One of many signals near 877 MHz
From Signal Identification Wiki
 | |
|---|---|
| Frequencies | 877.875 MHz |
| Frequency Range | 877.875 MHz - 877.875 MHz |
| Mode | NFM |
| Modulation | 4FSK |
| ACF | — |
| Bandwidth | 2.55 MHz |
| Location | Barnwell County, South Carolina |
| Short Description | Probably 3G or 4G cellular signals |
| I/Q Raw Recording | — |
| Audio Sample | — |
Here is a download link to a 7-zipped IQ file (81 MiB). I asked about this on the GNURadio mailing list and they say it is 2 adjacent signals, either IS-95 or CDMA2000.
