Chapter 7

Antenna connections:
The most important factor that will effect the receive and transmit signal of a phone connected to an external antenna is type of connection. There are two connections for the antenna: the connection to the cellular phone and the connection of the antenna to the co-ax cable. On the phone side there two types of connections, some phones have an antenna jack on them that is accessible and the antenna connection is made directly to this antenna jack. Some phones do not have an antenna jack on them and the signal must be transferred from the phone to the antenna cable capacitively using either a "ring type" or "holder type" antenna connector.

The type of connection between the external antenna and the co-ax antenna cable is also equally important. Magnetic mount and through-hole antennas have the antenna cable directly connected to the antenna base. Glass mount (onglass) antennas do not make a direct connection and transfer the signal between the antenna and co-ax cable capacitively.

The difference in performance of the phone will be vastly better when using a"direct connect antenna" with a phone that has a "direct connect" antenna jack on it than when using a phone or antenna that uses a non-direct capacitive method of signal transfer. For example: a phone with a capacitive antenna connection using a glass mounted antenna will have so much loss that one would be better off not using this external antenna. If one was to use a booster under these conditions, an improvement in performance can be achieved but it would be small when compared to using the same booster with another type of phone connection or antenna.