[NLRS] Increase noise on 432

[Chris Elmquist]

On Wednesday (09/10/2025 at 11:03PM +0000), Jon Platt via NLRS wrote:
> Over the last few weeks I've noticed an increase in pulsed noise on the low end of 432.  Tuning up to 433.900 MHz shows the usual crude there but I've linked my 432.100 pulses to really strong & wide pulse around 433.900 that are hundreds of KHz wide.  Maybe LoRa stations?  I hear two closely spaced fast duration strong pulses every 30 seconds that are very wide, hundreds of KHz, like maybe a chirp .... LoRa?   I thought maybe its the 1300 MHz radar that can be heard on 1296, but its not that.  Seem to be unduly and nasty very wide signals.  
> Any one else hearing this, especially as it appears as a pulsed noise source with short duration on 432.1 ?

I will do some listening here but the first thing that comes to mind is
someone nearby spinning up a new wireless thermometer or weather station.
These are supposed to be on 433.920 but use SAW resonators to do that,
and can be extremely broad and off frequency, and include lots of spurs.

They are usually pretty low power so the guess would be that it is close
to you.  You might use your yagi's directionality to try to pinpoint a
particular direction it comes from.  If you can't isolate a particular
direction, then it's pretty close in-- maybe something new you acquired
or a very nearby neighbor did?

73, Chris NØJCF
-- 
Chris Elmquist