Using mobile phone as an internet radio

In article ,
Michael A. Terrell wrote:

"Dave Plowman (News)" wrote:

In article ,
Michael A. Terrell wrote:

Phil Hobbs wrote:

I've never had a package stolen, as far as I can recall.

Me, either. It's probably that their postal system won't come to
reasonable terms with the US postal system.

Other countries seem quite happy to use ordinary post to the UK. The US,
not. So explain that.


Sigh. Ask 'your' post office why the rates are so damn high. The
rates are agreed on between countries, and the British system is the
only that people constantly complain about. Likely high tarriffs on
imports from the US that are imposed on incoming goods.

Sigh. Try reading what was said. Most US companies refuse to send anything
to the UK by normal post. They insist on using a courier service. If the
fault was at the UK end, this would apply to all other countries sending
things here. I know logic isn't your strong point - at least compared to
your blind patriotism - but even then...

--
*Don't squat with your spurs on *

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
MB wrote:
The Americans do seem generally to be used to sending a lot by courier
when we would just put in the post.

Quite. And I was simply guessing at an explanation. Any better guesses
happily considered.

Tending to happen in the UK also
even though the Royal Mail / Parcelforce often give a better service and
of course do not charge extra to send further. There has been a big
campaign in the North of Scotland about companies charging extra for
many postcode areas.

It's what happens when private firms cherry pick the most profitable stuff.

--
*That's it! I‘m calling grandma!

Dave Plowman London SW
To e-mail, change noise into sound.

On 10/05/2012 07:47 PM, zzzzzzzzzz wrote:
On Fri, 05 Oct 2012 19:00:56 -0400, Phil Hobbs
wrote:

George Herold wrote:

On Oct 5, 2:51 pm, Jeff wrote:
On Thu, 04 Oct 2012 10:03:21 -0400, Phil Hobbs

wrote:
Yep. As I understand it (possible wrong), AC filaments break in the
middle, mostly from vibration flexing.

I don't think so, because there's no mechanism for that, as I said. The
wire is fully annealed at all times, so there's no possibility of
progressive fatigue failure.

Oscillating filament light bulb:
http://www.youtube.com/watch?v=t_DwwNVA-7Q
Whether the earths magnetic field is strong enough to induce such
oscillations is questionable.

While digging for the apparently mythical lifetime test data on
incandescent light bulbs, I've found numerous theories on why
filaments fail.

Grin, the internet as a 'fire hose' of information. I went searching
for something that contained "Philips tech. rev." and found a
reference to the following article,

H. Horster, E. Kauer and W. Lechner — The Burn-out Mechanism of
Incandescent Lamps Philips Technical Review 32,155-164, 1971.

It was referenced in "Illuminating Engineering - Page 32 - Google
Books"

But nothing about turn on failure... sigh.

Here is a patent by some of the same guys at Philips... lots of stuff
about the filament getting hottest in the middle.

http://www.freepatentsonline.com/3868159.html
(Actually a decently written patent.)

George H.

Tungsten evaporation, causing hot spots, is the most
common. One suggested that thermal cycling hardens the tungsten and
makes it brittle. Another suggested that the inrush current causes a
mechanical shock if it hits at the 60Hz peak, instead of at the zero
crossing. Yet another speculates that the temperature differential
between the hot filament, and the relatively cold mounting structure
may cause cracking.


I can believe that the filament is hottest in the middle. It's
furtherst from the support, so whatever conductive heat sinking there is
will be less, but more than that, it sees the radiative input from the
rest of the filament on both sides instead of just one.

Aren't the filaments welded to the elements at the ends? It would seem that
this would cause a narrowing. ISTR most filaments broken near the supports,
which would be counter to the hotter-in-the-middle theory.

The feedthroughs are made of Dumet, which is basically 42Ni stainless
with a borated copper coating to bind to the glass. It's much
lower-melting than the tungsten, so spot-welding them together shouldn't
affect the tungsten much.

A necked-down hot spot is a stress concentration point, and ones nearer
the support would have more mass hanging off them. When the filament
jumps at turn-on, hot spots at the ends will probably more torque applied.


My theory is that bulbs tend to fail when turned on because of the thermal
shock but only because they were about to fail anyway. Cycling, itself,
doesn't have a huge effect on longevity, certainly not a factor of two.

Sort of similar to the case of a long solenoid, whose B field at the
ends is half what it is in the middle.

Do they only burn out when energized? ;-)

I've never seen one burn out that wasn't energized. But you're the
big-iron transmitter guy. Gotta run, I have a bunch of guys coming to
the lab in a few minutes, and I have to start the coffee pot!

