Posts by Henry Hallan 23 posts • joined 1 Oct 2014
What do you think the reason was for switching from analogue TV to DVB-T? It was to sell all that lovely bandwidth to the mobile phone operators.
http://niviuk.free.fr/lte_band.php
Notice the bands at 450, 700 and 800? Not all of those are used in the UK, but 800 certainly is.
Either way, it's all UHF. Your body is unlikely to be affected by 900MHz and not by 800MHz -- unless you fold your tinfoil hat very carefully!
Another candidate was the magnetic deflection used for the CRT display. A powerful magnetic field needed to change rapidly in the flyback part of the scan producing a long series of harmonics of 15625Hz. The detector vans I saw in the 80s looked like they had some kind of search coil.
The problem is the poor onboard chargers on most EVs. Only Renault and Tesla allow 3-phase charging. Empty to full takes me less than 2 hours on a 3-phase AC charger and for most of the charge it ticks along at about 1% per minute. After 200 miles of driving a decent break at a street charger is enough.
My Zoe gets about 290km (call it 180 miles) between charges if I don't drive like a granny. I bought the battery outright. But I probably paid more than you.
3-phase AC charging is about 1% per minute so about 108mph equivalent. AC chargers are cheap as chips.
The grid infrastructure to support them is a problem though.
I've had one since mid July, bought online from a UK supplier. It's not tied to a UK network but I live in Ireland.
There are a few silly UI bugs in the shipped software but the update is pretty good. It makes a great wifi hotspot and the audio quality is lightyears ahead of any smartphone.
This underlines the point that, if the Moon were suddenly provided with atmosphere and oceans, they would last millions of years. SF talks of terraforming places like Mars and even Venus, but misses our nearest neighbour!
A few years of cometary bombardment, some blue-green algae and another continent's worth of land.
Mine's the one with the attached wings - because on a terraformed Moon, human-powered flight would be easy!
You may have more luck by explaining it in their language. The key concept is "intersectionality," which explains that people are privileged and/or unprivileged for various reasons, which may intersect in any individual.
In other words, you might be privileged for being white while being unprivileged for having the wrong social background. Or disability, or health issues, or politics, or whatever.
It's a powerful idea, not least because it prevents the very "white is always wrong" scenario you describe.
The frequencies with the strongest transmission from Earth are 50Hz and 60Hz. And no, they are not modulated with "I love Lucy" or any such.
When I was studying electrical engineering along with electronics, I was told that the difference was that, in electrical engineering, anything less than 10kW was noise. Now that may be a small exaggeration, but not a large one: electrical transmission losses on this planet run into megawatts or more, and much of that should be detectable at a distance.
Compared to that telecoms transmissions are insignificant.
The big selling point for 5G is not bandwidth, it is latency. Low latency is how 5G is supposed to allow control of devices (e.g. cars, robots) in real time. To obtain high latency short symbols are needed.
The problem with short symbols is that they are susceptible to multipath distortion. And, for all the promise of technologies like MIMO and beam-steering, the best way to fix multipath distortion is to shorten the path length. That is, to have smaller cells.
Carrier frequency doesn't change that.
The issue isn't glyphosates that are the problem, it's neonicotinoids. In other words, insecticides not herbicides.
Beekeepers don't want to take away your RoundUp. Calm down, eh?
Now you've calmed down, Monsanto still produce neonicotinoid insecticides, so they certainly do share the blame. But we still don't want to take away your RoundUp.
The "recent Toty think tank" appears not to have noticed that the UK has a population density 15x that of New Zealand. The pressure on prices may be upward, rather than downward -- which may turn out to be good for the rural economy (with or without broadband.)
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