Just a quick question here. So you have duplex =1 in rpt.conf and in usbradio duplex=0 right? You need to make sure the duplex setting in both the rpt and usberadio.conf files are set to a half duplex mode. How fast is the green light blinking on the URI? What hardware is the node on? Jon On 9/27/2014 4:30 AM, mike@midnighteng.com wrote:
Mike,
May I ask the specific radio involved here ?
...mike/kb8jnm
-------- Original Message -------- Subject: Re: [App_rpt-users] Fwd: COR signal getting confused From: Doug Crompton <doug@crompton.com <mailto:doug@crompton.com>> Date: Sat, September 27, 2014 1:44 am To: "app_rpt-users@ohnosec.org <mailto:app_rpt-users@ohnosec.org>" <app_rpt-users@ohnosec.org <mailto:app_rpt-users@ohnosec.org>>
rxdelay delays qualifying the COS signal until the number of milliseconds after PTT release. This would be true for the courtesy tone also because any TX could cause a false COS trigger if you had that problem.
Maybe you just need to disable the courtesy tone.
*73 Doug WA3DSP http://www.crompton.com/hamradio*
------------------------------------------------------------------------ From: doug@crompton.com <mailto:doug@crompton.com> To: app_rpt-users@ohnosec.org <mailto:app_rpt-users@ohnosec.org> Date: Sat, 27 Sep 2014 00:49:15 -0400 Subject: Re: [App_rpt-users] Fwd: COR signal getting confused
That command does work in simpleusb also but I think it is the opposite that is the problem. It is not responding. Worth a try I suppose.
*73 Doug WA3DSP http://www.crompton.com/hamradio*
------------------------------------------------------------------------ Date: Sat, 27 Sep 2014 00:32:19 -0400 From: kp4tr.ramon@gmail.com <mailto:kp4tr.ramon@gmail.com> To: doug@crompton.com <mailto:doug@crompton.com>; kf7mbk@w7ara.net <mailto:kf7mbk@w7ara.net> CC: app_rpt-users@ohnosec.org <mailto:app_rpt-users@ohnosec.org> Subject: Re: [App_rpt-users] Fwd: COR signal getting confused
Try this in usbradio.conf (this is not recognized in simpleusb):
rxondelay=25 ; This will instruct the usbradio driver to ignore the COR line ; for a specified number of 20mSec intervals following the release of PTT.
On 9/26/2014 11:37 PM, Doug Crompton wrote:
Mike,
You can try the changing the courtesy time wait then set back to duplex=1
The wait-times section This section allows the wait times for voice responses and other audio telemetry events to be adjusted. All wait times are in milliseconds.
*/telemwait/* sets the time before sending the general audio telemetry responses used in the application which are not specifically defined below */idwait/* sets the time to wait before sending ID audio telemetry */unkeywait/* sets the amount of time to wait before sending the courtesy tone. This can be used to ensure breaking stations can get their turn */calltermwait/* sets the amount of time between an autopatch disconnect and the audio telemetry message indicating the call has been terminated
The unkeywait is the one to mess with. It is 400ms on the BBB by default. Make it longer like 1000 so it spans the dropout period you are seeing. Experiment with times.
If that doesn't work I really think you should try a different radio. My thoughts are that it is some kind of recovery issue with TX.
*73 Doug WA3DSP http://www.crompton.com/hamradio*
------------------------------------------------------------------------ From: kf7mbk@w7ara.net <mailto:kf7mbk@w7ara.net> Date: Fri, 26 Sep 2014 18:59:26 -0700 Subject: Re: [App_rpt-users] Fwd: COR signal getting confused To: doug@crompton.com <mailto:doug@crompton.com> CC: app_rpt-users@ohnosec.org <mailto:app_rpt-users@ohnosec.org>
OK, so I did some more testing.
I have routed the signal out of the radio to an NPN and switched from usbinvert to usb as suggested. This made little difference, but in this configuration I could make the RC work a little better bridging the dropouts. But still would end up not detecting carrier after a quick dropout even though the COR signal into the dongle was high.
Duplex = 0 seems to eliminate the problem. Is there a setting to tell it how long to wait after COR dropped to start transmitting the courtesy tone? (though I suppose that would defeat the purpose of the duplex=1 setting) Note that I have the PTT disconnected for testing, so all I see is the red LED come on as soon as the COR out of the radio drops.
Actually as I'm typing this and playing with it, I just noticed it appears if the COR is restored ANY time the PTT is active for the courtesy tone, it will ignore the COR line until it's dropped and brought back up AFTER the PTT is done. This behavior seems VERY repeatable, even with a cleanly restored COR signal, So it may have nothing to do with quick dropouts and everything to do with the courtesy tone..
Are there any settings that control this?
The LED on the radio (and hence my COR input) is controlled by noise squelch opening.
