UK Signal/carriers...?

Hi All, I am having major problems with my iphone signal in the UK. All was fine until I went into an area with a bad signal about 2 months ago now the phone constantly is low on signal or has no signal at all. It seems its always trying to find the best signal/carrier... I keep getting messages saying the signal/network is lost please go to settings to rectify this.
In the settings menu I have the choice of choosing "automatic" for the carriers. All the available carriers are not always there as they are on my wifes phone.
Could this be a software problem? Its really frustrating...
Any sugestions?
Nick

Lets face it, the iphone is not a good phone for phoning, particularly in marginal signal areas.
Its a great shame that the primary function of a phone is so poorly executed - at least give us UMA so I can use my home wifi to send and receive calls.
Every phone I have had since 1986 has had an auto redial, auto text resend function.
I am astonished that iphone doesn't - do all Apple developers live in perfect signal coverage areas?
Using the redial function is frankly dangerous whilst driving

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So if the signal drop is caused by the hand physically blocking antennae...

Apple is trying to convince us that this issue "exists in all smartphones" and that its caused by the hand physically blocking the antennae. Heres their education on it:
http://www.apple.com/antenna/
However, if the case is the hand blocking the antennae, as they want us to believe, then how come the iPhone4's signal problems can be reproduced without even touching the phone?
There are many videos of the phones antennae being shorted with a house key, part of a paper clip, etc, with the users hand nowhere near the phone. In fact, the person could stand 100 yards away and zoom in and see the signal gone with just a staple covering the black line.
Basically what I'm saying is, just because the result is similar does not mean its the same issue.
They should have announced a hardware fix, along with the bumpers for now. A simple polymer coating of the antennae, to reduce conductivity, would have fixed the problem, not required new FCC approval, and cost probably 25 cents per phone to implement.
Message was edited by: kre62

The facts are very basic:
1. Coming close to an antenna affects its impedance and its signal-carrying characteristics (ie. it can attenuate the signal) because antennas are designed and tuned assuming there are no conducting surfaces near it
2. Obviously, you cannot avoid close proximity to a cell phone antenna
3. Most other phones have the antenna surrounded by the case, so while you can get close, you are not directly contacting it
4. Apple chose to place the bare-metal antennae on the outside, where you your body (composed mostly of conducting H2O) making a direct electrical connection to them
5. To make matters worse, they placed two different antennas (cell and WiFi/BT) very close together - separated by a millimeter. Shorting those antennas is very easy to do. Not a great idea.
6. A case will keep your hands from shorting the gap, and also avoid direct electrical contact. This makes it similar to other smartphones.
So, while having the antenna act as the rim of the case sounds really cool and innovative, from an engineering efficiency standpoint it was a lousy idea.

Signal strength affect on X1 box?

Our sound has been choppy for a couple of months. The sound drops out for a split second. The whole problem is completely intermittent. We might go for hours without a problem. The sound might drop out once (for a split second), or so often that I have to turn on closed captioning in order to follow the dialog. When it first started, the problem affected live TV, recordings, and On Demand. The strangest part is that if I played a recording more than once, backed up a live TV broadcast, or restarted an On Demand show, the dropouts wouldn't be in the same place! Eventually I got around to calling. A "house tech" came out and replaced the box. At that point, the new box refused to tune to certain channels, or the video was completely pixilated. Comcast rewired the house, ran a temporary line from the house to the street, replaced the splitter (we have a cable modem) twice, and swapped in several more X1 boxes. Then the line techs came out and put a patch in the underground cable servicing our end of the street. We're waiting for the underground line at the street to be replaced, and for the line from the street to the house to be replaced with a permanent (buried) line. So, here's where things stand. The sound is still choppy, sometimes, but not as bad. Furthermore, the problem now seems to be limited to On Demand (although it's so intermittent, it's hard to tell for sure). Here's where we seem to be stuck. Since the dropouts moved around when I replayed a recorded show, it can't be the signal carrying the show itself that's dropping out. If it were, a recording would have the dropout in the same spot, every time. Just to make things more complicated, I have a Blu-ray player and haven't seen any signs of a problem when watching movies. So, here's my real question: can signal problems cause the box, itself, to get the hiccups regardless of what's playing? I've been working with a second tier tech in the Colorado repair center, and she said it can't. Does anyone have an opinion on this?

