free modem promotion and you feel that you're now entitled to a free modem? 2) You were clearly told by PM on OzBargain that you will not get a free modem, but you made this into a whole big thing anyway?
  22. A sufficiently young foetus is not a human being
  23. > A sperm is not a human being. Yes it is.
  24. ResidentNeville

    Bitcoin trading.....

    Stagflation does not belong there. Stagflation is inflation. It describes the situation when there's inflation in a stagnant economy. There's inflation, deflation, which just describe opposite sides of the same 1-dimensional scale. Deflation can lead to a deflationary spiral (you DEFINITELY do NOT want that). And crypto is most certainly not deflationary.
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