[op25-dev] P25 decoding using RTL_SDR

This is merely a historical archive of years 2008-2021, before the migration to mailman3.

A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/op25-dev@lists.osmocom.org/.

Matt Ames matt.ames7bc@gmail.com [op25-dev] op25-dev at yahoogroups.com
Fri Aug 24 01:28:40 UTC 2018


Hi Sean,

The install.sh script has been so reliable and easy that there has been no
need for a live CD. Give the instructions here (
http://osmocom.org/projects/op25/wiki/InstallInstructionsPage) a go.

Cheers,
Matt


On Fri, 24 Aug 2018 at 11:17, Sean Kealy superstardodge at yahoo.com
[op25-dev] <op25-dev at yahoogroups.com> wrote:

>
>
> Been away from this project for awhile, Where can I get a copy of the live
> cd?
>
> --------------------------------------------
> On Sun, 7/15/18, gnorbury at bondcar.com [op25-dev] <op25-dev at yahoogroups.com>
> wrote:
>
> Subject: [op25-dev] Re: P25 decoding using RTL_SDR
> To: op25-dev at yahoogroups.com
> Received: Sunday, July 15, 2018, 7:05 PM
>
>
>
>
>
>
>
>
>
>
>
>
> Without further information (i.e. stderr.2
> logs) it's hard to say for sure what the problem is.
> Most likely although your fft plot "looks" good
> you may not be accurately tuned.  Typically you'll need
> to adjust ppm (-q parameter) to bring the tuning into
> alignment enough that the p25_demod locks on.  When that
> happens you should see the TSBK counter start to
> increment.
> If
> you're using the "boatbod" fork you can use
> the mixer plot (key #5) to dial in the ppm and fine tuning
> more accurately than is possible with the fft plot alone.
> Furthermore, you can also use a nac value of 0 if you
> don't know or cannot verify the nac of the system you
> are trying to tune.
>
>
>
>
>
>
>
>
>
>
> #yiv5719345116 #yiv5719345116 --
> #yiv5719345116ygrp-mkp {
> border:1px solid #d8d8d8;font-family:Arial;margin:10px
> 0;padding:0 10px;}
>
> #yiv5719345116 #yiv5719345116ygrp-mkp hr {
> border:1px solid #d8d8d8;}
>
> #yiv5719345116 #yiv5719345116ygrp-mkp #yiv5719345116hd {
> color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px
> 0;}
>
> #yiv5719345116 #yiv5719345116ygrp-mkp #yiv5719345116ads {
> margin-bottom:10px;}
>
> #yiv5719345116 #yiv5719345116ygrp-mkp .yiv5719345116ad {
> padding:0 0;}
>
> #yiv5719345116 #yiv5719345116ygrp-mkp .yiv5719345116ad p {
> margin:0;}
>
> #yiv5719345116 #yiv5719345116ygrp-mkp .yiv5719345116ad a {
> color:#0000ff;text-decoration:none;}
> #yiv5719345116 #yiv5719345116ygrp-sponsor
> #yiv5719345116ygrp-lc {
> font-family:Arial;}
>
> #yiv5719345116 #yiv5719345116ygrp-sponsor
> #yiv5719345116ygrp-lc #yiv5719345116hd {
> margin:10px
> 0px;font-weight:700;font-size:78%;line-height:122%;}
>
> #yiv5719345116 #yiv5719345116ygrp-sponsor
> #yiv5719345116ygrp-lc .yiv5719345116ad {
> margin-bottom:10px;padding:0 0;}
>
> #yiv5719345116 #yiv5719345116actions {
> font-family:Verdana;font-size:11px;padding:10px 0;}
>
> #yiv5719345116 #yiv5719345116activity {
>
> background-color:#e0ecee;float:left;font-family:Verdana;font-size:10px;padding:10px;}
>
> #yiv5719345116 #yiv5719345116activity span {
> font-weight:700;}
>
> #yiv5719345116 #yiv5719345116activity span:first-child {
> text-transform:uppercase;}
>
> #yiv5719345116 #yiv5719345116activity span a {
> color:#5085b6;text-decoration:none;}
>
> #yiv5719345116 #yiv5719345116activity span span {
> color:#ff7900;}
>
> #yiv5719345116 #yiv5719345116activity span
> .yiv5719345116underline {
> text-decoration:underline;}
>
> #yiv5719345116 .yiv5719345116attach {
> clear:both;display:table;font-family:Arial;font-size:12px;padding:10px
> 0;width:400px;}
>
> #yiv5719345116 .yiv5719345116attach div a {
> text-decoration:none;}
>
> #yiv5719345116 .yiv5719345116attach img {
> border:none;padding-right:5px;}
>
> #yiv5719345116 .yiv5719345116attach label {
> display:block;margin-bottom:5px;}
>
> #yiv5719345116 .yiv5719345116attach label a {
> text-decoration:none;}
>
