Transmissions not read after hop

[Jocala]

rtl_433 version 23.11, linux mint, RTL-SDR Blog V4.

command: /usr/local/bin/rtl_433 -H 120 -f 433M -f 915M -C customary

I'm attempting to read a LaCrosse-TX141THBv2 temp sensor at 433M and a LaCrosse LTV-Pool-INT (TFA-Marbella) pool thermometer at 915M. I can read either separately, but when I attempt to hop between the two frequencies I get multiple:

bitbuffer_add_bit: Warning: row count limit (50 rows) reached.

Reception seems to cease after this.

[zuckschwerdt]

That's not an error but just a waring that noise looks like data and then exceeds the reasonable amount of data to read.
Perhaps levels are not ideal. Add -Y autolevel -Y magest -M level -M noise and check what noise and level readings you get.

[Jocala]

I'm obviously a noob, thanks for looking at this.

rtl_433 -Y autolevel -Y magest -M level -M noise -H 120 -f 433M -f 915M -C customary

With this command-line I get:

[Auto Level] Current noise level -2.5 dB, estimated noise -2.7 dB
[repeats]
[Auto Level] Estimated noise level is -27.5 dB, adjusting minimum detection level to -24.5 dB
[Auto Level] Current noise level -27.9 dB, estimated noise -27.9 dB
[repeats]

First transmission received:

time : 2024-05-10 11:56:06
model : TFA-Marbella
id : 690574
counter : 7
Temperature: 84.6 F
Integrity : CRC
Modulation: FSK
Freq1 : 915.0 MHz
Freq2 : 915.0 MHz
RSSI : -12.9 dB
SNR : 15.9 dB
Noise : -28.8 dB

bitbuffer_add_bit: Warning: row count limit (50 rows) reached
[repeats]

I never see a transmission from the LaCrosse-TX141THBv2.

[zuckschwerdt]

A noise level below -20 dB is good, that noise level close to 0 dB is a jammed band or recpetion problems.
What change do you see when hopping occurs? Use -v to get hopping notifications.

[Jocala]

[SDR] Tuned to 433.000MHz.
[Auto Level] Current signal level -2.1 dB, estimated noise -21.9 dB
[Auto Level] Current noise level -2.1 dB, estimated noise -2.4 dB

bitbuffer_add_bit: Warning: row count limit (50 rows) reached

SDR] Tuned to 915.000MHz.
bitbuffer_add_bit: Warning: row count limit (50 rows) reached
[Auto Level] Estimated noise level is -16.6 dB, adjusting minimum detection level to -13.6 dB
[Auto Level] Estimated noise level is -18.0 dB, adjusting minimum detection level to -15.0 dB

No transmissions from 433Mhz noted when both -f 915 and -f 433 are used.

[ProfBoc75]

@Jocala : can you try 433.92M instead of 433M