Completely isolating a mobile phone

Sheesh - talk about irresponsible broadcasting.

Sylvia.

How did you check that you can hear the phone ring inside the completely closed can?

Sylvia.

Yep. They did, but I don't see it on their web pile:

Probably discontinued due to the low demand for RF proofing potato chips.

I actually used one of those bags for tuning pagers in about 1972. It sorta worked, but wasn't any fun. Try tuning something small while wearing welding gloves for a fair simulation. We later switched a home made RF shielded box, with aluminum on mylar foil gloves built in. After I left, they bought an aluminum semi-truck trailer, fitted the doors with copper fingers, installed HVAC, filtered the entry wires, and build a somewhat mobile screen room.

RF shielded "tent"

Sigh... I was hoping for a pyramid power tent.

What you need is a bucket of water.

I thought it should be obvious. The can rattles like hell when the vibrator goes off:)

Tony

Hmm... OK, I'll give you that one. I don't use mobile phones much - perhaps it shows.

Sylvia.

Don't worry Sylvia, I still consider yours one of the best brains on usenet:)

Tony

I wanna shield it from RF, not destroying it.

-- @~@ You have the right to remain silent. / v \ Simplicity is Beauty! /( _ )\ May the Force and farces be with you! ^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3 ???! ???! ???! ???! ???! ???! ????? (CSSA):

I think they dropped the line about five years ago, but some of it shows up on Ebay.

I've worked in real screened rooms, without air conditioning at the old Cincinatti Electronics plant (Glenndale-Milford Road)in the mid '70s. :(

Ditto. At Granger Assoc, we needed to build a temporary screen room in order to accurately tune and measure some radios. Instead of buying a proper Lindgren screen room, we built our own with lumber and brass screening material, which was much cheaper and easier to move if necessary. No finger stock on the door, but some foam behind the brass screening provided adequate spring action. The isolation wasn't perfect, but it worked. The screening gave the room access to the building air conditioner, so there was no overheating. Unfortunately, it became my office for a short while, resulting some rather bad jokes.

At Intech Inc, we had a shield transmitter burnin room. At the time, copper was relatively cheap, so the room was clad in copper sheet metal with no screening. I would hate to think what that would cost today. Heat buildup was substantial, so we used the thermal conductivity of the copper to move away much of the heat. The door leaked somewhat, so we contrived an arrangement that made it look (and weigh) like a bank vault door. That worked.

Destroy the phone or the RF? If the RF, you can neutralize the deterimental effects of RF using Orgonite stones.

When placed near a source of RF, they are known to aborb the harmful radiation, leaving only natural radio waves, which can then safely and easily be shielded with tin foil or absorbed in a carbon foam sponge.

Also see "gifting" with Orgonite:

These were in what had been a Crosley machine shop during W.W.-II, and the test equipment ran so hot that it was over 100F some nights. I worked second shift, so it was already geting hot from the day shift. I was doing QA work on the PRC-77 manpack radio. I prefered running the SATE, in it's aluminum computer booth, with the AC set at 68 F. The SATE system was controlled by a four bit Data General mini-computer.

I had enough new brass screening to build a proper shieleded room but it was lost in a rental warehouse when I got sick, 10 years ago. I am thinking about using two layers of foil back foam insulation to build one for my home shop. I had a box of phosper bronze finger stock that should be enough to seal the door, if it survived the last huricane.

At least you didn't have to wear your foil beanie at work. ;-)

You can't just stick your head in and microwave it. There's a door interlock to deal with.

The head must be severed to put it in with the door closed. Then, the whole microwaving thing becomes moot.

Undo half dozen screws - lift off cover - solder mains lead to transformer tags - insert head and hit wall socket switch.

Or just jam a couple of plastic forks in the door catch slots.