I am trying to use a HL7650 module with ONLY the diversity antenna connection. I was under the impression that with the command AT+WMANTSEL=22 I would be disabling the main antenna and using on the diversity. However when I physically disconnect the main antenna, I do not get a network attachment.
Any idea what is going on? Note that everything works fine with the main antenna physically connected.
The command +WMANTSEL should be issued when the device is deregistered from the network. Please try the following :
Hi , yes I have done that and saved the setting to non-volatile memory with AT&W0. The setting persists over a device restart and definitely has the correct setting of AT+WMANTSEL=22 after reboot. However AT+COPS=0 leads to +CREG :3 with only the diversity antenna connected. It seems like the network is rejecting the connection for some reason?
Antenna diversity is a scheme that uses two or more antennas to improve the quality and reliability of a wireless link. I think you should have both antennas connected in your case.