EM7565 NMEA output sentences are duplicated

IoT Modules MC/EM Series
1

I use the command “screen /dev/ttyUSB1” and the output NMEA sentences are duplicated:

$GLGSV,2,1,08,81,07,021,29,72,30,323,33,74,30,236,70,37,158,179
$GLGSV,2,1,08,81,07,021,29,72,30,323,33,74,30,236,70,37,158,179
$GLGSV,2,2,08,82,04,066,73,77,289,80,30,039,71,80,268,17A
$GLGSV,2,2,08,82,04,066,73,77,289,80,30,039,71,80,268,17A
$GPGSV,3,1,10,03,40,292,32,23,11,302,34,25,16,040,37,29,16,077,24,165
$GPGSV,3,1,10,03,40,292,32,23,11,302,34,25,16,040,37,29,16,077,24,165
$GPGSV,3,2,10,31,72,029,21,14,56,108,16,23,192,22,45,262,16F
$GPGSV,3,2,10,31,72,029,21,14,56,108,16,23,192,22,45,262,16F
$GPGSV,3,3,10,26,52,180,32,34,118,161
$GPGSV,3,3,10,26,52,180,32,34,118,161
$GPGGA,220946.00,4351.487336,N,07921.782108,W,1,05,1.9,189.6,M,-41.0,M,51
$GPGGA,220946.00,4351.487336,N,07921.782108,W,1,05,1.9,189.6,M,-41.0,M,51
$GNGNS,220946.00,4351.487336,N,07921.782108,W,AAA,09,1.9,189.6,-41.0,V52
$GNGNS,220946.00,4351.487336,N,07921.782108,W,AAA,09,1.9,189.6,-41.0,V52
$GPVTG,336.3,T,344.1,M,0.0,N,0.0,K,A24
$GPVTG,336.3,T,344.1,M,0.0,N,0.0,K,A24
$GPRMC,220946.00,A,4351.487336,N,07921.782108,W,0.0,336.3,071218,7.8,W,A,V44
$GPRMC,220946.00,A,4351.487336,N,07921.782108,W,0.0,336.3,071218,7.8,W,A,V44
$GPGSA,A,2,03,23,25,29,31,2.1,1.9,0.9,120
$GPGSA,A,2,03,23,25,29,31,2.1,1.9,0.9,120
$GAGSA,A,2,04,30,2.1,1.9,0.9,338
$GAGSA,A,2,04,30,2.1,1.9,0.9,338
$GNGSA,A,2,03,23,25,29,31,2.1,1.9,0.9,13E
$GNGSA,A,2,03,23,25,29,31,2.1,1.9,0.9,13E
$GNGSA,A,2,72,81,2.1,1.9,0.9,23D
$GNGSA,A,2,72,81,2.1,1.9,0.9,23D
$GNGSA,A,2,2.1,1.9,0.92F
$GNGSA,A,2,2.1,1.9,0.92F
$GNGSA,A,2,2.1,1.9,0.92F
$GNGSA,A,2,2.1,1.9,0.92F
$GNGSA,A,2,04,30,2.1,1.9,0.9,337
$GNGSA,A,2,04,30,2.1,1.9,0.9,337
$PSTIS,*61
$PSTIS,*61

2

That was a bug introduced in firmware 01.07.02.00 which has been fixed in Rel. 12 firmware 01.08.04.00.