jerryschwartz wrote:
Our signal levels are iffy. They ran a temporary line from the street to my house, so that leg's probably okay; but they had to cut off a hand's length of corroded underground cable and patch it with some reducers and a piece of (I think) RG-6. They also had to do something else down the street, but I don't know what that was. I can't look over everybody's shoulder at once. There should be a ticket open to replace the underground line from here to the next upstream vault. These connections often sit underwater. They really should replace the vaults with pedestals, but that's not likely to happen. These cables were laid down sometime in the '70s, and they've been fixing them piecemeal for years. In any case, the Denver repair center has been involved for a few weeks. Once they got past the problem of the local office forcing the calls closed, there has been continual attention. The woman I work with out there has gone over and above, including staying after her shift in order to talk to various supervisors who work different shifts. Denver has definitely detected some things that they don't like, and they're pushing the field to get things cleaned up. Last night it got to the point where I was getting XRE-07002 messages. Unfortunately, that message is the X1 equivalent of a dumb look. It didn't really add much. I also saw the box power itself off and then on. It didn't reboot, or anything: it just acted like I'd hit the power switch. None of the other equipment in the house reported any power fluctuation. I wait through the night with hope in my soul.You're doing all the right things and having the Denver office personally involved is great!!! Your box powering off and on could be someone remotely trying to push something down to you or some other behind-the-scenes attempt at restoring your services... Keep up the good fight and don't stop until you're boxes are working flawlessly!!!!

IPhone 4 Signal/Battery Problem!!!!!

I dont know how to explain this but my signal(carrier) drops to NO SERVICE every
1-2 hours i think (im not sure).
And my battery drops 30% oovernight (NO wi-fi, Push notifications, indeed it was on airplane mode before i sleep)
But i have a feeling that this is because of the apple's updates? Because it all starts when i update mine to 4.0.2-4.1.0
Anyone having same problem. Anyone know how to fix this?

As far as I know I don't have any issues with the signals.
Yesterday I unplugged my iphone at 7 AM sharp, at 10 PM, I had 83% remaining so I decided not to charge my phone, so I put it on airplane mode close all my apps on the multi-tasking bar and I woke up this morning and it was still at 83%. So my battery did not drain overnight. Right now it's 4 PM where I live, and my usage stats reads 2 hours 58 min. and a standby time of 1 day 9 hours and my battery % is at 53. So from the time I woke up till now I only lost 30%. Normally I check my phone every hour.
Not to mention on Saturday night I had 21% remaining before charging. So here is what I did before I charged mine. I connected my iphone to itunes and synced my iphone, after it was complete, I did a hard reset by holding the home button and the sleep/wake (ignoring the red slider), I let go of both at the moment it shuts off, so that it won't turn on by itself. I then waited a couple of minute, then I let it charge overnight, so this is what I'm getting.
I'm using the 4.1.
I would suggest doing the same, connect to itunes, sync, hard reset and recharge, this surely helped improve my battery life. If this doesn't fix for you, then try full restore and see if that does any help.

How do I find the frequency of "hum" in a recording?

Hello,
I have some audio from a camcorder that is marred by a hum from the built-in microphone. It's not 60Hz since removing that made no difference. My question is - what tool would I use in Audition 3.01 to find the frequency (range) of a sound, a hum in this case, so that I can use say a notch filter to remove/minimize it? I tried using the spectral view but that didn't help. Maybe I'm missing the obvious, in which case please be kind to one less learned such as myself:) Any help would be greatly appreciated- thanks everyone!

>Normally hum is caused by a poorly shielded (or unshielded) microphone cable running near a transformer (external brick power supply).
a) There's no such thing as 'normal' where hum is concerned - I could easily give you many possibilities - the scenario you suggest isn't even particularly prevalent.
b) This isn't hum we are talking about here, but harmonic hash, and on top of that, it's in a camcorder. The cause? Quite frankly, all bets are off. As for your explanation of clipping causing the harmonic series - well, I don't know what planet you are living on, but in my
considerable experience of this phenomenon as an ex-mixer designer, I can tell you that this really has very little, if anything at all, to do with it.
If you actually want to know, most hum harmonics generation has more to do with earthing mismatches allowing induced leakage current from power supplies into signal-carrying tracks. In the case of conventional camcorders, it's different though - here you have several sources of interference involved in generating the relatively high levels of signal at the field repetition rate adjacent to the relatively sensitive mic input stages, and with the best will in the world, any linear-based signal recording is going to have a poor S/N ratio, and the noise floor is likely to have a lot of harmonics of 60Hz - because that's pretty much what gets generated within the casing at the highest levels, and it's pervasive. Clipping doesn't even get a look-in in this situation.

