740 posts • joined 4 Feb 2008
Re: re. small antennas
Yes, which is why path loss rises with increasing frequency. If you are only interested in small ranges then this actually helps with interference mitigation, but of course you need enough link budget to make your applications work within the serving cell.
Re: Gender of the internet???
Only if you can see the fnord...
Re: Doppler Shift and Timing of Satellite Signals
Read the ATSB report, there are two or three examples of other commercial flights being tracked using the same Inmarsat systems and their ground tracks being plotted within a quite small error in comparison with their position recorded from GPS coordinates. That should mean that data captured from the MH370 aircraft is valid and relatively accurate.
Re: What about those black-box locator pings?
The problem is that the pings can change frequency as the batteries run down, it is quite easy for a 37.5kHz pinger to drift down to 33kHz once the batteries are nearly dead. In addition the water pressure also affects the frequency a little, so the frequency can change depending on the depth.
Re: Do they still charge for technical support calls?
You could always try asking a question on the Fibre Broadband forum at ThinkBroadband.com
There are people there who can get the information you seek.
Re: Good news
He's been out of the medical definition of a coma since Sabine Kehm said as much in April, he had opened his eyes and was exhibiting short periods of apparent consciousness.
What that means for his future is unclear. Sadly Gary Hartstein, who is a realist (and a neurologist), doesn't think that his chances are very good. I wish it were otherwise but only time will tell.
Never did work out what that extra 1 meant, the 100MHz should have implied a DX3 suffix.
Just to make it clear, BBOS 10 does away with all that Blackberry data stuff and makes it behave like everything else with normal APNs and settings, it's now only BES that uses BB's own services.
Re: Groundless conjecture.
IIRC the US Marshals are part of the FBI and hence can be used to do stuff that isn't publicly admitted.
Isn't that why Florida police have deputized some of the cellular surveillance operatives into the Marshals so that they can't be so easily FoI'd about what they're doing?
Re: Groundless conjecture.
That'll be the same groundless conjecture that DC has been writing about for 35+ years now where he's regularly been shown to be pretty much right in hindsight is it Matt?
The establishment hate him, and have tried to stop him many times, they wouldn't bother if he was an insignificant gadfly now would they?
Re: Impressive amateur tracking work...
Have a look at the PlanePlotter site, I think it's at www.coaa.co.uk or some such.
Bev is one very smart chap, he managed to make MLAT work because the original SBS-1 receiver has a fast clock that is used to timestamp received transponder signals, with ntp and some clever PhD level maths you can then create intersecting hyperbolas that tell you where the thing is provided that you get enough receivers to resolve the ambiguities in position.
From 45,000 feet, just about everyone can hear a transponder.
Re: gaz TheOtherHobbes
Hardly, the Dutch descendants were responsible for Apartheid which in itself added to the pressure building up in the southern part of Africa.
You can't let them off, they're as guilty as all the other colonial powers!
Remember that all these countries boundaries were created in 1918 in a stitch-up between France and the UK. Those straight lines on the map are a dead giveaway aren't they?
What is happening now is that the Middle East map is being redrawn with the tribal and religious links from the past reimposed, although quite how this will end up I don't know.
It was inevitable that once the regional dictators were changed/removed/challenged that something like this would happen.
May you live in interesting times!
Re: sounds familiar
It has taken a while for this particular bug to be found, but without the source oversight it wouldn't have been. Had this been in a closed-source product without the same robust methods of detecting such bugs the same thing can happen and the number of reviewers is much more limited.
It's a great shame that this didn't get spotted earlier or recognised as a security problem but then if someone is determined to commit at 11pm on New Year's Eve then the chances that they remembered doing it and ran lots of tests subsequently is clearly reduced.
Re: You're an idiot.
Does BT provide VDSL connections over exchange connected lines? I suspect they don't, which means a limit of 24Mbps from ADSL2+ instead of VDSL's limit of 80-odd Mbps.
And no wonder that they can't keep track of which features are fixed/broken in such a labyrinthine numbering scheme.
Maybe they could make it even worse using hexadecimal and colons...oh, no, that's IPv6.
These chaps have dedication!
Well done to them both, it's great to see such single-mindedness.
It's a long time since I remember seeing David and family happily playing with Mindstorms robots on the living room floor, glad to see that all that coding has achieved something really useful!
One really good thing to see is...
...that Fedora 21 is not going to be released in May, they've actually put a whole 6 months into the schedule to get things settled down a bit more. The most recent 3 releases have been pretty hairy in that things have gone wrong with the new installer and the updating tools such as fedup have been less than perfect. It seems that someone has finally said "Enough!" and forced a delay to allow people to tidy up things that need it.