Cheers

Phil Hobbs


--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510

hobbs at electrooptical dot net
http://electrooptical.net

On 10/06/2012 04:28 AM, MB wrote:
On 06/10/2012 00:15, Phil Hobbs wrote:
"Dave Plowman (News)" wrote:

In article ,
Michael A. Terrell wrote:

Phil Hobbs wrote:

I've never had a package stolen, as far as I can recall.

Me, either. It's probably that their postal system won't come to
reasonable terms with the US postal system.

Other countries seem quite happy to use ordinary post to the UK. The US,
not. So explain that.


Probably the War of 1812.

Coming from Canada, I can tell you that the USPS is very nearly flawless
when compared with Canada Post. Those morons can't find their rear ends
with both hands and a map.


The Americans do seem generally to be used to sending a lot by courier
when we would just put in the post. Tending to happen in the UK also
even though the Royal Mail / Parcelforce often give a better service and
of course do not charge extra to send further. There has been a big
campaign in the North of Scotland about companies charging extra for
many postcode areas.


That's mostly a business etiquette thing, I think. Sending somebody a
bunch of business documents in the snail mail sort of says that their
input isn't that urgent. Letter mail here is also very secure IME.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510

hobbs at electrooptical dot net
http://electrooptical.net

On Fri, 05 Oct 2012 16:02:37 -0400, "Michael A. Terrell"
wrote:


Phil Hobbs wrote:

I've never had a package stolen, as far as I can recall.

Me, either. It's probably that their postal system won't come to
reasonable terms with the US postal system.

I've never had a package stolen from the USPS, but I *have*
had one stolen from UPS.

Back in 1974 I had some stereo equipment stolen in a
break-in, and ordered a replacement to be sent UPS. The
shipment arrived while I was at work, so they left a note
that they'd try the next day. I called and said I'd pick it
up from their office after I got off work.

It was December, so there was a long line. After an
interminable wait, they said they didn't have the package...
must've gone out for delivery again by mistake. Got home,
no note. Called again and repeated everything the next day.

They finally admitted that they couldn't find the package,
and blamed it on the seasonal help. They eventually paid
for a replacement, after a lot of paperwork.

In all the years since, though, I've never had a problem.
(Of course, I became gun-shy about ordering "good stuff" in
December!)

Best regards,


Bob Masta

DAQARTA v7.10
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Scope, Spectrum, Spectrogram, Sound Level Meter
Frequency Counter, Pitch Track, Pitch-to-MIDI
FREE Signal Generator, DaqMusic generator
Science with your sound card!

In article ,
Phil Hobbs wrote:
The Americans do seem generally to be used to sending a lot by courier
when we would just put in the post. Tending to happen in the UK also
even though the Royal Mail / Parcelforce often give a better service
and of course do not charge extra to send further. There has been a
big campaign in the North of Scotland about companies charging extra
for many postcode areas.


That's mostly a business etiquette thing, I think. Sending somebody a
bunch of business documents in the snail mail sort of says that their
input isn't that urgent. Letter mail here is also very secure IME.

Fine if 'they' want to do this and pay for it. My complaint is buying
goods from the US where I'm paying the P&P and not having the choice of a
reasonably priced service. Why would I want to pay in some cases more than
the value of the goods for postage, if I'm in no rush to receive them?

--
*A conclusion is the place where you got tired of thinking *

Dave Plowman London SW
To e-mail, change noise into sound.

On 10/06/2012 09:08 AM, Dave Plowman (News) wrote:
In ,
Phil wrote:
The Americans do seem generally to be used to sending a lot by courier
when we would just put in the post. Tending to happen in the UK also
even though the Royal Mail / Parcelforce often give a better service
and of course do not charge extra to send further. There has been a
big campaign in the North of Scotland about companies charging extra
for many postcode areas.


That's mostly a business etiquette thing, I think. Sending somebody a
bunch of business documents in the snail mail sort of says that their
input isn't that urgent. Letter mail here is also very secure IME.

Fine if 'they' want to do this and pay for it. My complaint is buying
goods from the US where I'm paying the P&P and not having the choice of a
reasonably priced service. Why would I want to pay in some cases more than
the value of the goods for postage, if I'm in no rush to receive them?


Dunno. It may have something to do with package tracking and fraudulent
claims for loss or damage. The logistics companies give you one
tracking number that works anywhere in the world, whereas the post
offices all generate confusion and duplicated numbers that make it very
hard to establish whether something got delivered, and if not, where it
went.