Buzz In Audio When Using DVI Output

I've had this problem for a while now, but everytime I plug in a monitor to the DVI port I get a horrible buzz out of my audio interface. I've tried everything: using different DVI cables and audio cables, using different audio interfaces, disconnecting everything except the necessary things, etc. and no matter what, the buzz comes when I plug something into the DVI port. I'm assuming that this has to do with the video card, I'm just wondering if anyone else has had problems like this.

Are the TV and the Mac plugged into different wall outlets in the room? It could be they are on widely different circuits, considering the wiring behind the wall, and that stray currents are flowing through the signal cables and upsetting the signals carried on those cables.
If the above is true, try plugging the TV into the same outlet as the Mac and see if things improve.

YUV OR VGA FOR EXTERNAL SCREEN

I want to use an external screen but my VGA input of the external screen is already busy by another computer, so guys tell me if YUV is as good in terms of quality audio/video than VGA ?

If your external display only has VGA and S-video inputs, then you will need a VGA switch (like one of these) to connect two computers with VGA outputs to your single display.
It is possible to convert a VGA output to S-Video with a converter (like this). However there will be significant degradation of the video quality. S-video is only standard def at either 480i or 576i resolution. At 480i (NTSC) the effective resolution is only 720x480 pixels and the S-video signal has considerably lower color signal carrying capacity than VGA..
You have not identified what model Mac you have, but if it's any recent Mac there are no adapters that can directly convert DVI/miniDVI or miniDisplayPort to S-video anyway. You would be doing a double-conversion from DVI, miniDVI, miniDisplayPort to VGA + VGA to S-video, resulting in significant loss of quality.
VGA and S-video are video interfaces/connections. They do not carry audio. Audio is a completely separate interface/connection.

AppleTV Connected/Won't Turn On

I'm trying to connect and use AppleTV on my SONY TV. All connections were made as per instructions. Using the AppleTV Remote, I can't seem to turn on AppleTV and have it show on my SONY Screen.

Is the white LED on the front of the AppleTV illuminated? If it's off you won't be able to see it. The LED is an AppleTV's only overt sign of life, other than the signal carried by its HDMI cable to your TV. VoiceOver audio will speak to you and provide setup instructions, even if you can't see any video.
It sounds as though you may need to tell your TV to use that input.
If it's brand new you can certainly contact Apple and have them walk you through its setup. It's free. To contact Apple use the Contact Us link below.

I need a doctor for broadband

I have no interest in music nor do I save more than a very modest collection of photos, thus I've been comfortable with running Panther on my PC3 600 MHz iBook. But recently, Comcast became available in my area and I do have a very large interest in shedding dial-up for broadband. I checked it out and was stunned to learn that Comcast requires a minimum of Tiger, Firefox 2 or Safari 2.
Have I got this right? Is it true I'll have to upgrade to 10.4? Is 10.4 worth the expenditure? Should I sell my wife's car and buy a MacBook or a set of tires for my car?

Well now, on this 15" with Panther, I have comcast working with an Apple Extreme WiFi as I type this. The 17" is hooked to it by ethernet. My daughter with her iBook sometimes comes over and uses it WiFi like I do with this one... she has Tiger. I have an old G3 in the den that has 10.1 and it can get on the 'high-speed' through the ethernet when I run the wire to it, the old Firefox is the browser, not the new one.
So, I would say that that requirement of comcast is false. (Except to be able to get to their web-site and pay your bill, or get web-mail... here you will need an up-to-date browser... I use Camino, it works wonderful with Panther)
Please note though that comcast does upgrades to their systems every so often and things change. Like once I could only have one computer on at a time, not two. Only one computer can be set to get their e-mail, if you change it, then the other one is blocked... until changed back. Password doesn't seem to matter, as of now, they have my main computers ID (or something like that) and it comes in without a password.
I was a bit ticked when only one computer could be on at a time, but with WiFi and the signal carrying to others in the neighborhood, I can see why they did it. Now with WPA on the WiFi, I can have multiple at the same time. They are all my computers and I am paying for there 'home' service... so!
But, no, you do not need Tiger, I even think Classic could get on with the right browser, even if all the security features are not in the older browsers.
Remember, you will have to get the service set-up by wired 'ethernet'... once it is, then WiFi should be able to be used. (With the name/password for the WPA)
It's better to set it up with one at comcast on the phone, as even if you have all the ID's and Passwords entered in, they have to do something on their end to allow you onto their server with it. I believe they should of had it all set for when I did my end, but it wasn't, they seem to had to confirm it was me doing it, perhaps something to do with paying the bill and 'actually' getting the service. (They are very security conscious... sometimes to being an annoyance.)

