Getting my WS defined as both Fineoffset-WH65B and WH24

[Pierre Broberg]

Hi!

Is anyone else getting the same station identified as two kind of models?
I've read they are pretty similar with changes in the windspeed and rainfall data.
Can I some how force the data coming in to be identified as one or the other?

Also the weather station sends every 16sek, but I usually get data every 60-120sec, that might be due to conflicting identification of the station (poor signal?).

The station is a Nordic Pro (looks identically to the Ambient WS2902A, the base has wifi and the layout is the same)

[Pierre Broberg]

Oh, the frequency is 868mhz, using a small dipole 433mhz antenna (because that is what I had at home).

[Philip Knowles]

If you limit the protocols in your config it may help. For my Bresser it is 119.

protocol 119 in the conf file

or

-R 119 in command line

It may be worth experimenting with a few different protocols 124 may work for instance

 

Regards

 

PhilK

 

Sent from Mail for Windows 10

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[Christian Z.]

Likely bad reception. We only have a weak heuristic to distinguish those two and that needs good signal quality. https://github.com/merbanan/rtl_433/blob/master/src/devices/fineoffset.c#L224

Track the quality with -M level

[Pierre Broberg]

Did the -M level to get some signal information, but I don't really know what values are "good", what indicates interference? The rssi? (rssi is usually -0.1)
Also saw that the frequenzy was 868.1-868.3Mhz

Changed it it to 868.2Mhz and now 95% of read data is identified as a WH24 and I get more consistent time between readings. Still not perfect, but it's better!

Could it be so simple that when defined as 868 it "reads" a broader spectrum than when set to 868.2?

[Christian Z.]

RSSI near 0 means the automatic gain is optimal. The SNR (distance between Signal and Noise) is interesting, a clear spectrum should allow for 20 dB or more., below 12 dB it's getting too noisy.

There may be another signal that you picked up at 868M but tuned out at 868.2M -- it's best to inspect the spectrum with CubicSDR, Gqrx or SDRangel. But trying a few values until it works might be fine already.