Here, there's lots of competition in logistics, so the service is
generally excellent and the cost very reasonable.

US postal rates are also quite low, which may make it more difficult for
them to negotiate a revenue sharing agreement with higher cost
organizations. (Canada Post is the example I'm most familiar with--at
one point quite recently, all mail from the US to Canada had to go
through the central Toronto sorting facility, even if it was a letter
sent from Vancouver to Seattle.)

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510

hobbs at electrooptical dot net
http://electrooptical.net

On Sat, 06 Oct 2012 07:06:22 -0400, Phil Hobbs
wrote:

On 10/05/2012 07:47 PM, zzzzzzzzzz wrote:
On Fri, 05 Oct 2012 19:00:56 -0400, Phil Hobbs
wrote:

George Herold wrote:

On Oct 5, 2:51 pm, Jeff wrote:
On Thu, 04 Oct 2012 10:03:21 -0400, Phil Hobbs

wrote:
Yep. As I understand it (possible wrong), AC filaments break in the
middle, mostly from vibration flexing.

I don't think so, because there's no mechanism for that, as I said. The
wire is fully annealed at all times, so there's no possibility of
progressive fatigue failure.

Oscillating filament light bulb:
http://www.youtube.com/watch?v=t_DwwNVA-7Q
Whether the earths magnetic field is strong enough to induce such
oscillations is questionable.

While digging for the apparently mythical lifetime test data on
incandescent light bulbs, I've found numerous theories on why
filaments fail.

Grin, the internet as a 'fire hose' of information. I went searching
for something that contained "Philips tech. rev." and found a
reference to the following article,

H. Horster, E. Kauer and W. Lechner — The Burn-out Mechanism of
Incandescent Lamps Philips Technical Review 32,155-164, 1971.

It was referenced in "Illuminating Engineering - Page 32 - Google
Books"

But nothing about turn on failure... sigh.

Here is a patent by some of the same guys at Philips... lots of stuff
about the filament getting hottest in the middle.

http://www.freepatentsonline.com/3868159.html
(Actually a decently written patent.)

George H.

Tungsten evaporation, causing hot spots, is the most
common. One suggested that thermal cycling hardens the tungsten and
makes it brittle. Another suggested that the inrush current causes a
mechanical shock if it hits at the 60Hz peak, instead of at the zero
crossing. Yet another speculates that the temperature differential
between the hot filament, and the relatively cold mounting structure
may cause cracking.


I can believe that the filament is hottest in the middle. It's
furtherst from the support, so whatever conductive heat sinking there is
will be less, but more than that, it sees the radiative input from the
rest of the filament on both sides instead of just one.

Aren't the filaments welded to the elements at the ends? It would seem that
this would cause a narrowing. ISTR most filaments broken near the supports,
which would be counter to the hotter-in-the-middle theory.

The feedthroughs are made of Dumet, which is basically 42Ni stainless
with a borated copper coating to bind to the glass. It's much
lower-melting than the tungsten, so spot-welding them together shouldn't
affect the tungsten much.

Welding5 is welding. Metal has to flow, no?

A necked-down hot spot is a stress concentration point, and ones nearer
the support would have more mass hanging off them. When the filament
jumps at turn-on, hot spots at the ends will probably more torque applied.

My theory is that bulbs tend to fail when turned on because of the thermal
shock but only because they were about to fail anyway. Cycling, itself,
doesn't have a huge effect on longevity, certainly not a factor of two.

Sort of similar to the case of a long solenoid, whose B field at the
ends is half what it is in the middle.

Do they only burn out when energized? ;-)

I've never seen one burn out that wasn't energized.

OK, perhaps I sh6ould have said *as* they-re energized (to keep th6e corollary
with light bulbs burning out when turned on).

But you're the big-iron transmitter guy.
^^^^^^^^^^^

Huh? I think you have me confused with someone else.

Gotta run, I have a bunch of guys coming to
the lab in a few minutes, and I have to start the coffee pot!

Most important. Get the good stuff.

On Sat, 06 Oct 2012 09:28:03 +0100, MB wrote:

On 06/10/2012 00:15, Phil Hobbs wrote:
"Dave Plowman (News)" wrote:

In article ,
Michael A. Terrell wrote:

Phil Hobbs wrote:

I've never had a package stolen, as far as I can recall.

Me, either. It's probably that their postal system won't come to
reasonable terms with the US postal system.

Other countries seem quite happy to use ordinary post to the UK. The US,
not. So explain that.


Probably the War of 1812.

