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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...
Hi.
I used before already the sim900 and it worked fine.
So I used nearly the same circuit for the sim908 but the netlight is on all the time and nothing happens.
I checked already the powersupply and the ground and everything is fine. I get even an output from 0.35 Volt on the sim908 netlight...
Hi.
I created my own board with the sim900 and use it with my pc over the rs232 interface.
The module works fine but I have a big problem with the gsm location.
I ask for the coords like this:
AT+SAPBR=3,1,"Contype","GPRS"
OK
AT+SAPBR=3,1,"APN","CMNET"
OK
AT+SAPBR=1,1
OK
AT+SAPBR=2,1
OK...
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