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Sim908 Antenna and debugging

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GrinderFX

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Hi.
Can someone explain me how i have to use the gsm and gps antenna?
There are already rf connectors for both (gsm and gps) on the chip, but its possible to connect both antennas an pin 79 and 59.
Can i use the rf connectors without using pin 79 and 59?
If i use only the rf connectors, can i keep pin 79 and 59 open?
The datasheet is really small and not really helpful and there are nearly no information about the rf connectors.

And for what is gps/dbg-txd gps/dbg-rxd.
In the datasheet is written: For GPS NMEA information output, debbuging and upgrading firmware.

i cant see any other debugging interfaces, so is it for complete debugging or only for gps debugging?
 

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