2018-05-23, 09:13 AM
(This post was last modified: 2018-05-23, 11:00 AM by waldmattis.)
Good morning.
I have an USB-AIS-receiver
NooElect R820T2 SDR and DVB-T
NESDR Mini 2+
for use with OpenPlotter/ OpenCPN.
What must I fill in the form of SDR receiver at
- gain
- correction ppm
With the OpenPlotter-tool SDR receiver I tested it in GSM 900 band and got the following results
sample rate: 2047972 current PPM: -13 cumulative PPM: -71
real sample rate: 2048012 current PPM: 6 cumulative PPM: -71
real sample rate: 2047997 current PPM: -1 cumulative PPM: -71
real sample rate: 2047986 current PPM: -7 cumulative PPM: -71
real sample rate: 2047980 current PPM: -9 cumulative PPM: -71
real sample rate: 2047892 current PPM: -52 cumulative PPM: -71
real sample rate: 2048124 current PPM: 61 cumulative PPM: -71
real sample rate: 2047993 current PPM: -3 cumulative PPM: -71
real sample rate: 2047976 current PPM: -11 cumulative PPM: -71
real sample rate: 2048022 current PPM: 11 cumulative PPM: -71
real sample rate: 2047996 current PPM: -2 cumulative PPM: -71
real sample rate: 2047966 current PPM: -16 cumulative PPM: -71
real sample rate: 2047993 current PPM: -3 cumulative PPM: -71
real sample rate: 2048024 current PPM: 12 cumulative PPM: -71
real sample rate: 2047992 current PPM: -4 cumulative PPM: -71
real sample rate: 2047997 current PPM: -1 cumulative PPM: -71
real sample rate: 2047985 current PPM: -7 cumulative PPM: -71
real sample rate: 2048012 current PPM: 6 cumulative PPM: -70
real sample rate: 2047995 current PPM: -2 cumulative PPM: -70
real sample rate: 2047944 current PPM: -27 cumulative PPM: -70
real sample rate: 2047996 current PPM: -2 cumulative PPM: -70
real sample rate: 2048006 current PPM: 3 cumulative PPM: -70
real sample rate: 2047953 current PPM: -23 cumulative PPM: -70
real sample rate: 2048082 current PPM: 40 cumulative PPM: -70
real sample rate: 2047970 current PPM: -14 cumulative PPM: -70
real sample rate: 2048204 current PPM: 100 cumulative PPM: -70
real sample rate: 2047797 current PPM: -99 cumulative PPM: -70
real sample rate: 2048155 current PPM: 76 cumulative PPM: -70
real sample rate: 2047767 current PPM: -113 cumulative PPM: -70
real sample rate: 2048257 current PPM: 126 cumulative PPM: -70
real sample rate: 2047821 current PPM: -87 cumulative PPM: -70
real sample rate: 2047984 current PPM: -7 cumulative PPM: -70
lost at least 44 bytes
real sample rate: 2047658 current PPM: -167 cumulative PPM: -70
real sample rate: 2048085 current PPM: 42 cumulative PPM: -70
lost at least 148 bytes
real sample rate: 2047590 current PPM: -200 cumulative PPM: -70
lost at least 176 bytes
real sample rate: 2047532 current PPM: -228 cumulative PPM: -70
lost at least 80 bytes
lost at least 12 bytes
real sample rate: 2045953 current PPM: -1000 cumulative PPM: -71
real sample rate: 2047998 current PPM: -1 cumulative PPM: -71
lost at least 64 bytes
real sample rate: 2047287 current PPM: -348 cumulative PPM: -71
lost at least 156 bytes
real sample rate: 2046656 current PPM: -656 cumulative PPM: -71
real sample rate: 2048068 current PPM: 34 cumulative PPM: -71
real sample rate: 2047967 current PPM: -16 cumulative PPM: -71
real sample rate: 2048004 current PPM: 2 cumulative PPM: -71
lost at least 228 bytes
real sample rate: 2047516 current PPM: -236 cumulative PPM: -71
real sample rate: 2048279 current PPM: 136 cumulative PPM: -71
real sample rate: 2047788 current PPM: -103 cumulative PPM: -71
real sample rate: 2048024 current PPM: 12 cumulative PPM: -71
real sample rate: 2047998 current PPM: -1 cumulative PPM: -71
real sample rate: 2048000 current PPM: 0 cumulative PPM: -71
real sample rate: 2048047 current PPM: 23 cumulative PPM: -71
real sample rate: 2048014 current PPM: 7 cumulative PPM: -71
lost at least 36 bytes
real sample rate: 2047930 current PPM: -34 cumulative PPM: -71
What must I fill in the form of SDR receiver at
- gain
- correction ppm
Thanks for help.
regards
Karl
I have an USB-AIS-receiver
NooElect R820T2 SDR and DVB-T
NESDR Mini 2+
for use with OpenPlotter/ OpenCPN.
