Unknown Ringing
 | |
|---|---|
| Frequencies | 154.646 MHz |
| Frequency Range | 154.646 MHz - 154.646 MHz |
| Mode | NFM |
| Modulation | — |
| ACF | — |
| Bandwidth | 0 Hz |
| Location | Worldwide |
| Short Description | Repeats every minute. |
| I/Q Raw Recording | — |
| Audio Sample | |
Description[edit]
Repeats every minute.
I've heard this where I live, the frequency here is listed as belonging to an agency using encrypted P25 Phase 1. --Distribute (talk) 03:16, 12 January 2016 (NZDT)
Could we get an 16-bit IQQuadrature signals form the basis of complex RF signal modulation and demodulation, both in hardware and in software, as well as in complex signal analysis. sample of this? The ftt waterfall here is rather low and doesn't show the details of it. --Cartoonman (talk) 05:41, 12 January 2016 (NZDT)
I can detect this signal from Central Florida on 154.46375 MHzMegaHertz (MHz) 10^6 Hz. According to FCC License searches, the frequency is allocated to several power companies across the state. A Google search led me to this document: http://ipu.msu.edu/library/pdfs/publications/Energy%20and%20Communications%20in%20Transition%20(1981).pdf Starting on page 81 of that PDF it talks about using radio communications for electric grid load management, with the quote, "Currently, one frequency, 154.46375 MHzMegaHertz (MHz) 10^6 Hz, is authorized by the FCC exclusively for load management use." It also mentions that it's using FSKFrequency-Shift Keying modulation for encoding the data.
Here's a link to a 50MB zipped raw IQQuadrature signals form the basis of complex RF signal modulation and demodulation, both in hardware and in software, as well as in complex signal analysis.: https://drive.google.com/file/d/0BxsZY02DGumYcDVPdTh0Y1lpZHM/view?usp=sharing
--Drunkatgt (talk) 05:22, 20 February 2016 (NZDT)
I have it in my local area as well. Several in the state of Georgia use the same frequency.
