Well i finally got scope working, turns out the problem was when i plugged in my rtl it installed the dvb driver, so I had to use the sudo rmod probe command and remove the kernel I have scope up and running , I want to listen to 139.5600,(mhz) its p25 1 non-trunked, but I cant seem to find it with scope, and my fft plot is in khzAny sugestions on what to use for a ./scope command? Im using ./scope rtl=0 -f 139.5600M
Did anybody get the grc file I posted to work?
./scope.py --args 'rtl=0' -N 'LNA:50' -S 960000 -f 139.5600M -o 20000 -q -1.9 -v 0 -V
Change -q -1.9 to what your RTL PPM value is.
Forget about OP25 and GRC, it doesn't support it.
________________________________ From: op25-dev@yahoogroups.com op25-dev@yahoogroups.com on behalf of Sean Kealy superstardodge@yahoo.com [op25-dev] op25-dev@yahoogroups.com Sent: Friday, June 24, 2016 11:26 PM To: yahoogroups Subject: [op25-dev] scope
Well i finally got scope working, turns out the problem was when i plugged in my rtl it installed the dvb driver, so I had to use the sudo rmod probe command and remove the kernel
I have scope up and running , I want to listen to 139.5600,(mhz) its p25 1 non-trunked, but I cant seem to find it with scope, and my fft plot is in khz Any sugestions on what to use for a ./scope command? Im using ./scope rtl=0 -f 139.5600M
Did anybody get the grc file I posted to work?
Ok thanks, how do I find out my devices ppm? So if the RTL doesnt support the op25 grc file, what do you recomend? funcube maybe or a usrp Thanks alot for your input been working on this for a long time and am thrilled that I actually have got it installed and up and running!
On Friday, June 24, 2016 10:23 PM, "Very Metal verymetl@hotmail.com [op25-dev]" op25-dev@yahoogroups.com wrote:
./scope.py --args 'rtl=0' -N 'LNA:50' -S 960000 -f 139.5600M -o 20000 -q -1.9 -v 0 -V Change -q -1.9 to what your RTL PPM value is. Forget about OP25 and GRC, it doesn't support it.
From: op25-dev@yahoogroups.com op25-dev@yahoogroups.com on behalf of Sean Kealy superstardodge@yahoo.com [op25-dev] op25-dev@yahoogroups.com Sent: Friday, June 24, 2016 11:26 PM To: yahoogroups Subject: [op25-dev] scope Well i finally got scope working, turns out the problem was when i plugged in my rtl it installed the dvb driver, so I had to use the sudo rmod probe command and remove the kernel I have scope up and running , I want to listen to 139.5600,(mhz) its p25 1 non-trunked, but I cant seem to find it with scope, and my fft plot is in khzAny sugestions on what to use for a ./scope command? Im using ./scope rtl=0 -f 139.5600M
Did anybody get the grc file I posted to work? #yiv9614822150 #yiv9614822150 -- #yiv9614822150ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv9614822150 #yiv9614822150ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv9614822150 #yiv9614822150ygrp-mkp #yiv9614822150hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv9614822150 #yiv9614822150ygrp-mkp #yiv9614822150ads {margin-bottom:10px;}#yiv9614822150 #yiv9614822150ygrp-mkp .yiv9614822150ad {padding:0 0;}#yiv9614822150 #yiv9614822150ygrp-mkp .yiv9614822150ad p {margin:0;}#yiv9614822150 #yiv9614822150ygrp-mkp .yiv9614822150ad a {color:#0000ff;text-decoration:none;}#yiv9614822150 #yiv9614822150ygrp-sponsor #yiv9614822150ygrp-lc {font-family:Arial;}#yiv9614822150 #yiv9614822150ygrp-sponsor #yiv9614822150ygrp-lc #yiv9614822150hd {margin:10px 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv9614822150 #yiv9614822150ygrp-sponsor #yiv9614822150ygrp-lc .yiv9614822150ad 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I think its .5 for the nooelec mini 2 blue rtl, going to try that
On Saturday, June 25, 2016 12:13 PM, "Sean Kealy superstardodge@yahoo.com [op25-dev]" op25-dev@yahoogroups.com wrote:
Ok thanks, how do I find out my devices ppm? So if the RTL doesnt support the op25 grc file, what do you recomend? funcube maybe or a usrp Thanks alot for your input been working on this for a long time and am thrilled that I actually have got it installed and up and running!
On Friday, June 24, 2016 10:23 PM, "Very Metal verymetl@hotmail.com [op25-dev]" op25-dev@yahoogroups.com wrote:
./scope.py --args 'rtl=0' -N 'LNA:50' -S 960000 -f 139.5600M -o 20000 -q -1.9 -v 0 -V Change -q -1.9 to what your RTL PPM value is. Forget about OP25 and GRC, it doesn't support it.
From: op25-dev@yahoogroups.com op25-dev@yahoogroups.com on behalf of Sean Kealy superstardodge@yahoo.com [op25-dev] op25-dev@yahoogroups.com Sent: Friday, June 24, 2016 11:26 PM To: yahoogroups Subject: [op25-dev] scope Well i finally got scope working, turns out the problem was when i plugged in my rtl it installed the dvb driver, so I had to use the sudo rmod probe command and remove the kernel I have scope up and running , I want to listen to 139.5600,(mhz) its p25 1 non-trunked, but I cant seem to find it with scope, and my fft plot is in khzAny sugestions on what to use for a ./scope command? Im using ./scope rtl=0 -f 139.5600M
Did anybody get the grc file I posted to work?
