[NLRS] Increase noise on 432

[James Anderson]

LoRa is possible but 433MHz would be illegal in the US (ITU region-1). Cheers – JB/k8os

From: nlrs-bounces at mailman.qth.net <nlrs-bounces at mailman.qth.net> On Behalf Of Jon Platt via NLRS
Sent: Wednesday, September 10, 2025 6:04 PM
To: NRLS Reflector <nlrs at mailman.qth.net>
Subject: [NLRS] Increase noise on 432

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 ?

73,Jon
W0ZQ
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