Open soruce code of Neural Network Model of the Cerebellum

I would like to share with the community the code of a Neural Network Model of the Cerebellum (CNN). I have been using the CNN for studying the cerebellum and for adaptive robot control. The CNN was developed using Object Oriented Programming (OOP) and a customized Address Event Representation (AER) format. Using OOP and AER allows the construction and evaluation of CNN with more than 80 k neurons, and more than 400 k synaptic connections in real time. The code includes the tools for creating the network, connecting synapses, create the AER format, and a demo for controlling a Virtual Model of a FAN.
The link to the Cerebellar Network: https://bitbucket.org/rdpinzonm/the-bicnn-model
Some details of the architecture of the cerebellar model:
In comparison with traditional ANN or RNN, the CNN has a very peculiar architecture with at least three layers (see below, Fig. 1). Inputs from the external world such as the position of the arms, legs, or sensors from a robot, are carried to the cerebellum via mossy fibers (mf). mfs are then processed in the input layer that includes Golgi (Go) and Granule cells (Gr). The ratio of Gr to mf is around 1000:1, whereas Go to Gr is 15000:1. Because of these numbers it has been proposed that the input layer of the cerebellum transform the input mfs into a sparse representation easing the work of the other layers. The second layer, the molecular layer that could be regarded as a hidden layer, includes Ba/St, Basket and Stellate cells. Their numbers are similar to Go, and their role is still a matter of debate. The last layer, the output layer, includes Purkinje cells (Pk). There are around 150.000 Gr per one Pk. This is a remarkable feature because the Pk is the only output of the cerebellar cortex. The output of the cerebellar cortex will eventualy reach the motor centers to correct movements. The CNN includes a plausible learning rule of the cerebellum at synapses between Gr and Pk. It works a an supervised anti-Hebbian rule or a anti-correlation rule in the following way: the teaching signal carrying the information about erroneous motions of the leg, arm, robot, etc, is conveyed by the climbing fiber (cf) to a single Pk. Then, the synaptic weights og Gr-Pk are decreased if there is both cf and Gr activity, whereas if there is not cf (i.e., error) the weights are increased. What this rule means, is that those Gr producing errors have their weight decreased, while those decreasing the error are promoted by increasing their weight.
Fig. 1. Neural Network Model of the Cerebellum. mf, Mossy fibers (inputs); Go, Golgi Cells; Gr, Granule cells; Ba/St, Basket and Stellate cells; Pk, Purkinje Cell (Sole output of the cerebellar cortex); cf, climbing fiber (teaching signal); pf, parallel fibers (synapses of pf-Pk are the only adjustable weights in this model, and main loci in the cerebellum); and IO, inferior olivary nucleus.
Cheers,
As you can see, the CNN has a very interesting and simple architecture with huge potential for adaptive controller. Do not hessitate in using the model, explore its code, adn post any thought, question, comment, issue. The labview project includes a demo for constructing a CNN and employ it in a classical fedback control of a DC FAN. Fig. 2-3 are some pictures of the application:
Fig 2. 3D construction of the CNN in LabVIEW representing a cube of the cerebellar cortex with edge length 100 um. Red mf, cyan Gr, green Go, yellow Ba/St, purple Pk.
Fig 3. Screen capture of the demo application in LabVIEW for the CNN used for controlling a Virtual Model of a DC FAN.
Thanks,

Hi gerh. Nice observation! Indeed there are many good softwares out there that are optimized for constructing neural network models. However, none of them have the flexibility and the capability of integration with Hardware that LabVIEW provides. You see, the CNN is being developed to be easily incorporated into engineering applications.
I haven't tried CV, but I think it could be possible to use the CNN with a 1D representation of the image.