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That dongle has a TCXO which is specified to hold the receiver from varying more than 0.5 PPM. However, the device itself may still have a permanent offset. I have seen this offset as large as 30+ PPM on some dongles.
To determine the permanent offset for an individual device you need to compare it, using a 0.0 PPM offset, to a known stable frequency source. The ideal tool is a service monitor but for most monitoring purposes receiving a continuous transmitter over the air generally works well enough. NOAA weather radio or continuous duty trunking control channels are good candidates.
I haven't played with scope.py for a while, but if I remember right you can adjust the offset on the fly down in the lower left corner. Observe the signal of the transmitter in the spectrum display and adjust the offset until the frequency scale reads properly.
Brett
On Sat, Jun 25, 2016 at 2:45 PM, Sean Kealy superstardodge@yahoo.com [op25-dev] op25-dev@yahoogroups.com wrote:
I think its .5 for the nooelec mini 2 blue rtl, going to try that
On Saturday, June 25, 2016 12:13 PM, "Sean Kealy superstardodge@yahoo.com [op25-dev]" op25-dev@yahoogroups.com wrote:
Ok thanks, how do I find out my devices ppm?
Ok , thanks brett looks like im around 20 using that method
On Saturday, June 25, 2016 12:45 PM, "Sean Kealy superstardodge@yahoo.com [op25-dev]" op25-dev@yahoogroups.com wrote:
I think its .5 for the nooelec mini 2 blue rtl, going to try that
On Saturday, June 25, 2016 12:13 PM, "Sean Kealy superstardodge@yahoo.com [op25-dev]" op25-dev@yahoogroups.com wrote:
Ok thanks, how do I find out my devices ppm? So if the RTL doesnt support the op25 grc file, what do you recomend? funcube maybe or a usrp Thanks alot for your input been working on this for a long time and am thrilled that I actually have got it installed and up and running!
On Friday, June 24, 2016 10:23 PM, "Very Metal verymetl@hotmail.com [op25-dev]" op25-dev@yahoogroups.com wrote:
./scope.py --args 'rtl=0' -N 'LNA:50' -S 960000 -f 139.5600M -o 20000 -q -1.9 -v 0 -V Change -q -1.9 to what your RTL PPM value is. Forget about OP25 and GRC, it doesn't support it.
From: op25-dev@yahoogroups.com op25-dev@yahoogroups.com on behalf of Sean Kealy superstardodge@yahoo.com [op25-dev] op25-dev@yahoogroups.com Sent: Friday, June 24, 2016 11:26 PM To: yahoogroups Subject: [op25-dev] scope Well i finally got scope working, turns out the problem was when i plugged in my rtl it installed the dvb driver, so I had to use the sudo rmod probe command and remove the kernel I have scope up and running , I want to listen to 139.5600,(mhz) its p25 1 non-trunked, but I cant seem to find it with scope, and my fft plot is in khzAny sugestions on what to use for a ./scope command? Im using ./scope rtl=0 -f 139.5600M
Did anybody get the grc file I posted to work?
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Ok I manged to get scope working but have a weak signal, getting a garbled conversation,I used ./scope.py --args 'rtl=0' -N 'LNA;50' -S 960000 -139.4200M -o 2000 -q -2.0 -v 0 -V to run scope, but I have to have my fine tune maxed at -3000 to get anything and get the correct pattern on constellation,What should I change in my command line(.scope.py) to improve the tuning? any ideas
On Saturday, June 25, 2016 2:24 PM, "Sean Kealy superstardodge@yahoo.com [op25-dev]" op25-dev@yahoogroups.com wrote:
Ok , thanks brett looks like im around 20 using that method
On Saturday, June 25, 2016 12:45 PM, "Sean Kealy superstardodge@yahoo.com [op25-dev]" op25-dev@yahoogroups.com wrote:
I think its .5 for the nooelec mini 2 blue rtl, going to try that
On Saturday, June 25, 2016 12:13 PM, "Sean Kealy superstardodge@yahoo.com [op25-dev]" op25-dev@yahoogroups.com wrote:
Ok thanks, how do I find out my devices ppm? So if the RTL doesnt support the op25 grc file, what do you recomend? funcube maybe or a usrp Thanks alot for your input been working on this for a long time and am thrilled that I actually have got it installed and up and running!
On Friday, June 24, 2016 10:23 PM, "Very Metal verymetl@hotmail.com [op25-dev]" op25-dev@yahoogroups.com wrote:
./scope.py --args 'rtl=0' -N 'LNA:50' -S 960000 -f 139.5600M -o 20000 -q -1.9 -v 0 -V Change -q -1.9 to what your RTL PPM value is. Forget about OP25 and GRC, it doesn't support it.
From: op25-dev@yahoogroups.com op25-dev@yahoogroups.com on behalf of Sean Kealy superstardodge@yahoo.com [op25-dev] op25-dev@yahoogroups.com Sent: Friday, June 24, 2016 11:26 PM To: yahoogroups Subject: [op25-dev] scope Well i finally got scope working, turns out the problem was when i plugged in my rtl it installed the dvb driver, so I had to use the sudo rmod probe command and remove the kernel I have scope up and running , I want to listen to 139.5600,(mhz) its p25 1 non-trunked, but I cant seem to find it with scope, and my fft plot is in khzAny sugestions on what to use for a ./scope command? Im using ./scope rtl=0 -f 139.5600M
Did anybody get the grc file I posted to work?
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Brett Friermood brett.friermood＠gmail.com [op25-dev] -
Sean Kealy superstardodge＠yahoo.com [op25-dev]
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Very Metal verymetl＠hotmail.com [op25-dev]