Hi Bill and Max --

I'm a little confused where the frequency is set. Are you putting the
control channel frequency on the command line with "-f", and then 0 in
trunk.tsv, or the other way around?

I'm still struggling to get things running here.

Thanks,
John
----

On 07/05/2017 07:35 PM, 'wa8wg' wa8wg@centurytel.net [op25-dev] wrote:
> Max,
>
> I now have excellent audio using netcat & aplay with the zero center
> frequency in trunk.tsv and the sampling rate –S 1000000 in the rx.py
> command line. Still no sign though of sockaudio ever starting up.
>
> Thank you!
>
> Bill
>
> William G. Becks, WA8WG
>
> N7027 Shady Lane Circle
>
> Porterfield, WI 54159
>
> Telephone: 715.735.0131
>
> E-Mail: wa8wg@centurytel.net <mailto:wa8wg@centurytel.net>
>
> *From:*op25-dev@yahoogroups.com [mailto:op25-dev@yahoogroups.com]
> *Sent:* Wednesday, July 5, 2017 6:24 PM
> *To:* op25-dev@yahoogroups.com
> *Subject:* RE: [op25-dev] Re: sockaudio.py startup?
>
> 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 <mailto:wa8wg@centurytel.net>
>
> *From:*op25-dev@yahoogroups.com <mailto:op25-dev@yahoogroups.com>
> [mailto:op25-dev@yahoogroups.com]
> *Sent:* Wednesday, July 5, 2017 6:08 PM
> *To:* op25-dev@yahoogroups.com <mailto: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
>
> William G. Becks, WA8WG
>
> N7027 Shady Lane Circle
>
> Porterfield, WI 54159
>
> E-Mail: wa8wg@centurytel.net <mailto:wa8wg@centurytel.net>
>
> *From:*op25-dev@yahoogroups.com <mailto:op25-dev@yahoogroups.com>
> [mailto:op25-dev@yahoogroups.com]
> *Sent:* Wednesday, July 5, 2017 4:03 PM
> *To:* op25-dev@yahoogroups.com <mailto: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
>
>

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