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Hi,
Just thought I'd let you know that I finally made use of my TinySA Ultra tracking down some interference where I work with some testing equipment.

Using a handheld yagi I made for 70cms I tracked down the inteference to a set of portable traffic lights that were using the same frequency as the test kit @ 458.5MHz.

So the TinySA definitely earned its keep today.

On Thu, Feb 29, 2024 at 07:27 AM, <phil@...> wrote:

Using a handheld yagi I made for 70cms I tracked down the inteference to a set of portable traffic lights that were using the same frequency as the test kit @ 458.5MHz.

Excellent.

We have a lot of those around here, and probably the rest of the UK too.

The 458.525 to 458.925MHz chunk of spectrum (also 869.40 to 869.65 MHz) used by them, seems to have evolved from what was originally intended, and the portable traffic control systems now appear to be the main user, possibly as a result of driving (no pun intended) everyone else out of that part of the band.



Try my web sdr, and choose the "Ant 2 458 to 460MHz PMR" profile, you will hear loads of them.



I'm just waiting (again, no pun intended) for someone to work out the data protocol, to maybe help speed up my commute :-)

Regards,

Martin

Thanks for that Martin, I listened for a while, I've got Webrx up and running on a Pi4 but still only playing with it as I've not got any decent antennas.

Phil

On Fri, Mar 1, 2024 at 07:45 AM, <phil@...> wrote:

I've got Webrx up and running on a Pi4 but still only playing with it as I've not got any decent antennas.

Hi Phil,

OK sounds good, PM me if you wish to discuss in greater detail. It will save cluttering up the forum.

Regards,

Martin