InterceptRadio.com Forums

The radio website that doesn’t abuse the 1st Amendment.
It is currently Wed Aug 15, 2018 12:19 pm

All times are UTC - 8 hours


Forums       Map Search       Database Search       Live Audio       Alerts       Wiki




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Fri Aug 03, 2018 1:00 am 
Offline
User avatar

Joined: Wed Jun 27, 2007 10:55 pm
Posts: 459
Location: Britain
RR is actually useful, heh.

Been running it for over a year....


It takes some setup, but having a phase 2 'scanner' for the cost of an SDR... love it.

There's also people putting it on Raspberry Pi 3.... Making it portable.

Install Ubuntu

Open terminal window
Code:
cd ~
git clone https://github.com/boatbod/op25
cd  op25
./install.sh


Then you'll need to set up text files for your systems.... defining system freq and NAC

Here's SS911 as test...

Code:
"Sysname"   "Control Channel List"   "Offset"   "NAC"   "Modulation"   "TGID Tags File"   "Whitelist"   "Blacklist"   "Center Frequency"
"SS911 Site 1"   "774.68125, 774.43125, 773.93125"   "0"   "0x1E1"   "C4FM"   "ss911t.tsv"   ""   "40108,40119,40113,40204,30204,40209,40210,40217,40246"   
"SS911 Site 2"   "774.48125, 773.98125, 770.60625, 770.35625"   "0"   "0X1E2"   "CQPSK"   "ss911t.tsv"   ""   "40108,40119,40113,40204,30204,40209,40210,40217,40246"   
"SS911 Site 3"   "773.73125"   "0"   "0X1E3"   "CQPSK"   "ss911t.tsv"   ""   "40108,40119,40113,40204,30204,40209,40210,40217,40246"   
"SS911 Site 4"   "774.70625, 773.20625, 774.20625"   "0"   "0X1E4"   "CQPSK"   "ss911t.tsv"   ""   "40108,40119,40113,40204,30204,40209,40210,40217,40246"
"SS911 Site 5"   "773.48125,772.93125"   "0"   "0X1E5"   "CQPSK"   "ss911t.tsv"   ""   


Tab delineated file.

Then run a lengthy command

Code:
cd /op25/op25/gr-op25_repeater/apps/
./rx.py --args -rtl=0 -N LNA:46 -f 772.13125e6 -S 2048000 -V -q 0 -T psrs.tsv -2 -U



and you're set!

There are other options for using a web interface as well...

Attachment:
op25.jpg


You do not have the required permissions to view the files attached to this post.

_________________
Oh! Come and see the violence inherent in the system! Help, help, I'm being repressed!


Top
 Profile  
 
PostPosted: Tue Aug 07, 2018 8:38 am 
Offline

Joined: Mon Jan 03, 2005 1:17 am
Posts: 2245
Location: Bellevue, WA
Could you make a short video of it decoding an IWN VHF site? Whichever site is strongest for you... just curious as to what it looks like. I have an extra laptop laying around so I may give OP25 a shot.


Top
 Profile  
 
PostPosted: Tue Aug 07, 2018 11:32 am 
Offline
User avatar

Joined: Wed Jun 27, 2007 10:55 pm
Posts: 459
Location: Britain
nickcarr wrote:
Could you make a short video of it decoding an IWN VHF site? Whichever site is strongest for you... just curious as to what it looks like. I have an extra laptop laying around so I may give OP25 a shot.


It might be awhile. But sure...

_________________
Oh! Come and see the violence inherent in the system! Help, help, I'm being repressed!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by electricity. Copyright © 2013 Interceptradio.com