Best phone or carrier suggestion for a person who works in a Lead Lined Room

No joke, and no, he isn't superman. Seems he and his team, work at area
hospitals, and while Nextel worked best for him, still not good enough in a
lead lined room. His pagers, low frequency he offered, seem to have no
problem working in these lead lined rooms. So he asked me: which carrier
would work best? Although my obvious answer was "none" I offered to bounce
it off the masses.

Has anyone's line of work taken them into a lead lined room, and did your
cell phone get a signal in there (Radiology I imagine). What carrier has
the phone/technology/frequency that tolerates a lead lined room.

I did suggest that if he really needed a signal, we could connect a wilson
antenna/amplifier, and wire it thru the wall somehow safely. But more than
likely, that solution would be carrier and frequency specific. But he
wanted to try the "what if" method first. We aim to please. dr
--
dr.news Better Price? (not better than you deserve, just more than you are
used to)
If I can help: [email protected]te-the-obvious or thru this
notes forum.
home of the better priced phone and service:
http://free.better-price.biz

---

› See More: Best phone or carrier suggestion for a person who works in a Lead Lined Room

In news:[email protected]
"[email protected]" <[email protected]> wrote:

> No joke, and no, he isn't superman.

I'd suggest almost anything from the Western Electric 2500 series, maybe
even the 500 series if things are really bad.

--
Bert Hyman St. Paul, MN [email protected]

"Harry"
|
| If they get anything while inside a lead lined room they need to call
| the lead liner guy back to fix his shoddy job.

Actually a lead lined room can be impervious to x-rays but not to other EMF.

Hint the design and physics involved in a lead lined room are different than
those of a screen room.

[email protected]am wrote:
> No joke, and no, he isn't superman. Seems he and his team, work at area
> hospitals, and while Nextel worked best for him, still not good enough in a
> lead lined room. His pagers, low frequency he offered, seem to have no
> problem working in these lead lined rooms. So he asked me: which carrier
> would work best? Although my obvious answer was "none" I offered to bounce
> it off the masses.

His pager may work because a paging transmitter may be on site. I know
that is the case at a local hospital. They installed a high powered 30
MHz transmitter years ago so the pagers would work throughout the hospital.

>
> Has anyone's line of work taken them into a lead lined room, and did your
> cell phone get a signal in there (Radiology I imagine). What carrier has
> the phone/technology/frequency that tolerates a lead lined room.
>
> I did suggest that if he really needed a signal, we could connect a wilson
> antenna/amplifier, and wire it thru the wall somehow safely. But more than
> likely, that solution would be carrier and frequency specific. But he
> wanted to try the "what if" method first. We aim to please. dr

In article <[email protected]>,
Harry <[email protected]> wrote:

> On Sun, 26 Jun 2005 00:49:30 -0400, "NotMe" <[email protected]> wrote:
>
> >"Harry"
> >|
> >| If they get anything while inside a lead lined room they need to call
> >| the lead liner guy back to fix his shoddy job.
> >
> >Actually a lead lined room can be impervious to x-rays but not to other EMF.
> >
> >Hint the design and physics involved in a lead lined room are different than
> >those of a screen room.
> >
>
> I would think it the other way around. A screen room can be
> impervious to radio but may not stop X-rays. Screen will block the
> long wavelength radio waves. The shorter X-rays will pass right
> through it. Solid lead will block X-ray, UV, visible light, IR and
> radio. Gamma might make it... not sure on that one.

Shielding against ionizing radiation (X-rays) is dependent upon mass and
the "size" of the atoms that make it up. Lead has fairly "big" atoms,
and is very heavy.

Shielding against non-ionizing electromagnetic radiation is dependent on
the conductivity of the material, and will work well if there are no
apertures in it larger than a quarter of a wavelength or so. That's how
it's possible to make microwave ovens with doors you can see through.

Lead is a poor conductor (unless you get it really, really cold), so
it's not as good a shield for "radio" waves. That's why screen rooms are
made of copper.

isw

Harry wrote:
>
> On Sun, 26 Jun 2005 11:44:37 -0700, Isaac Wingfield <[email protected]>
> wrote:
>
> >Shielding against ionizing radiation (X-rays) is dependent upon mass and
> >the "size" of the atoms that make it up. Lead has fairly "big" atoms,
> >and is very heavy.
> >
> >Shielding against non-ionizing electromagnetic radiation is dependent on
> >the conductivity of the material, and will work well if there are no
> >apertures in it larger than a quarter of a wavelength or so. That's how
> >it's possible to make microwave ovens with doors you can see through.
> >
> >Lead is a poor conductor (unless you get it really, really cold), so
> >it's not as good a shield for "radio" waves. That's why screen rooms are
> >made of copper.
>
> Lead my be a not as good a conductor as copper but to say it is a poor
> conductor is flat out wrong.

Lead isn't a poor conductor, it's a TERRIBLE conductor!

Notan

Notan wrote:
> Harry wrote:
>>
>> On Sun, 26 Jun 2005 11:44:37 -0700, Isaac Wingfield <[email protected]>
>> wrote:
>>> Lead is a poor conductor (unless you get it really, really cold), so
>>> it's not as good a shield for "radio" waves. That's why screen rooms are
>>> made of copper.

Lead has other problems that make it unsuitable for use in a screen room:
cost, too soft, environmentally hazardous, etc.


>> Lead my be a not as good a conductor as copper but to say it is a poor
>> conductor is flat out wrong.
>
> Lead isn't a poor conductor, it's a TERRIBLE conductor!


