Can OP25 receive P25 Nationwide Interoperability Channels?

[marklt1]

I am trying to receive 700Mhz Nationwide Interoperability Channels on my Raspberry Pi3B with OP25.
Since these channels, such as 7CALL50 are P25 simplex RX channels with NAC 0xF7E, is that possible to do with the existing hardware and software that I have?
I don't want a heavyweight or resource intensive solution, so the Pi3B has been my hardware of choice. If not OP25, is there some other lightweight solution for the Pi3B or Windows that people are using.
Thanks in advance.

 

[ecps92]

The correct NAC is 0x293

My understanding is the F7E is/was a Motorola way of saying RX CSQ in P25
I've never seen it work on a Scanner, or SDR

I am trying to receive 700Mhz Nationwide Interoperability Channels on my Raspberry Pi3B with OP25.
Since these channels, such as 7CALL50 are P25 simplex RX channels with NAC 0xF7E, is that possible to do with the existing hardware and software that I have?
I don't want a heavyweight or resource intensive solution, so the Pi3B has been my hardware of choice. If not OP25, is there some other lightweight solution for the Pi3B or Windows that people are using.
Thanks in advance.

 

[wgbecks]

Yes. You can monitor P25 conventional channels in op25 using multi_rx.py that also supports DMR, and YSF in addition to P25. You'll need to edit (configure) cfg.json or what ever you want to name it. There are a couple of other steps to get this setup depending upon what your desired destination is for the audio content.

There was a thread here on this subject recently that should provide a good example to follow.

Bill

 

[GTR8000]

@ecps92 is correct on both counts. F7E is a special NAC used in commercial radios to mimic "CSQ" for P25 transmissions, unmuting for anything, and the default NAC for all of the 700 MHz nationwide interop channels is 293.

 

[wgbecks]

I forgot to mention, as far as I know, multi_rx.py will decode any p25 transmission regardless of NAC or TGID. This is good in the sense that it makes it easy to monitor a frequency but it does sometimes cause issues when distant signals appear due to enhanced propagation.

Bill

 

[boatbod]

For P25 Conventional you actually have a choice between using multi_rx.py and rx.py. The advantage of multi_rx.py is that you can potentially monitor multiple channels at once, whereas rx.py will be a single channel but has considerably easier config.

 

[marklt1]

THANKS ALL FOR YOUR ANSWERS.
That's exactly what I needed to know. OP25 with multi_rx.py works perfect for my needs.