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: wa8wg@centurytel.net
From: op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com]
Sent: Wednesday, July 5, 2017 6:08 PM
To: op25-dev@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@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@raspberrypi:~/op25/op25/gr-op25_repeater/apps $
Thank you,
Bill
From: op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com]
Sent: Wednesday, July 5, 2017 4:03 PM
To: op25-dev@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
Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (9) |