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fon909
2011-02-19, 04:22 PM
Hi,

Why do we use 2 antennae with the scanner in 3G drive?

mike
2011-02-19, 05:17 PM
Two Antennas??, One is GPS Receiver and the other is RF receiver.

fon909
2011-02-19, 07:37 PM
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?

Rooster[BG]
2011-02-19, 08:02 PM
I don't know which model is your scanner, but TEMS SRUs offer two antennas, second one is for diversity.


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?

Darko
2011-02-19, 08:37 PM
Dual mode scanning (gsm(900/1800) + umts).

sonerss
2011-02-19, 09:02 PM
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

http://www.finetopix.com/picture.php?albumid=60&pictureid=76


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?

linuxxcso
2011-02-21, 12:07 AM
RF1 is CDMA/3G/LTE scanner port ;RF2 is GSM scanner port.