Is OP25 capable of scanning a Motorola Type II SmartZone system that consists of digital and analog? I am trying to set up a RPi4+ to scan my local Sheriff Dept in Jackson County, Mississippi.
Is OP25 capable of scanning a Motorola Type II SmartZone system that consists of digital and analog? I am trying to set up a RPi4+ to scan my local Sheriff Dept in Jackson County, Mississippi.
The main requirement is for two rtl dongles - one tracks the control channel and the other does voice (either digital or analog). Setup is a good bit more complex than P25 because you have to know (and set) the band plan. If you post your cfg.json, a link to the system you're trying to monitor, and copies of your stderr.2 log file running at "-v 11" I may be able to assist further.okay, I have it receiving and decoding on one control channel, but I have no audio other than white noise every now and then, but it is mostly silent.
{
"channels": [
{
"name": "control channel",
"trunking_sysname": "Jackson County",
"device": "rtl0",
"raw_output": "",
"demod_type": "fsk",
"destination": "smartnet",
"excess_bw": 0.35,
"filter_type": "fsk2",
"if_rate": 18000,
"plot": "",
"enable_analog": "off",
"symbol_rate": 3600
},
{
"name": "voice channel",
"trunking_sysname": "Jackson County",
"meta_stream_name": "stream_0",
"device": "rtl1",
"blacklist": "",
"whitelist": "",
"raw_output": "",
"demod_type": "fsk4",
"destination": "udp://127.0.0.1:23456",
"enable_analog": "auto",
"nbfm_deviation": 4000,
"nbfm_squelch_threshold": -60,
"nbfm_squelch_gain": 0.0050,
"nbfm_raw_output": "",
"nbfm_enable_subchannel": false,
"excess_bw": 0.2,
"filter_type": "widepulse",
"if_rate": 24000,
"plot": "",
"symbol_rate": 4800
}
],
"devices": [
{
"args": "rtl=0",
"frequency": 855625000,
"gains": "LNA:39",
"name": "rtl0",
"offset": 0,
"ppm": 0.0,
"rate": 1000000,
"usable_bw_pct": 0.65,
"tunable": true
},
{
"args": "rtl=1",
"frequency": 855625000,
"gains": "LNA:39",
"name": "rtl1",
"offset": 0,
"ppm": 0.0,
"rate": 1000000,
"usable_bw_pct": 0.65,
"tunable": true
}
],
"trunking": {
"module": "tk_smartnet.py",
"chans": [
{
"sysname": "Jackson County",
"control_channel_list": "854.6375,855.3125,855.7625,856.7375",
"tgid_tags_file": "",
"tgid_hold_time": 2.0,
"blacklist": "",
"whitelist": "",
"bandplan": "800_reband"
}
]
},
"metadata": {
"module": "",
"streams": [
{
"stream_name": "stream_0",
"meta_format_idle": "[idle]",
"meta_format_tgid": "[%TGID%]",
"meta_format_tag": "[%TGID%] %TAG%",
"icecastServerAddress": "your_stream_host_and_port",
"icecastMountpoint": "your_mountpoint_name",
"icecastPass": "your_password",
"icecastMountExt": ".xspf",
"delay": 0.0
}
]
},
"audio": {
"module": "sockaudio.py",
"instances": [
{
"instance_name": "audio0",
"device_name": "default",
"udp_port": 23456,
"audio_gain": 1.0,
"number_channels": 1
}
]
},
"terminal": {
"module": "terminal.py",
"terminal_type": "curses",
"#terminal_type": "http:127.0.0.1:8080",
"curses_plot_interval": 0.2,
"http_plot_interval": 1.0,
"http_plot_directory": "../www/images",
"tuning_step_large": 1200,
"tuning_step_small": 100
}
}
You posted the "default" cfg.json that appears as example in the apps folder. Please post the actual json file that you have configuredJackson County ,Ms Trunking system
Jackson County Trunking System, Pascagoula, Mississippi
Jackson County Trunking System Profilewww.radioreference.com
Remove .txt at the end of file names.
Me too, It's heck to get old!Sorry about that, I picked the wrong file. I got old eyes. LOL
My signal quality is probably a large part of the problem as I am using the antennas that came with the dongles and I am about 15 miles from the closest antenna site.
Agreed, but the FSK control channel signal looks pretty well defined. I think it'll work once the ppm is set up properly and the tuning is centered.15 miles is a pretty good haul on 800 MHz. You might have to go with an external antenna system, but at the very least, try repositinging
them to see if you can get any better results.
That is very likely because it's quite far off frequency. Does your Nooelec Mini have TXCO. If not, it may be way off frequency andWhen I swap and put the Nooelec v5 as th voice channel and the old, blue case Nooelec nesdr mini 2 as the control channel, I no longer get the control channel spike. The mini 2 is from 2015 and I don’t know what version it is
In the long run you might want to obtain another Nooelec SMArTee that that has the TCXO clock reference. However, I am confident thatAccording the the Nooelec website, it does not.