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If there is nefarious activity by your neighbors, you should report it to the organization that regulates communications activity or other relevant authorities in your respective country. There is nothing people on an Internet forum can do for you.

Appreciate the suggestions for RTL-SDR - will look into this.

On the topic of everyday items producing ~400 MHz, the dBm levels for our signal (as strong as -50 with LNA off) pretty much rule this out. We can see several other neighbor's WiFi signals in the 2.4GHz range but the dBm levels for these home WiFi signals range from -69 to -80 given the spacing of the homes. So, it doesn't seem plausible that someone's key fob, weather station, etc. is going to produce a signal stronger than their home WiFi - strong enough to read in the 50's inside our home 10-15 ft from the exterior wall.

As I mentioned earlier, there are other things going on that make it quite likely there is some nefarious neighbor activity involved here. I'm not an RF crank - there's a real issue at play here.

RTL-SDR is likely better device for this application. In my area (US) I see quite a bit of activity at 434Mhz. My home weather station outdoor sensor sends a burst out every minute to report the outside temp and humidity. I also find keyfobs and automotive tire pressure sensor activity on this freq.
If you want to see a lot of activity look at the 910 to 930 Mhz region. The ether is alive w signals: almost make me want to wear a Faraday suit.

Erik,
Its the basic....
However good news. It was the USB issue. I placed a USB 2.0 hub in the path to the USB 3.0 on the PC, and it now updates just fine.

Many thanks for the fast response, and kudos for a great gadget. Excellent !!
I was snooping on my 21MHz FT8 transmissions last night with the telescopic antenna. Really nice :-)

Best Regards
Steve

Ultra or basic?
USB 2 port or USB 3?
--

Punkte-

If the upgrade fails and you get a white or black LCD screen.

Where did you purchase the TinySA from?

Just received by TinySA. Working great for the day, no issues. Love it.

I somewhat regretably decided to update the FW using STM Cube Promming tool.

It failed part through. It erased secotrs 1-55. Then reported download in progress. and failed to right to address 0x80000800. Nothing but a white screen.

I Managed to do the VDD/Boot0 short, and reconnected to SW. It seems to be connected, but still white screen.

But the downoald failed again. I also tried an earlier FX version. No success.

?

I have a separate issue regarding FW update.
I just received my wonderful TinySA basic. Working fine, but thought I would update the FW.
Used the STMC Cube Programmer.

But it failed half way with some sector failure.

Now get the white screen. Tried the VDD/Boot0 short, but still white screen. Also disconnected the battery too. No luck.
Obviously I cannot go to the DFU screen.

Any help?

Thanks
Steve

As for being able to see what's out there, the RTL-SDR can't be beat. Just make sure you get one of the real McCoy's, see rtl-sdr -dot-com. Pair this gem with PDW, an open-source offering from discriminator -dot-nl and among other things you'll see lots of POCSAG and FLEX transactions, many of which you might have wished not to see. Yes, those old 900 MHz pagers are very much in use today.

TinySA (Ultra) is so much more than a wonderful tool precursor to assist using the SDR. Cheers, Erik and community. FYI/just a friendly thought.

You have not told us where you are. In the USA that band segment is allocated to land mobile. 454 MHz is a common area for pagers, which are digital these days. 460 MHz will have 2-way land mobile activity. Some of it digital with maybe some analog stragglers. If you are near a city center or a repeater site you could have quite strong signals.

If you really want to nail it down you need a Yagi or a DF loop.

73

-Jim
NU0C

On Sun, 10 Mar 2024 14:10:55 -0700
"bench builder via groups.io" <bench.build.0i@...> wrote:

400 MHz IR-UWB is absolutely being used today due to it's ability to penetrate non-metal structures. There are articles about use for survivor detection. And, here's a nature article about figure detection & passive vital sign monitoring through walls:

We've determined frequencies for everything we have emitting signals. It's nothing of ours. And, the signal is way too strong to be a more pedestrian item in a next door home given distance between houses.

There are reasons I won't detail that suggest nefarious neighbor activity. So, with that context, what are some possibilities?

--

73

-Jim
NU0C

Thanks to Joe for the video link about identifying signals. Searched my zip code for 453-455 MHz or 459-461 MHz licenses and there are none. Found this example of a wireless packet - data transmission network usually used by police, military, etc. that sounds very similar to the audio we've captured:

One RF engineer I spoke to recently suggested this looked like radar/telemetry pings and packet transmission. So, this seems to fit. The 454 seems like it may be the packet transmission and the 460 blips could be the radar/telemetry pings.

Does anyone have direct experience with the appearance of radar/telemetry signals and packet transmission on a spectrum analyzer (TinySA or other)?

It could be worse.

There's the fruitcakes that peddle the electrosensitivity nonsense too.

Give them a tiny sa and they'll be dangerous ?

73 de Andy?

On Sun, Mar 10, 2024 at 09:10 PM, bench builder wrote:

400 MHz IR-UWB is absolutely being used today due to it's ability to penetrate non-metal structures

Agreed, things have moved on since I last looked at this subject, so that's one of several new things I have learned today.

I found this blog article which gives a brief overview of various technologies, but ignore the poor graphics.

https://www.kentfaith.co.uk/blog/article_cameras-that-can-see-through-walls_587

The method I recalled was Passive millimeter wave imaging, and not Ultra-wideband radar imaging, which was the technique you mentioned

Personally, I'm still sceptical that it is what you think it is, but I'm always curious, so be sure to let us all know when you figure out what it actually turns out to be.

Regards,

Martin

400 MHz IR-UWB is absolutely being used today due to it's ability to penetrate non-metal structures. There are articles about use for survivor detection. And, here's a nature article about figure detection & passive vital sign monitoring through walls:

We've determined frequencies for everything we have emitting signals. It's nothing of ours. And, the signal is way too strong to be a more pedestrian item in a next door home given distance between houses.

There are reasons I won't detail that suggest nefarious neighbor activity. So, with that context, what are some possibilities?

Watch this YouTube:



A great resource to watch if you are trying to identify a signal local to your zip code or area.

Joe, K1ike