Building Technologies
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TEL50.GSM
4.3 Connection of stilo antenna
The TEL50.GSM is supplied with its own dual band stilo antenna with the following characteristics:
PARAMETER
CHARACTERISTICS
Profile
Dual-Band GSM
900MHz band
890-960MHz
1,800MHz band
1710-1,880MHz
Impedance
50 ohm
WSVR
<= 1:1,5
Type
Omnidirectional
Radiation diagram on horizontal plane
Circular @ ± 0.5dB
Radiation diagram on vertical plane
± 35° @ 3dB
Connector
SMA (male)
4.4 Connection of external antenna (optional)
In the top part of the TEL50.GSM, there is an RF female SMA connector that is normally connected to the specially supplied
stilo antenna. Ensure that the antenna connector is securely fastened.
In some operating conditions, the stilo antenna does not permit optimum reception of the RF signal and, for this reason, the
TEL50.GSM can also be used with a high gain directive or omnidirectional external antenna (optional). If this is necessary,
remove the stilo antenna connector and connect the external antenna one.