> #yiv5719345116 blockquote {
> margin:0 0 0 4px;}
>
> #yiv5719345116 .yiv5719345116bold {
> font-family:Arial;font-size:13px;font-weight:700;}
>
> #yiv5719345116 .yiv5719345116bold a {
> text-decoration:none;}
>
> #yiv5719345116 dd.yiv5719345116last p a {
> font-family:Verdana;font-weight:700;}
>
> #yiv5719345116 dd.yiv5719345116last p span {
> margin-right:10px;font-family:Verdana;font-weight:700;}
>
> #yiv5719345116 dd.yiv5719345116last p
> span.yiv5719345116yshortcuts {
> margin-right:0;}
>
> #yiv5719345116 div.yiv5719345116attach-table div div a {
> text-decoration:none;}
>
> #yiv5719345116 div.yiv5719345116attach-table {
> width:400px;}
>
> #yiv5719345116 div.yiv5719345116file-title a, #yiv5719345116
> div.yiv5719345116file-title a:active, #yiv5719345116
> div.yiv5719345116file-title a:hover, #yiv5719345116
> div.yiv5719345116file-title a:visited {
> text-decoration:none;}
>
> #yiv5719345116 div.yiv5719345116photo-title a,
> #yiv5719345116 div.yiv5719345116photo-title a:active,
> #yiv5719345116 div.yiv5719345116photo-title a:hover,
> #yiv5719345116 div.yiv5719345116photo-title a:visited {
> text-decoration:none;}
>
> #yiv5719345116 div#yiv5719345116ygrp-mlmsg
> #yiv5719345116ygrp-msg p a span.yiv5719345116yshortcuts {
> font-family:Verdana;font-size:10px;font-weight:normal;}
>
> #yiv5719345116 .yiv5719345116green {
> color:#628c2a;}
>
> #yiv5719345116 .yiv5719345116MsoNormal {
> margin:0 0 0 0;}
>
> #yiv5719345116 o {
> font-size:0;}
>
> #yiv5719345116 #yiv5719345116photos div {
> float:left;width:72px;}
>
> #yiv5719345116 #yiv5719345116photos div div {
> border:1px solid
> #666666;min-height:62px;overflow:hidden;width:62px;}
>
> #yiv5719345116 #yiv5719345116photos div label {
>
> color:#666666;font-size:10px;overflow:hidden;text-align:center;white-space:nowrap;width:64px;}
>
> #yiv5719345116 #yiv5719345116reco-category {
> font-size:77%;}
>
> #yiv5719345116 #yiv5719345116reco-desc {
> font-size:77%;}
>
> #yiv5719345116 .yiv5719345116replbq {
> margin:4px;}
>
> #yiv5719345116 #yiv5719345116ygrp-actbar div a:first-child {
> margin-right:2px;padding-right:5px;}
>
> #yiv5719345116 #yiv5719345116ygrp-mlmsg {
> font-size:13px;font-family:Arial, helvetica, clean,
> sans-serif;}
>
> #yiv5719345116 #yiv5719345116ygrp-mlmsg table {
> font-size:inherit;font:100%;}
>
> #yiv5719345116 #yiv5719345116ygrp-mlmsg select,
> #yiv5719345116 input, #yiv5719345116 textarea {
> font:99% Arial, Helvetica, clean, sans-serif;}
>
> #yiv5719345116 #yiv5719345116ygrp-mlmsg pre, #yiv5719345116
> code {
> font:115% monospace;}
>
> #yiv5719345116 #yiv5719345116ygrp-mlmsg * {
> line-height:1.22em;}
>
> #yiv5719345116 #yiv5719345116ygrp-mlmsg #yiv5719345116logo {
> padding-bottom:10px;}
>
>
> #yiv5719345116 #yiv5719345116ygrp-msg p a {
> font-family:Verdana;}
>
> #yiv5719345116 #yiv5719345116ygrp-msg
> p#yiv5719345116attach-count span {
> color:#1E66AE;font-weight:700;}
>
> #yiv5719345116 #yiv5719345116ygrp-reco
> #yiv5719345116reco-head {
> color:#ff7900;font-weight:700;}
>
> #yiv5719345116 #yiv5719345116ygrp-reco {
> margin-bottom:20px;padding:0px;}
>
> #yiv5719345116 #yiv5719345116ygrp-sponsor #yiv5719345116ov
> li a {
> font-size:130%;text-decoration:none;}
>
> #yiv5719345116 #yiv5719345116ygrp-sponsor #yiv5719345116ov
> li {
> font-size:77%;list-style-type:square;padding:6px 0;}
>
> #yiv5719345116 #yiv5719345116ygrp-sponsor #yiv5719345116ov
> ul {
> margin:0;padding:0 0 0 8px;}
>
> #yiv5719345116 #yiv5719345116ygrp-text {
> font-family:Georgia;}
>
> #yiv5719345116 #yiv5719345116ygrp-text p {
> margin:0 0 1em 0;}
>
> #yiv5719345116 #yiv5719345116ygrp-text tt {
> font-size:120%;}
>
> #yiv5719345116 #yiv5719345116ygrp-vital ul li:last-child {
> border-right:none !important;
> }
> #yiv5719345116
>
> 
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osmocom.org/pipermail/op25-dev/attachments/20180824/9dd2a2ee/attachment.htm>


More information about the op25-dev mailing list