Coming from Canada, I can tell you that the USPS is very nearly flawless
when compared with Canada Post. Those morons can't find their rear ends
with both hands and a map.


The Americans do seem generally to be used to sending a lot by courier
when we would just put in the post.

"Courier"? Do you mean "next day" services like FedEx and UPS? Yes, often
time is money. "Couriers" are sometimes (rarely) used for intra'-city
delivery when hours count. Intrest on a megabuck pays for courier service.

Tending to happen in the UK also
even though the Royal Mail / Parcelforce often give a better service and
of course do not charge extra to send further. There has been a big
campaign in the North of Scotland about companies charging extra for
many postcode areas.

Your point?

On 10/06/2012 11:14 AM, zzzzzzzzzz wrote:
On Sat, 06 Oct 2012 07:06:22 -0400, Phil Hobbs
wrote:

On 10/05/2012 07:47 PM, zzzzzzzzzz wrote:
On Fri, 05 Oct 2012 19:00:56 -0400, Phil Hobbs
wrote:

George Herold wrote:

On Oct 5, 2:51 pm, Jeff wrote:
On Thu, 04 Oct 2012 10:03:21 -0400, Phil Hobbs

wrote:
Yep. As I understand it (possible wrong), AC filaments break in the
middle, mostly from vibration flexing.

I don't think so, because there's no mechanism for that, as I said. The
wire is fully annealed at all times, so there's no possibility of
progressive fatigue failure.

Oscillating filament light bulb:
http://www.youtube.com/watch?v=t_DwwNVA-7Q
Whether the earths magnetic field is strong enough to induce such
oscillations is questionable.

While digging for the apparently mythical lifetime test data on
incandescent light bulbs, I've found numerous theories on why
filaments fail.

Grin, the internet as a 'fire hose' of information. I went searching
for something that contained "Philips tech. rev." and found a
reference to the following article,

H. Horster, E. Kauer and W. Lechner — The Burn-out Mechanism of
Incandescent Lamps Philips Technical Review 32,155-164, 1971.

It was referenced in "Illuminating Engineering - Page 32 - Google
Books"

But nothing about turn on failure... sigh.

Here is a patent by some of the same guys at Philips... lots of stuff
about the filament getting hottest in the middle.

http://www.freepatentsonline.com/3868159.html
(Actually a decently written patent.)

George H.

Tungsten evaporation, causing hot spots, is the most
common. One suggested that thermal cycling hardens the tungsten and
makes it brittle. Another suggested that the inrush current causes a
mechanical shock if it hits at the 60Hz peak, instead of at the zero
crossing. Yet another speculates that the temperature differential
between the hot filament, and the relatively cold mounting structure
may cause cracking.


I can believe that the filament is hottest in the middle. It's
furtherst from the support, so whatever conductive heat sinking there is
will be less, but more than that, it sees the radiative input from the
rest of the filament on both sides instead of just one.

Aren't the filaments welded to the elements at the ends? It would seem that
this would cause a narrowing. ISTR most filaments broken near the supports,
which would be counter to the hotter-in-the-middle theory.

The feedthroughs are made of Dumet, which is basically 42Ni stainless
with a borated copper coating to bind to the glass. It's much
lower-melting than the tungsten, so spot-welding them together shouldn't
affect the tungsten much.

Welding5 is welding. Metal has to flow, no?

Sure, but not the tungsten, just the steel. The melting point
difference is more than that between copper and solder, so it's more
like brazing than normal welding.


A necked-down hot spot is a stress concentration point, and ones nearer
the support would have more mass hanging off them. When the filament
jumps at turn-on, hot spots at the ends will probably more torque applied.

My theory is that bulbs tend to fail when turned on because of the thermal
shock but only because they were about to fail anyway. Cycling, itself,
doesn't have a huge effect on longevity, certainly not a factor of two.

Sort of similar to the case of a long solenoid, whose B field at the
ends is half what it is in the middle.

Do they only burn out when energized? ;-)

I've never seen one burn out that wasn't energized.

OK, perhaps I sh6ould have said *as* they-re energized (to keep th6e corollary
with light bulbs burning out when turned on).

But you're the big-iron transmitter guy.
^^^^^^^^^^^

Huh? I think you have me confused with someone else.

Gotta run, I have a bunch of guys coming to
the lab in a few minutes, and I have to start the coffee pot!

Most important. Get the good stuff.

Stew Leonard's Espresso Roast, roasted fresh daily in sunny Yonkers.
Best beans I've ever come across, and worth the trip. Always a crowd
pleaser.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510

hobbs at electrooptical dot net
http://electrooptical.net