On Fri, Sep 26, 2014 at 3:05 PM, Doug Crompton <doug@crompton.com <mailto:doug@crompton.com>> wrote:
Mike,
Are you using PL or noise squelch or both? Like I said I have not seen this problem and I am using basically stock timing. Every time the PL or squelch goes untrue for a certain (short) duration you should hear a courtesy tone. Perhpas you should try duplex=0 just to see if there is an issue with TX recovery. Do you have another radio you can try?
*73 Doug WA3DSP http://www.crompton.com/hamradio*
------------------------------------------------------------------------ From: kf7mbk@w7ara.net <mailto:kf7mbk@w7ara.net> Date: Fri, 26 Sep 2014 10:18:19 -0700
Subject: Re: [App_rpt-users] Fwd: COR signal getting confused To: doug@crompton.com <mailto:doug@crompton.com> CC: app_rpt-users@ohnosec.org <mailto:app_rpt-users@ohnosec.org>
The scope image in the OP shows there doesn't appear to be a problem with pulling hi or low, The transitions (without the RC) are very clean and go all the way to ground.. It seems like the URI is doing edge detection instead of level detection, and it's just missing fast edges. Wasn't sure if this was something that could be tweaked in software or if I'll have to put some external debounce logic on the line.
On Fri, Sep 26, 2014 at 10:07 AM, Doug Crompton <doug@crompton.com <mailto:doug@crompton.com>> wrote:
Mike,
Before you change any timing make sure as Jon pointed out that your COS signal is going hard high and low on signal and non-signal. You might need a pullup. The URI is kind of weak in that regard. It should be TTL levels <.5 volt low and >2.5 volt high and preferably rail to rail.
*73 Doug WA3DSP http://www.crompton.com/hamradio*
------------------------------------------------------------------------ From: kf7mbk@w7ara.net <mailto:kf7mbk@w7ara.net> Date: Fri, 26 Sep 2014 09:56:21 -0700 Subject: Re: [App_rpt-users] Fwd: COR signal getting confused To: doug@crompton.com <mailto:doug@crompton.com> CC: app_rpt-users@ohnosec.org <mailto:app_rpt-users@ohnosec.org>
Doug,
First: thanks for the excellent writeup on getting allstar running on the BBB. I used it to get up and running very quickly and is the setup I am having this issue with.
I am running duplex =1 as well. I have not changed any timing values, (I'm essentially running the as-installed setup from the install image on your site) but I will take a look at them and see if I can make some changes for the better.
Thanks! -Mike
On Fri, Sep 26, 2014 at 9:49 AM, Doug Crompton <doug@crompton.com <mailto:doug@crompton.com>> wrote:
------------------------------------------------------------------------ From: doug@crompton.com <mailto:doug@crompton.com> To: kf7mbk@w7ara.net <mailto:kf7mbk@w7ara.net> Subject: RE: [App_rpt-users] Fwd: COR signal getting confused Date: Fri, 26 Sep 2014 12:46:14 -0400
That is very strange. Have you changed any of the default timing values? Are you using simplex/duplex? Courtesy tone? Timing values could effect that.
I use simplex with courtesy tone (duplex=1 in rpt.conf) on several nodes and I have never seen that problem. I have one user who has a signal like you describe. He walks in a park with a handheld and he is often in and out.
Also I assume you are not using any rxdelay?
*73 Doug WA3DSP http://www.crompton.com/hamradio*
------------------------------------------------------------------------ From: kf7mbk@w7ara.net <mailto:kf7mbk@w7ara.net> Date: Fri, 26 Sep 2014 08:50:51 -0700 To: app_rpt-users@ohnosec.org <mailto:app_rpt-users@ohnosec.org> Subject: [App_rpt-users] Fwd: COR signal getting confused
Resending since my initial post has been pending moderation for 2 days now and got no reply from the list owner email.
I have modified an HT to bring out the receive LED signal and use it as the COR input to a DMK URI. It is a digital signal as viewed on a scope (i.e. very short slope in the transitions) This seems like it would work well and it does on strong signals. But on marginal signals where the LED may blink on and off quickly (like during picket fencing), it seems to confuse the URI (or the software) were it will start off good, but then a quick dropout of the COR signal will cause the software to no longer detect carrier, even though the signal on the COR input has been restored. Even if the input is solid high (or low in my case, I'm using usbinvert) it will not detect a carrier until there is another dropout of adequate time to "reset" it.
I've tried putting a simple RC on the input but it didn't really help much. Seems the URI (or software) needs a significant minimum time between transitions to properly detect them, long enough that it would delay the carrier detection too much without a circuit more complex than an RC (i.e. something that would allow instant keyup, but delay the key down.)
Linked is a scope image.
https://lh5.googleusercontent.com/-CsJ9autUTAE/VCWK-uNJJpI/AAAAAAAAPSM/VsVvb...
Carrier was detected until this signal dropout event. Ch A is my RC filtered signal sent to the URI, Ch B is the signal out of the radio. Carrier was not detected after the 5th dropout even though the signal remained low.
Anyone ever experience this and/or have ideas on how to fix it?
Thanks.
Mike KF7MBK
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