What must I fill in the form of SDR receiver at
- gain
- correction ppm
With the OpenPlotter-tool SDR receiver I tested it in GSM 900 band and got the following results
sample rate: 2047972 current PPM: -13 cumulative PPM: -71
real sample rate: 2048012 current PPM: 6 cumulative PPM: -71
real sample rate: 2047997 current PPM: -1 cumulative PPM: -71
real sample rate: 2047986 current PPM: -7 cumulative PPM: -71
real sample rate: 2047980 current PPM: -9 cumulative PPM: -71
real sample rate: 2047892 current PPM: -52 cumulative PPM: -71
real sample rate: 2048124 current PPM: 61 cumulative PPM: -71
real sample rate: 2047993 current PPM: -3 cumulative PPM: -71
real sample rate: 2047976 current PPM: -11 cumulative PPM: -71
real sample rate: 2048022 current PPM: 11 cumulative PPM: -71
real sample rate: 2047996 current PPM: -2 cumulative PPM: -71
real sample rate: 2047966 current PPM: -16 cumulative PPM: -71
real sample rate: 2047993 current PPM: -3 cumulative PPM: -71
real sample rate: 2048024 current PPM: 12 cumulative PPM: -71
real sample rate: 2047992 current PPM: -4 cumulative PPM: -71
real sample rate: 2047997 current PPM: -1 cumulative PPM: -71
real sample rate: 2047985 current PPM: -7 cumulative PPM: -71
real sample rate: 2048012 current PPM: 6 cumulative PPM: -70
real sample rate: 2047995 current PPM: -2 cumulative PPM: -70
real sample rate: 2047944 current PPM: -27 cumulative PPM: -70
real sample rate: 2047996 current PPM: -2 cumulative PPM: -70
real sample rate: 2048006 current PPM: 3 cumulative PPM: -70
real sample rate: 2047953 current PPM: -23 cumulative PPM: -70
real sample rate: 2048082 current PPM: 40 cumulative PPM: -70
real sample rate: 2047970 current PPM: -14 cumulative PPM: -70
real sample rate: 2048204 current PPM: 100 cumulative PPM: -70
real sample rate: 2047797 current PPM: -99 cumulative PPM: -70
real sample rate: 2048155 current PPM: 76 cumulative PPM: -70
real sample rate: 2047767 current PPM: -113 cumulative PPM: -70
real sample rate: 2048257 current PPM: 126 cumulative PPM: -70
real sample rate: 2047821 current PPM: -87 cumulative PPM: -70
real sample rate: 2047984 current PPM: -7 cumulative PPM: -70
lost at least 44 bytes
real sample rate: 2047658 current PPM: -167 cumulative PPM: -70
real sample rate: 2048085 current PPM: 42 cumulative PPM: -70
lost at least 148 bytes
real sample rate: 2047590 current PPM: -200 cumulative PPM: -70
lost at least 176 bytes
real sample rate: 2047532 current PPM: -228 cumulative PPM: -70
lost at least 80 bytes
lost at least 12 bytes
real sample rate: 2045953 current PPM: -1000 cumulative PPM: -71
real sample rate: 2047998 current PPM: -1 cumulative PPM: -71
lost at least 64 bytes
real sample rate: 2047287 current PPM: -348 cumulative PPM: -71
lost at least 156 bytes
real sample rate: 2046656 current PPM: -656 cumulative PPM: -71
real sample rate: 2048068 current PPM: 34 cumulative PPM: -71
real sample rate: 2047967 current PPM: -16 cumulative PPM: -71
real sample rate: 2048004 current PPM: 2 cumulative PPM: -71
lost at least 228 bytes
real sample rate: 2047516 current PPM: -236 cumulative PPM: -71
real sample rate: 2048279 current PPM: 136 cumulative PPM: -71
real sample rate: 2047788 current PPM: -103 cumulative PPM: -71
real sample rate: 2048024 current PPM: 12 cumulative PPM: -71
real sample rate: 2047998 current PPM: -1 cumulative PPM: -71
real sample rate: 2048000 current PPM: 0 cumulative PPM: -71
real sample rate: 2048047 current PPM: 23 cumulative PPM: -71
real sample rate: 2048014 current PPM: 7 cumulative PPM: -71
lost at least 36 bytes
real sample rate: 2047930 current PPM: -34 cumulative PPM: -71
What must I fill in the form of SDR receiver at
- gain
- correction ppm
Thanks for help.
regards
Karl