Unknown-1536125

From Signal Identification Wiki
Jump to: navigation, search
Unknown-1536125
153 612 500-WF.png
Frequencies 153.6125 MHzMegaHertz (MHz) 10^6 Hz153,612,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
153,612.5 kHzKiloHertz (kHz) 10^3 Hz
,151.7815 MHzMegaHertz (MHz) 10^6 Hz151,781,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
151,781.5 kHzKiloHertz (kHz) 10^3 Hz
,469.7605 MHzMegaHertz (MHz) 10^6 Hz469,760,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
469,760.5 kHzKiloHertz (kHz) 10^3 Hz
Frequency Range 151781500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).151,781.5 kHzKiloHertz (kHz) 10^3 Hz
151.782 MHzMegaHertz (MHz) 10^6 Hz
469760500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).469,760.5 kHzKiloHertz (kHz) 10^3 Hz
469.761 MHzMegaHertz (MHz) 10^6 Hz
Mode NFMNarrowband Frequency Modulation
Modulation
Bandwidth 10 kHzKiloHertz (kHz) 10^3 Hz10,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.01 MHzMegaHertz (MHz) 10^6 Hz
10 kHzKiloHertz (kHz) 10^3 Hz
0.01 MHzMegaHertz (MHz) 10^6 Hz
10 kHzKiloHertz (kHz) 10^3 Hz
0.01 MHzMegaHertz (MHz) 10^6 Hz
Location USA
Short Description This signal continuously broadcasts in short blips.
I/Q Raw Recording
Audio Sample

Description[edit]

This signal continuously broadcasts in short blips. Broadcast periodically switches between the two VHFVery High Frequency (30-300 MHz) frequencies. The UHFUltra High Frequency (300-3000 MHz) broadcast is sent with a much shorter delay between pulses and also more irregularly.

"Unknown-1536125", heard all the time on 462.407 MHzMegaHertz (MHz) 10^6 Hz and 173.226 MHzMegaHertz (MHz) 10^6 Hz, Massachusetts, USA area. December 2014. --Cartoonman (talk) 09:24, 30 December 2015 (NZDT)


Avsa242 posted: OP here. I don't know why I hadn't thought of this before, but I did a little Googling and found that the two VHFVery High Frequency (30-300 MHz) freq's are registered to an address of a town water supply. Street view shows two water tanks/towers at that address, so I'm guessing this is some sort of monitoring system. Saw your video- the waterfall looks similar, at least, to the one I posted, but it didn't sound to me like the same signal. --Cartoonman (talk) 09:24, 30 December 2015 (NZDT)

Possible similar or same signal: https://www.youtube.com/watch?v=RZLMKXvVqcQ by LargeVirus. --Cartoonman (talk) 09:25, 30 December 2015 (NZDT)

Audio Sample[edit]

Frequencies[edit]

151.7815 MHzMegaHertz (MHz) 10^6 Hz, 153.6125 MHzMegaHertz (MHz) 10^6 Hz, 469.7605 MHzMegaHertz (MHz) 10^6 Hz