Mobile Phone Antenna

I have a t mobile g1 and I have no huge problem with signal... There are just one or two places I don't get a 3g signal. I've seen on eBay little chips that stick on under the battery that claim to boost signal... For £1 it seems worth a go but wondered if anyone has one and if they do the trick? Thanks in advance!

if it makes you believe that it works better.. .then I have a piece if paper I can sell you for a pound as well..

But the answer is NO.

Hold the phone by you finger tips,
so you hand does not mask the aerial in the back of the case,
and it will work better..

Put your hand all over it, and that blocks much of the signal...
The bit of paper in the phone makes no difference whatsoever..
but as you can't prove them wrong/you may believe it... and they have your money !

Similar story goes for all the mobile radiation shields...
they actually make things worse !
..no radiation.. no signal...no working phone.
So anything that stops the signal (rather like a hand) makes the phone work harder.. and the battery flatten faster ;)

2009-08-03 14:55:31 by Gary S

this phone is used in the movies kill bill 2
broken arrow its like if you want to talk then open the phone expand the antenna then u can talk i want to buy it can u help me in finding that model

Try this. http://www.gsmarena.com/

2009-01-21 08:56:48 by tijuemson

A GPS antenna is just a radio antenna tuned to pick up the GPS signals.
A GPS receiver is a device which takes GPS signals from an antenna and calculates its location (or technically the location of the antenna which picked up the signals).

Just about any consumer GPS receiver (including the ones in phones) will have a built in antenna but some have a socket so that you can connect a better external antenna to them if you want.

I'm never heard of a phone with just a GPS antenna and no GPS receiver, that would be very strange and pointless. If you have seen a phone that claims that then it is probably a mistake in the description.

2008-12-03 01:10:50 by nandan s r

Price: $99.99 $129.99

Omni-directional signal antenna receives signals from multiple cell towers
with all function features as cell phone, Menu driven interface for easy operation and configuration ( Texting message , Voice mail,caller ID displayed,Missed call,received call,dialed call and call durations,volume adjustable, choice of ring sounds, alarm ...ect. ) , SIM card supported. No cell phone radiation.
backlight LCD with status icons, With a back-up built-in rechargeable Lion battery, One AC Power Supply ( AC110-240V 50/60HZ DC5V 1A ),Size: 202*169*57mm (L*W*H)
Quad band Competiable for GMS 850/900/1800/1900MHz networks around the world.
Use like a desktop telephone but no need to install the land line. large, easy to read, Take it anywhere anytime as your cell phone.

I need a Technical explanation about it

http://www.galaxyphones.co.uk/mobile_pho nes_basics02.asp
see also :
www.hottconsultants.com/
pdf_files/dipoles-1.pdf

www.hottconsultants.com/pdf_files/
X-Word-1.pdf

2006-09-09 21:28:18 by Cherma

Actually, you have given enough information to calculate the amount of power that will reach you. The formular for Free Space Loss = 20 log d + 20 log f -147.55, where d is distance in meters and f is frequency in Hertz. Cell phones work at both 800 MHz and 1900 MHz in the US. So this comes to ~50dB for 800 MHz and ~60dB for 1900 MHz.

Normal cell tower (if it is fully loaded with all the carriers) will have 7 emitters, i.e. 2 for Verizon, 2 for Sprint, 2 for AT&T and 1 for Nextel. Using 200 W for each emitter will come to 1.4 kW of emission. Using the 50 dB attenuation will result in 1,400/100,000 W will reach you. This is about 10 mW or similar to Bluetooth power range. So let's compare this to a regular cell phone. US standard for handheld is 600 mW (Europe is using 1000 mW).

I guess, if some kids are willing to put 600 mW of microwave power right up against their heads for hours at a time, then it should be OK right? Then again, I think the kids are frying their brains for sure. Keep in mind that a microwave oven works at 1000 times the power and no one would ever consider sticking their head in a microwave oven for even a millisecond. But that's exactly what they are doing with a cellphone.

As far as the long term effect. It is up to you. If you think that wearing a Bluetooth headset all day long is OK (10 mW) then being 12 meters away from a cell tower should have about the same effect.

2007-05-18 12:44:39 by constant q