Sample IQ file and Waterfall Display #271
Replies: 5 comments 2 replies
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I have a test fixture for decoding IQ files, send it along. Can you also
tell me the sample rate and bit depth?
…On Sat, Feb 4, 2023 at 10:17 AM DrAnonymous ***@***.***> wrote:
I have an SDRplay RSP1a and have tried multiple times to decode meter
data. I have gas, water, and electrical meters that should all be
transmitting. The FCC ids are: EWQ100WD / EWQ100GDLAS / R7PEG1R1S6.
Can I send someone an IQ file to see if they find anything? Here's a
waterfall plot of one of the ISM frequencies and I think the short
horizontal lines are different meters transmitting. Are those meters like I
thought?
[image: ISMband2]
<https://user-images.githubusercontent.com/10542209/216780600-4a682ba8-8d42-4be7-a79d-111749bcf12b.jpg>
I am running on windows 11, using sdrplay-rtltcp.
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SDRuno_20230205_021452Z_913600kHz.zip I believe its 12bit at 2Ms/s. |
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There don't appear to be any rtlamr-compatible messages in that sample. It's possible the recording wasn't long enough to capture anything, but the messages present look FSK modulated. |
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I grabbed a larger sample, but its too large to post here. I sent an email with a link to drive. Sampled around 917Mhz for about 10 seconds. |
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Would someone mind posting a short IQ file with an IDM message in it? I hope to learn what it should look like in a waterfall display as well as work on understanding decoding in general. |
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I have an SDRplay RSP1a and have tried multiple times to decode meter data. I have gas, water, and electrical meters that should all be transmitting. The FCC ids are: EWQ100WD / EWQ100GDLAS / R7PEG1R1S6.
Can I send someone an IQ file to see if they find anything? Here's a waterfall plot of one of the ISM frequencies and I think the short horizontal lines are different meters transmitting. Are those meters like I thought?
I am running on windows 11, using sdrplay-rtltcp.
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