Good on the security overhaul too though, sounds good to me.
Re: Got 4G ?
Have Vodafone rolled out the 10.2.1 OS update for their BB 10 devices? It might make a difference.
Some time ago my daughter's Z10 (which is on 3) seemed to leave the network selection to 3G/2G, and once it changed it back after it was set to 4G/3G/2G. Worth a look see I'd say...
So let me ask this then....
Base stations can transmit at powers up to +64dBm, and receive at levels down around -100dBm. That's 164dB difference in signal level, or more than 16 orders of magnitude. How many bits of resolution would you need to separate out those two very different amplitude signals? My rough calculation says 27 bits.
Is that even possible? I don't know of a way of doing that even at audio frequencies, let alone RF.
Re: Time for a Sting?
Yep, that Law of Unintended Consequences is a real bitch!
Re: Damn thieves
You need the high voltage to puncture the (high resistance) outer skin layers. Once you're into the nice soggy stuff inside the skin then the resistance drops very rapidly and current flows without much problem.
This is the reason that people who get electrocuted by a few thousand volts and up tend to end up scorched and smoking, their internal body fluids have boiled.
A little more on this, via the UKCrypto mailing list...
"In 1996 these bodies were abolished and the NHS-Wide Clearing Service (NWCS) was set up to provide a means of transmitting the records. In 2006 this work was taken over by the Secondary Uses Service, which is run by the Health and Social Care Information Centre and the National Programme for IT.”
So it came under HSCIS’s remit in 2006. The data set was from 2000-2010.
For tracking though, there is the HESID - http://www.hscic.gov.uk/media/1370/HES-Hospital-Episode-Statistics-Replacement-of-the-HES-patient-ID/pdf/HESID_Replacement_Nov09.pdf
Which appears to include per-client pseudonym-ids. Data cleaning on release appears to be documented here - http://www.datadictionary.nhs.uk/web_site_content/cds_supporting_information/security_issues_and_patient_confidentiality.asp?shownav=1
We already have...
...OpenSignal on Android that does pretty much this.
Assuming that it's accurate and that it keeps the correct values.
...SNR in dbm (sic)?
Heavens to Betsy, now we know why coverage isn't what we expect!
Have to agree that it's pretty nice and has gained a lot of new features in a fairly short time.
While it looks very 'BlackBerry' on my Nexus, it seems to work well and keeps me in touch with the BB/iPhone/Android using family members very nicely.
Thumbs up from me!
Re: kit kat
It's often difficult to upgrade because the hardware vendor withdraws driver support for the chipset used in older phones, mainly because they don't have the resources to work on old hardware while simultaneously developing and releasing future and current hardware.
If you want an example of an earlier 'eviction', just ask...
...the Milton Keynes Amateur Radio Society about their experience when a more prestigious organisation decides it wants to muscle its way in.
Re: KitKat 4.3?
Sorry old chap, no cigar!
4.1.x/4.2.x/4.3.x is Jelly Bean, 4.0.x is ICS.
Re: Dead Platform
I had never used a WP device before, but a while ago I was in my local where the landlady (with a Lumia) and a rather the worse for wear customer (with a Series 40 Nokia) were trying to exchange phone numbers. I got asked to do it for them, and I will confess that it took me a while to work out how on the Lumia (about 5 seconds on the Nokia including typing the name). There was a number already in the received calls list, so I thought OK create a contact. Riiiight... took several minutes of fiddling to achieve that.
I have never before had that much trouble with any other phone using any other OS. It should just happen without the user needing to think, rather than needing a lot of poking about.
Re: iTunes on any platform is pretty grim
The fix is to uninstall each component of the iTunes virus one by one, then reboot and install the latest version after downloading a new copy.
Nasty, and why it takes 100MB+ download I can't imagine.
I'm sure they did monitor, must have been directed by good intelligence in those days. Perhaps that helped.
Of course it wouldn't have been enough even if they had been able to monitor everything. I'd always wondered whether airport airside security was very good then or whether the authorities were just very lucky. Tuirns out it was the latter, there was a bomb that didn't detonate placed on a Trident airliner flying from Belfast to London. The reason it didn't work is simple, it was placed under a seat but luckily the passenger that sat there was a fat bastard and his weight disrupted the device so that either the timer failed or the wiring was disconnected in a crucial spot. It was found at Heathrow and the whole thing was hushed up.
You won't find this in the official archives, but I know someone who was there and it's as true as any other actual IRA incident of the 70s. Personally I missed the Harrods bomb in the early 80s by about half and hour, some of my friends were inside the place when it went off. None of us would have been in favour of the current arrangements because on a large scale they just don't work and they are a threat to everyone for as long as the data is kept in storage for poring over later.
