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Why 2 antennas are used with scanner in 3G drive?
Hi,
Why do we use 2 antennae with the scanner in 3G drive?
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2011-02-19 02:22 PM
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Member
Reputation: 408
Re: Why 2 antennas are used with scanner in 3G drive?
Two Antennas??, One is GPS Receiver and the other is RF receiver.
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Re: Why 2 antennas are used with scanner in 3G drive?
there are 4 ports, 2 for RF receiver, 1 for GPS receiver and the 4th is for power..so why do we use 2 RF receivers?
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Re: Why 2 antennas are used with scanner in 3G drive?
I don't know which model is your scanner, but TEMS SRUs offer two antennas, second one is for diversity.
Originally Posted by
fon909
there are 4 ports, 2 for RF receiver, 1 for GPS receiver and the 4th is for power..so why do we use 2 RF receivers?
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Member
Reputation: 426
Re: Why 2 antennas are used with scanner in 3G drive?
Dual mode scanning (gsm(900/1800) + umts).
Last edited by Darko; 2011-02-19 at 08:43 PM
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Member
Reputation: 177
Re: Why 2 antennas are used with scanner in 3G drive?
Hi
I think you use pctel scanner. Pctel has got 4 ports,
RF1 is CDMA/3G/LTE scanner port
RF2 is GSM scanner port.
GPS port is for external GPS (We dont use gps port, because PCTEL Scanner connect to TEMS and TEMS has got a other GPS)
USB port is use for connect the scanner to PC
Originally Posted by
fon909
there are 4 ports, 2 for RF receiver, 1 for GPS receiver and the 4th is for power..so why do we use 2 RF receivers?
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Member
Reputation: 135
Re: Why 2 antennas are used with scanner in 3G drive?
RF1 is CDMA/3G/LTE scanner port ;RF2 is GSM scanner port.
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