O2 reception...problems

Hi All, I am having major problems with my iphone signal in the UK. All was fine until I went into an area with a bad signal about 2 months ago now the phone constantly is low on signal or has no signal at all. It seems its always trying to find the best signal/carrier... I keep getting messages saying the signal/network is lost please go to settings to rectify this.
In the settings menu I have the choice of choosing "automatic" for the carriers. All the available carriers are not always there as they are on my wifes phone.
Could this be a software problem? Its really frustrating...
Any sugestions?
Nick

You may be better making an appointment with Geniuses at an Apple Retail store .if they find a problem and you are out of warranty they will replace on the spot .....for c £139
Not many good reports of UK users letting O2 play with an iPhone with problems out of warranty ....takes weeks for starters

Sony DVDirect and FCP

I use a Sony DVDirect VRDVC20 to burn screening copies of shows for clients. It has composite, s-video, and FW video inputs. Normally I send FCP output to a converter box and use the s-video output from the converter box into the Sony unit. This works and the quality is fine but I'd like to use the FW input. The unit accepts a FW input from a DV camera, but when I use the FW output direct from FCP the unit doesn't recognize the signal. When I go into the FCP video ouput settings it shows "[missing]Apple FW NTSC." Sony says the unit is not supported by the MAC OS. How is the video signal carried by a FW cable from a camera different from the the FCP video signal coming out of the MAC via FW? There obviously is a difference between these signals. Is there a way around this, or is there a setting in FCP that I have wrong?

firewire is a bi directional communication protocol. If sony says it doesn't talk FCP it doesn't. There are a number of devices that do not play well with FCP.
I do not believe there are user controllable settings in FCP regarding Firewire other than
1. Firewire or Firewire BASIC '
2. Controllable or non-controllable devices.
Your recorder is a non-controllable device. Try that and see what happens.
x

Pin Suspend

Hi,
i'm bebek from indonesia, i need help for my blackberry...
i have Blackberry Curve 9300 3G with info:
**removed**
My Blackberry Curve 9300 3G had been Pin Suspend or Blockir, so i cannot use Blackberry Messenger and Register Blackberry ID.
Please help how to fix the pin suspend or Blockir and Register Blackberry ID?
So i can use my Blackberry in Normaly again...
Thanx,
Bebek
Removed personal information to comply with Community Guidelines and Terms and Conditions of Use.

Hello BillJ (Elite I),
My carrier using Telkomsel sim card, but the carrier is Ok. Because i put the Sim Card to other Blackberry Bold 9000 is No Problem, everything is fine can BBM. And i already using other carrier Indosat from Bold 9000 to the Curve 9300 Still Pin Suspend or Block cannot BBM. ( No Logo BB beside the Signal carrier)
i think the Problem is not from the carrier but from the Blackberry Server Center, can you check it out what's wrong with my Blackberry Curve 9300 3G (Pin Suspend or Block)??
Thanx,
Bebek

MSTP Timing

We have installed new MSTP systems. The documentation is very unclear on when timing is needed on MSTP. In fact, we have been told that transpondes do not need timing at all, for they recover timing from the Rx OC stream. Does anyone have any experience with timing and MSTP? Can I transport timing with the OSC's?
Thanks,
Tim

In order to fully answer your questions it is important to understand how timing works within an optical transport system. Timing is carried within the SONET (or SDH) Line overhead. Transponders only terminate the Section overhead bytes (A1, A2, B1, etc) for framing, error checking, and DCC between nodes thus they are incapable of being timed or providing timing to downstream equipment. In order to inject timing into an optical stream it must be done at a card where process Line overhead (such as an ADM). A signal carried by a transponder card must be timed prior to its introduction to the transponded network. This may seem an unwise or unfavorable practice but consider that in order for the transponder to be truly transparent to the traffic it carries this becomes necessary. The whole point of using transponders is to provide the customer with a protocol independent environment with which to transport signals between 2 points.
Timing is a function of multiplexing in order to allocate STS channels or timeslots for DS3 mapping or OC3c/OC12c/OC48c/OC192c aggregation and transport into larger SONET payloads (i.e. 4xOC48 signals muxed into 1xOC192 signal). The best analogy I have found for transponders is to compare them to Ethernet hubs as they are in effect a simple repeater.
DWDM cannot be timed as it is a physical medium for transporting signals, nothing more. The OSC is an out-of-band management channel that has no influence on the optical channels riding adjacent to it. The OSC will derive timing for itself from the shelf/node timing source.
Clay

Solid stone walls and BB repeater

I've just set up my BT Home hub (so easy!).
My previous set up was a Netgear Range Max at my the main computer and to overcome stone walls in my house I had a Netgear Wireless Access Point connected by ethernet cable to a Devolo dLan duo (broadband signal carried through the ring main). This enabled me to use WiFi devices further afield. The Wireless Access Point doesn't seem to recognise the BT hub.
Can anyone out there help please?
Thanks!

Hi
I think you may have to set your wireless Access points IP address to within the HH3 range - the netgear I believe has a different IP range.
Michael

UK Signal/carriers...?

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