Sometimes it just comes down to the percentages, there is a tiny chance of being killed by a terrorist in your lifetime but being totally surveilled is always a 100% bad thing for the population at large.
The price of freedom is that in a statistically insignificant number of cases, mad people kill others at random and are not stopped before they excute their plot.
We used to accept this, then some time in the last 20 years or so everyone thought they were at no risk of dying at all except for being killed by maniacs.
But the problem is...
...you're not sifting a haystack for needles, you're either sifting a haystack looking for hay or a pile of needles looking for needles...
Re: Is this the first time that ...
Even if it is, you can bet that any lessons will be forgotten or hidden behind that old 'Beware of the leopard' sign...
Not in the UK it isn't.
Re: Here's another legal hypothetical ...
Really decent tamper-proof hardware has several measures in it to prevent physical intrusion, often just cutting a single conductor in a wire net surrounding the storage elements within a potted assembly causes the inbuilt battery to be inverted to several kV and this is then applied backwards across the storage device power rails until they are no longer able to recall their own names.
Re: and another thing ...
This is what is totally fucked up about this sort of law, it may only be used against terrorists now, but while it remains on the statute books there is no reason it can't be used against someone who is rocking the establishment's boat. If you get a worse version of the current Home Secretary then that could easily happen without any change of government or indeed law.
Re: GCHQ isn't the problem
If only we still had a free society eh?
Re: Once more proof
It seems that there is a new attack against Truecrypt.
Since the police had physical access to the device it would appear that this makes all such devices vulnerable.
That's no surprise...
...if they're still using bang path addressing.
Re: Conflicts of Interest
I think the problem is Jefe, that while I accept pretty much all of what you say (I've been partially involved in standards bodies over decades) I can't see any real way to do it much differently. Often it takes a lot of work behind the scenes to validate a proposal and no one is going to put that out in public because it's often done using techniques that are not known to competitors (or the details of the techniques are not known to them).
Is there another answer? Maybe, but standards already take forever to crystallize and adding to the time taken won't be popular with the people who want to sell products based on the standard and make money from them.
Wrong moon old chap, that was Europa wasn't it?
Oh, and there was that chap in the space suit using up his last remaining air and battery power to broadcast an explanation. Maybe that one didn't make it through the Great Firewall...
Re: Wouldn't it be better if solar panels were ...
No, because the energy they would have to absorb then would make them get very hot. You want the photons that excite the voltaic bit of the cells, not the IR photons that make things hot.
Re: It's a conspiracy I tell you...
...perhaps not, but backed up by a spring-loaded pivoting cricket bat mounted on the music boat it would improve their capability no end.
Re: The Mossie and tech versus numbers
The Sherman's propensity to brew up was actually not due to its gasoline fuel (diesel oil also burns very well when atomised) but in fact was because the gun ammunition stowage was too close to the more vulnerable sides of the tank where a hit would transfer energy into the shells. Once that propellant is ignited inside the turret it's game over.
Re: The Mossie
The early Mosquitos were glued together using casein glue, which is pretty much made by boiling up cattle remnants (hooves etc) after they've been butchered for meat. It's organic, and bacteria like it, and it absorbs water making a delicious meal for the little buggers.
Later on the Mosquito was built using formaldehyde-based glue, it had none of the problems seen with casein glue and so allowed the aircraft to fly in the tropics without falling apart in a couple of months.
...my local BDUK project's rollout plan has now appeared on the local council web site. This is Bedfordshire, in the area adminstered by the Borough council.
My village will get "superfast broadband" but not until Phase 3 of the project between January and June 2015, Phase 1 won't start until July 2014 so I suppose that it could be worse.
Luckily there is only one BT cabinet serving our whole village, but of course no guarantee that this estimated rollout will stay on track.
I wait with bated breath...
Thought it was supposed to be better in super-slowmo...
No, it really isn't time to give the paranoia a rest....
...because we now have the proof of how much the establishment fears the populace and is putting in place the mechanisms to protect itself.
Did I ever think that the UK would become China? No, I didn't, but it is happening before our eyes and if we're too apathetic to do anything about it then we deserve our fate.
The thin end of a very long wedge is being gently inserted, it can only get worse with time unless people act.
- Asteroid's SHOCK DINO KILLING SPREE just bad luck - boffins
- Just TWO climate committee MPs contradict IPCC: The two with SCIENCE degrees
- BEST BATTERY EVER: All lithium, all the time, plus a dash of carbon nano-stuff
- Stick a 4K in them: Super high-res TVs are DONE
- Review You didn't get the MeMO? Asus Pad 7 Android tab is ... not bad