[op25-dev] Re: sockaudio.py startup?

'wa8wg' wa8wg@centurytel.net [op25-dev] op25-dev at yahoogroups.com
Wed Jul 5 23:23:55 UTC 2017


Disregard my previous message.    I had to reinitialize the SDR and rx.py now loads with a zero center frequency in trunk.tsv using the lower sample rate as suggested.

 

Bill

 

 

William G. Becks, WA8WG

N7027 Shady Lane Circle

Porterfield, WI 54159

 

Telephone: 715.735.0131

E-Mail:  <mailto:wa8wg at centurytel.net> wa8wg at centurytel.net

 

 

 

From: op25-dev at yahoogroups.com [mailto:op25-dev at yahoogroups.com] 
Sent: Wednesday, July 5, 2017 6:08 PM
To: op25-dev at yahoogroups.com
Subject: RE: [op25-dev] Re: sockaudio.py startup?

 

  

I tried setting the center frequency to zero in my trunk.tsv and turning the sampling rate down but rx.py doesn’t like the zero center frequency.   See below.   Where can I download the patched version that allows a zero center frequency statement?

 

pi at raspberrypi:~/op25/op25/gr-op25_repeater/apps $ ./rx.sh

linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0-unknown

 

setting gain lna to 49

set_center_freq: 0

./rx.sh: line 2: $'\r': command not found

./rx.sh: line 3: $'\r': command not found

./rx.sh: line 4: $'\r': command not found

./rx.sh: line 5: $'\r': command not found

./rx.sh: line 6: $'\r': command not found

./rx.sh: line 7: $'\r': command not found

./rx.sh: line 8: $'\r': command not found

./rx.sh: line 9: $'\r': command not found

./rx.sh: line 10: $'\r': command not found

./rx.sh: line 11: $'\r': command not found

pi at raspberrypi:~/op25/op25/gr-op25_repeater/apps $

 

Thank you,

 

Bill

 

William G. Becks, WA8WG

N7027 Shady Lane Circle

Porterfield, WI 54159

 

E-Mail: wa8wg at centurytel.net

 

 

 

From: op25-dev at yahoogroups.com [mailto:op25-dev at yahoogroups.com] 
Sent: Wednesday, July 5, 2017 4:03 PM
To: op25-dev at yahoogroups.com
Subject: RE: [op25-dev] Re: sockaudio.py startup?

 

  

yes, though it depends on whether a center frequency has been specified.  If so then OP25 remains tuned to the center frequency and if not, it retunes the SDR each time a frequency change is needed.  From what I've seen the slow sample rate (250,000) on the PI causes the changes to be somewhat slow, so I was getting the first word(s) of calls chopped off.  Currently (for the PI) we recommend -S 1000000 and setting the center frequency to zero, or omitting it.  Another user reported getting a crash with this, and a possible workaround for it has just been pushed to the repo....  It should be possible to set the center frequency to zero.  When this is done the trunk-tracking mode should work fine no matter how wide the system is, but it does preclude the use of the log-all-talkgroups-to-disk mode, unfortunately... 

Max



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