Data not making sense

[Ghulam Umar]

Running with : rtl_433 -d rtl_tcp -f 912600155 -s 2800k -Y autolevel -Y magest -S all

This is the only data i see and it doesnt make any sense how can the pressure and temperatures be that extreme? Also dont have that many TPMS sensors around me.

is it decoding it wrong? Or am i doing something wrong here?

Any help would be appreciated.

Thanks

[Christian Z.]

That looks like bad recption and not like proper data. I wouldn't expect to see fffbbf as id, not random enough.

Try a less specific frequency, i.e. -f 912.6M or -f 916.5M and such. Also use -M level -M noise to keep an eye on signal strength.

[Ghulam Umar]

I am seeing -40db noise.

So I am trying to read a Neptune r900 water meter but most of the time not seeing anything.

Question:
1. What are codes (from below)?

2. What can i do to get signal from my meter?

I tried with -A and got a couple of the following:
[Auto Level] Current noise level -42.0 dB, estimated noise -42.0 dB
Detected FSK package 2024-10-08 10:21:52
Analyzing pulses...
Total count: 934, width: 2.41 ms ( 6755 S)
Pulse width distribution:
[ 0] count: 1, width: 0 us [0;0] ( 0 S)
[ 1] count: 218, width: 0 us [0;0] ( 1 S)
[ 2] count: 133, width: 2 us [2;2] ( 5 S)
[ 3] count: 106, width: 1 us [1;1] ( 4 S)
[ 4] count: 159, width: 1 us [1;1] ( 2 S)
[ 5] count: 57, width: 4 us [3;4] ( 10 S)
[ 6] count: 197, width: 1 us [1;1] ( 3 S)
[ 7] count: 59, width: 2 us [2;3] ( 7 S)
[ 8] count: 4, width: 5 us [5;5] ( 13 S)
Gap width distribution:
[ 0] count: 75, width: 1 us [1;1] ( 2 S)
[ 1] count: 343, width: 0 us [0;0] ( 1 S)
[ 2] count: 125, width: 2 us [2;3] ( 7 S)
[ 3] count: 159, width: 1 us [1;1] ( 3 S)
[ 4] count: 110, width: 1 us [1;1] ( 4 S)
[ 5] count: 57, width: 2 us [2;2] ( 5 S)
[ 6] count: 56, width: 4 us [3;4] ( 10 S)
[ 7] count: 7, width: 5 us [5;6] ( 14 S)
[ 8] count: 1, width: 8 us [8;8] ( 21 S)
Pulse period distribution:
[ 0] count: 130, width: 1 us [1;1] ( 2 S)
[ 1] count: 257, width: 2 us [2;2] ( 5 S)
[ 2] count: 208, width: 4 us [3;4] ( 10 S)
[ 3] count: 108, width: 5 us [4;6] ( 14 S)
[ 4] count: 40, width: 1 us [1;1] ( 3 S)
[ 5] count: 51, width: 1 us [1;1] ( 4 S)
[ 6] count: 130, width: 2 us [2;3] ( 7 S)
[ 7] count: 9, width: 7 us [6;8] ( 19 S)
Pulse timing distribution:
[ 0] count: 1, width: 0 us [0;0] ( 0 S)
[ 1] count: 561, width: 0 us [0;0] ( 1 S)
[ 2] count: 229, width: 2 us [2;2] ( 5 S)
[ 3] count: 217, width: 1 us [1;1] ( 4 S)
[ 4] count: 234, width: 1 us [1;1] ( 2 S)
[ 5] count: 152, width: 3 us [3;4] ( 9 S)
[ 6] count: 356, width: 1 us [1;1] ( 3 S)
[ 7] count: 89, width: 2 us [2;3] ( 7 S)
[ 8] count: 26, width: 4 us [4;6] ( 12 S)
[ 9] count: 3, width: 6 us [6;8] ( 18 S)
Level estimates [high, low]: 1031, 110
RSSI: -24.0 dB SNR: 19.4 dB Noise: -43.5 dB
Frequency offsets [F1, F2]: 742, 1217 (+31.7 kHz, +52.0 kHz)
Guessing modulation: Non Return to Zero coding (Pulse Code)
Attempting demodulation... short_width: 0, long_width: 0, reset_limit: 366, sync_width: 0
Use a flex decoder with -X 'n=name,m=FSK_PCM,s=0,l=0,r=366'
[pulse_slicer_pcm] Analyzer Device: Exact bit width (in us) is 0.36 vs 0.36, 1029 bit measured
[pulse_slicer_pcm] Analyzer Device
codes : {6759}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

[Christian Z.]

A noise floor of -42 dB is dead silence for an RTL-SDR. This should not happen.

For signals with working AGC you want -0 db to maybe -10dB.

The codes are purely noise.