Everything is relative.
http://www.mindbranch.com/reports/pdfs/R2-708Sample.pdf
shows that lead has about 1/12th the conductivity of copper.
That is significant mainly in high amperage circuits. You could
compensate by making the lead conductor 12 times more massive than
a copper wire, but it certainly wouldn't be cost effective. For a typical
high impedance signal circuit the poorer conductivity of lead would not
be a factor.

--
John Richards, BSEE

>
> Lead isn't a poor conductor, it's a TERRIBLE conductor!
>
> Notan

So why are the battery terminals in my car made of lead?

High wrote:
>
> >
> > Lead isn't a poor conductor, it's a TERRIBLE conductor!
> >
> > Notan
>
> So why are the battery terminals in my car made of lead?

See John's post and http://tinyurl.com/bm8hq ("The typical lead-acid
battery has a jar, top cover with vents (both Wet and VRLA), watering
opening with cover, and battery posts. Due to chemical compatibility
considerations, the battery posts and terminals are made out of lead
or a lead alloy.")

Notan

"[email protected]" <[email protected]> wrote in
message news:[email protected]...
> No joke, and no, he isn't superman. Seems he and his team, work at area
> hospitals, and while Nextel worked best for him, still not good enough in
> a lead lined room.

People aren't suppose to be using cell phones or other radio transmitting
devices in hospitals anyway. It can interfere with the medical equipment.
Tell him his one-way pager is best.

-Jeff

As long as we are off-topic: there is a new revolution of battery on the
horizon. And oddly enough it starts in Peoria, Illinois. dr

Peoria, IL - June 22, 2005 - Now beginning its third year of business since
its spin-out from Caterpillar Inc. under the Peoria NEXT initiative, Firefly
Energy Inc. today announced the company has entered into an agreement to
develop and produce its revolutionary battery technology on an exclusive
basis for select upcoming outdoor lawn products sold by Electrolux Outdoor
Products .

--
dr.news Better Price? (not better than you deserve, just more than you are
used to)
If I can help: [email protected]te-the-obvious or thru this
notes forum.
home of the better priced phone and service:
http://free.better-price.biz




"Notan" <[email protected]> wrote in message
news:[email protected]...
> High wrote:
>>
>> >
>> > Lead isn't a poor conductor, it's a TERRIBLE conductor!
>> >
>> > Notan
>>
>> So why are the battery terminals in my car made of lead?
>
> See John's post and http://tinyurl.com/bm8hq ("The typical lead-acid
> battery has a jar, top cover with vents (both Wet and VRLA), watering
> opening with cover, and battery posts. Due to chemical compatibility
> considerations, the battery posts and terminals are made out of lead
> or a lead alloy.")
>
> Notan

Jeff P wrote:
> People aren't suppose to be using cell phones or other radio transmitting
> devices in hospitals anyway. It can interfere with the medical equipment.
> Tell him his one-way pager is best.

Then one hears about the hospital that had the pager transmitter on the
roof so the doctors' pagers would work in all parts of the hospital......

In article <[email protected]>,
"Jeff P" <[email protected]> wrote:

> "[email protected]" <[email protected]> wrote in
> message news:[email protected]...
> > No joke, and no, he isn't superman. Seems he and his team, work at area
> > hospitals, and while Nextel worked best for him, still not good enough in
> > a lead lined room.
>
> People aren't suppose to be using cell phones or other radio transmitting
> devices in hospitals anyway. It can interfere with the medical equipment.
> Tell him his one-way pager is best.

If medical equipment is so poorly designed and fragile that the
*accidental* use of a cell phone by some innocent person could cause it
to malfunction, then the manufacturers should be sued for incompetence.

Isaac

In news:[email protected],
Jeff P <[email protected]> typed:
> "[email protected]" <[email protected]>
> wrote in message
> news:[email protected]...
>> No joke, and no, he isn't superman. Seems he and his team, work at
>> area hospitals, and while Nextel worked best for him, still not good
>> enough in a lead lined room.
>
> People aren't suppose to be using cell phones or other radio
> transmitting devices in hospitals anyway. It can interfere with the
> medical equipment. Tell him his one-way pager is best.
>
> -Jeff


Seems to depend on the hospital. Last time I was visiting in the local
hospital - I walked thru the Cardiac Intensive Care Unit talking on my cell
phone and noticed several other people talking on their phones. No one said
anything. In the rooms the nurses wrote their cell phone number on the board
so the patients could call them if they needed something.
The cell tower right next to the hospital would cause a lot more
interference than a low powered phone.

Isaac Wingfield wrote:
>
> In article <[email protected]>,
> "Jeff P" <[email protected]> wrote:
>
> > "[email protected]" <[email protected]> wrote in
> > message news:[email protected]...
> > > No joke, and no, he isn't superman. Seems he and his team, work at area
> > > hospitals, and while Nextel worked best for him, still not good enough in
> > > a lead lined room.
> >
> > People aren't suppose to be using cell phones or other radio transmitting
> > devices in hospitals anyway. It can interfere with the medical equipment.
> > Tell him his one-way pager is best.
>
> If medical equipment is so poorly designed and fragile that the
> *accidental* use of a cell phone by some innocent person could cause it
> to malfunction, then the manufacturers should be sued for incompetence.

This topic has been discussed, and discussed, and discussed.

One of the problems is that some equipment is older than newer
cell phone technology.

If you find this fact troublesome, stay away from hospitals! <g>

Notan