Talk:Unknown 455

This signal is found in traverse city Michigan on 450.0125 MHzMegaHertz (MHz) 10^6 Hz. This is used probably for small networks of some sort, since it is using slots and FSKFrequency-Shift Keying. Ywsia1

Is it possible to get an 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 it? --Cartoonman (talk) 09:20, 10 September 2016 (NZST)

Unfortunately, I live far south of that city. Do not have the time to travel up there. And my SDR is broken.

Edit: there is a similar signal on this page that says its a unknown trunked. 450.885 Mhz. And he said it was from califiornia. Ywsia1

WAIT!!! I think this a form of ASCII!!!! as the guy who created ASCII on the identified section said there was a transmitter on 450.0125 MHzMegaHertz (MHz) 10^6 Hz. He just identified it... And I think it also might be in the same coordinates as traverse city too..ASCII in this context sounds similar to this and the 450.995...

---

I can do some analysis when i get back, but i'll probably forget. Compare the ascii waveform with the fm-demodulated one from this one, and i believe there are ascii decoders for fsk out there in abundance.

Just from listening to the two waveforms, i do hear a good similarity. --Cartoonman (talk) 16:33, 19 January 2017 (NZDT)

---

I tried to decode with ASCII decoder but no luck. I did see some bit patterns though in the fsk, but not sure how to decode. --Cartoonman (talk) 15:24, 27 January 2017 (NZDT)

---

heres what I was able to decode: with 7E2 framing, 1175 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). center, 300 hz shift @1200 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.:

x|px|xx@x@xxxxxxxxxxxxxxxxx@x@xxx@xxp|xxx|xxxpx@x||xxx@xxxxxxxxxx@xx|xxxxxxxx@xxxx|xx|<xxx|xxx@x|xxxxx|xx|xx||xxxxxxxx@xpx|px|xpxxxxxxx@xxxxxx.

Ywsia1