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Any hints for using the Tinysa to find signals from household security cameras, outdoor wireless weather sensors, and driveway alarms?

Just got Tinysa from Aliexpress, version 39 (not even listed in the past updates!). Works fine, still learning.

I have tried to see the signals from outdoor wireless camera and my driveway alarm, but can't readily see them. Maybe I need to know the frequency first and then set the Tinsa to a narrow band? But it seems a spectrum analyzer should find them.

Thanks
Mike
K4QET

Depending where in the world you are, these devices may operate on different frequencies.
Weather sensors, security cameras and alarms may operate around 434MHz or 868MHz

The wiki contains some info on capturing these signals:?

Thank you, the first sentence in the wiki alone is important...transmissions are very short!

My HP spectrum Analyzer does not search for a signal like a scanner does.? For finding an unknown frequency of interest, I take the device close to the SA input antenna which will make it the largest amplitude signal on the trace.? I also do a Google search to divine the probably frequency and set my start-stop range just outside that (i.e. probable frequency is 450Mhz - start 440Mhz - stop 470Mhz) and narrow it down from there.

Pat

On Tue, Sep 29, 2020 at 04:53 AM, mrutkaus wrote:

I have tried to see the signals from outdoor wireless camera and my driveway alarm, but can't readily see them. Maybe I need to know the frequency first and then set the Tinsa to a narrow band?

There should be a device FCC ID that can be traced on the to determine what the operating frequency of the device is.? I know the outdoor wireless cameras that I have all operate in the 2.4GHz or 5.8GHz range.? Eachine makes cost effective multichannel receivers that can detect the video cameras.

My guess using the tinySA for those frequencies, you'll need to downconvert to the tinySA frequency range using a downconverter or mixer design.

Outdoor wireless weather sensors/stations I believe from reading into the Universal Radio Hacker protocols, are typically within the tinySA range and I have no idea regarding driveway alarms since I'm not sure if those are Infrared, microwave, capacitance or some other maybe low end VLF or lower range.??

Here is a neat video that somewhat goes into detail using for finding interference:

On Tue, Sep 29, 2020 at 05:01 AM, Erik Kaashoek wrote:

The wiki contains some info on capturing these signals:?

Awesome!? Didn't realize the functionality was present.? This will be interesting to see how with the software can be used to decode the signals... maybe saving time using info from like the Universal Radio Hacker or other compilations data.?

I did it! According to the wiki provided above.

Went to the driveway alarm, watched the screen and waved my hand in front of it, blooey! Giant signal wide pulse (of some sort). Somewhere slightlyabove the 433mhz center i had put in. Pretty neat.

Then, went to the outside temp/humidity sensor and waited, no way to make it do anything. Out of nowhere a big but much narrower rf pulse in the sam area slightly above 433. It puts out one pulse every 30 seconds or so.

Next step is to follow the additional instructions in the wiki and look into the pulse. And make it pause automatically.

Thanks all.