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by drmpeg 1931 days ago
What the 902 to 928 MHz spectrum looks like. All those blips in the waterfall are smart meters or some other IoT device.

http://www.w6rz.net/33cm.png
1 comments
imglorp 1931 days ago
Is everybody narrowband in this spectrum? Why would they do that instead of spread/hopping or some such? What's going to happen to all these narrow guys when the band starts getting busy?
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drmpeg 1931 days ago
It's a mix of wideband and narrowband, but everything is frequency hopped.

In the waterfall, the strong wideband bursts have a red colored center frequency. The narrowband bursts are just vertical lines.

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