I don’t have UartSB but I have FT232RL module (the same chip as UartSB). So, I connect and test with BPSBee+FT232 module+PC and tested with Hyper terminal and U-center also. Both test show only one "$GPTXT,01,01,02,u-blox ag - www.u-blo$GPTXT,01,01,02,u-blox ag - " string simultaneously.
Really, testing with GPSBee+MAX232+USBtoSerial adapter and GPSBee+FT232Module is the same. They both use virtual COM port. Anyway, I tested to confirm.
I know that what is NMEA message and how to decode it. I recently done a GPS base project and I wrote my own GPS lib for PIC.
I have update datasheet from http://www.u-blox.com/images/downloads/Product_Docs/NEO-6_DataSheet_%28GPS.G6-HW-09005%29.pdf
According to datasheet page-22, “Default Setting”, the GGA, GLL, GSA, GSV, RMC, VTG, TXT NMEA message should receive via UART pin-2 and pin-3 without any configuration. Just power up module and get these messages, very simple. But now, I get only one repeated string.
Finally, I tested my setup, GPSBee+MAX232+USBtoSerial adapter and GPSBee+FT232Module with other GPS module (GoTop) and German12XL gps. Both test work, shows NMEA strings and also work with U-Center.
My conclusion is that UART communication with GPSBee and PC via MAX232 or FT232RL is OK because one GPTXT… string is received simultaneously. But GPSBee cannot send required NMEA message like GGA, GLL.
Anyway, I give up on using this module.
If someone has solution or if I miss something or any useful thing, please kindly let me know.
Thank for your kindly advise and help.