GSM Phone Antennas

Antenna Click Here to go to Mobile One's Range of GSM Band Antennas Antennas

Mobile One GSM antennas are designed for GSM/3G

WARNING

NOT ALL MOBILE PHONES WORK WITH EXTERNAL ANTENNAS

Find out before you purchase your phone!

Patch Leads

A patch lead is required in order to attach your phone to an external antenna, This patch lead is a special cable that is dedicated
to your particular model phone and should be available where you purchase your mobile phone. If you cannot obtain a suitable patch lead
contact us on 0246556677 we may be able to direct you to a source.

Some patch leads do not work

The external antenna uses a female FME connector that connects directly to your patch lead which in turn
connects to your mobile phone. The antenna needs to be connected directly to the phone in order to get
the best performance. If your phone antenna connection is through a hands free cradle and that cradle
uses "induction through  the cradle" ie: the patch lead is not connected directly to the phone then it will
not work well or if your phone has the patch lead connected to the top where the internal antenna is located
then it will not perform well. Feel free to call me on 02-46556677 9am to 5pm Mon to Fri if you need help.

Coax Cable

Cable lengths are criticle and Can reduce performance.

1. Keep the coax as short as possible.
2. Do not coil excess coax.
3. Extension leads are lossy.
4. Patch connections are lossy.
5. Your coax must be "RG58 Celfoil" or similar - Do not use CB coax.
6. By reducing the coax length you will get better performance.

Connectors

All mobile phone antennas use "FME" female connectors

Supplied with the antenna is an adapter, this adapter is usually attached to the end of the coax and can be easily removed by unscrewing of the fme crimp connector. These adapters are to connect to various car kits and other devices and are often just discarded, however there is often a situation where the adapter you have been supplied is not suitable for your installation. Now and then there can be confusion regarding the connectors, if so give us a call or e-mail us.

Some Do's & Don'ts regarding phone antennas

Do -  Use a GSM/3G antenna for a GSM phone and a NextG/3G antenna for a NextG phone.
Multi band antennas do not perform as good as single band antennas.
Do -  Use a spring if mounted on a bull bar - Some bull bars are ok but some can vibrate severely
The spring is important to absorb the vibration from the engine otherwise the antenna will eventually fail but it extremely important that you use the correct spring in the right position.
if you don't do this the antenna will eventually fall apart or worst damage your transceiver
Do -  Place the antenna high as possible - The higher the better the performance
The higher the gain the higher the antenna should be mounted, High gain antennas in low areas will not work well.
Don't -  Use extension leads unless absolutely necessary eg:Base Station applications
Don't -  Mount the antenna along side any metal object - As far away as possible or practical
Any metal object will absorb the radiation from the antenna, greatly reducing its performance, you should try for at least one metre distance
Don't -  Concern yourself with earthing the base - It makes no difference to performance
Earthing the base has no effect and will not improve performance

Please NOTE all mobile phone antennas are DC grounded and will show zero resistance when tested at the connector.
Installation Recommendations
The best way of installing a phone antenna is off the front passenger side of the vehicle using a Z Bracket rather than on the bull bar. Z brackets absorb vibration from the engine, also the antenna is often higher and you can utilize a shorter run of cable. If at all possible you should cut the cable to the required length and terminate with a new FME connector but keep in mind that once the cable is cut it cannot be effectively lengthened again.
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