[App_rpt-users] Chicken Burst tweak
Lu Vencl
vencl at att.net
Thu Jul 14 02:17:10 UTC 2011
Ah, gotcha.. Great idea! Will try that this weekend..
The only issue is that not all of my repeaters are micors.. So hopefully
the developers will consider this for the wish list for the next release..
Thanks Jeff!
Lu
KA4EPS
-----Original Message-----
From: Jeff DePolo [mailto:jd0 at broadsci.com]
Sent: Wednesday, July 13, 2011 10:03 PM
To: 'Lu Vencl'; app_rpt-users at ohnosec.org
Subject: RE: [App_rpt-users] Chicken Burst tweak
No, you missed my point. You're already using Asterisk to encode PL, and
you already it configured to send chicken burst, correct? And now, you just
want the chicken burst hang time to be longer than what Asterisk is
providing, right? So, use the PL board *without* the PL reed to extend the
chicken burst hang time. In other words, the PL board is just being used to
keep the PTT keyed longer, thus extending the length of the chicken burst
length.
--- Jeff WN3A
> -----Original Message-----
> From: Lu Vencl [mailto:vencl at att.net]
> Sent: Wednesday, July 13, 2011 9:57 PM
> To: 'Jeff DePolo'; app_rpt-users at ohnosec.org
> Subject: RE: [App_rpt-users] Chicken Burst tweak
>
> Well that would not work either.. The reverse burst needs to be only a
> certain duration (about 150 ms), or it will be considered a
> new valid PL
> tone.
>
> See this article for details..
> http://www.repeater-builder.com/rbtip/reverseburst.html
>
>
> -----Original Message-----
> From: app_rpt-users-bounces at ohnosec.org
> [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Jeff DePolo
> Sent: Wednesday, July 13, 2011 9:33 PM
> To: app_rpt-users at ohnosec.org
> Subject: Re: [App_rpt-users] Chicken Burst tweak
>
>
> If you've pulled the PL reed but still have the board
> installed, the board
> itself is giving you about 150 ms of "chicken burst" as it's
> keeping the PTT
> keyed during the reverse burst time. Why not just install a bigger
> capacitor in the RC network on the tone board that determines
> the reverse
> burst period, thus extending your chicken burst?
>
> --- Jeff WN3A
>
> > -----Original Message-----
> > From: app_rpt-users-bounces at ohnosec.org
> > [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Lu Vencl
> > Sent: Wednesday, July 13, 2011 9:15 PM
> > To: 'Ken'; 'Paul J. Agamata'; bdboyle at bdboyle.com;
> > app_rpt-users at ohnosec.org
> > Subject: Re: [App_rpt-users] Chicken Burst tweak
> >
> > So let me lay out a few notes to clarify.
> >
> > In the "notone" mode, the CTCSS encoding is present on all
> > transmissions, including CWID, announcements etc. Then at the
> > end of each transmission, the CTCSS encoding stops at hang
> > timer expiration and then the PTT is released about 300-500
> > ms later. I will need to measure that to confirm the amount.
> > For most radios the current amount of delay is sufficient,
> > but Yaesu wants a tad bit more delay before the mute occurs,
> > thus you still hear the squelch burst.. Obviously this has no
> > bearing on operation as everything works fine, however for
> > the purpose of improving the process / project, I simply
> > wanted to point it out.
> >
> > Sounds like this is nothing a config file can fix at this
> > time, but in a future release, the option to tweak this
> > parameter or perhaps a second predefined value would be a plus.
> >
> >
> >
> > From: Ken [mailto:ke2n at cs.com]
> > Sent: Wednesday, July 13, 2011 6:58 PM
> > To: 'Paul J. Agamata'; 'Lu Vencl'; bdboyle at bdboyle.com;
> > app_rpt-users at ohnosec.org
> > Subject: RE: [App_rpt-users] Chicken Burst tweak
> >
> >
> >
> > Hmmm - maybe I was not clear
> >
> >
> >
> > If you let Asterisk do the CTCSS detection and generation,
> > select "notone" in your config file and set the hang time (in
> > the other config file) to something reasonable, then users -
> > who have turned on their tone squelch - will hear no squelch
> > tail. Isn't that what we are trying to do?
> >
> >
> >
> > Ken
> >
> >
> >
> > From: Paul J. Agamata [mailto:Sysman at Xceptions.COM]
> > Sent: Wednesday, July 13, 2011 6:19 PM
> > To: Ken; 'Lu Vencl'; bdboyle at bdboyle.com; app_rpt-users at ohnosec.org
> > Subject: Re: [App_rpt-users] Chicken Burst tweak
> >
> >
> >
> > The parameter can be tweaked in code but I don't believe you
> > can do it from the configuration files itself (at least I
> > haven't found a way to do it). Another thing that might help
> > the situation is even though your using COS from the USB, you
> > may want to find out what your high water mark from your
> > squelch is when you key up your repeater and set the
> > rxsquelch to just below that. People that use non motorola
> > radios on my repeater have no issues with squelch tail when I
> > set it up that way. I don't know what your using for a
> > repeater but my Quantar's work just fine setting it up that
> > way. I use CTCSS from the Quantar instead of the software
> > CTCSS from the software.
> >
> >
> >
> > Paul
> >
> >
> >
> > From: Ken <ke2n at cs.com>
> > Date: Wed, 13 Jul 2011 11:50:05 -1000
> > To: 'Lu Vencl' <vencl at att.net>, "bdboyle at bdboyle.com"
> > <bdboyle at bdboyle.com>, "app_rpt-users at ohnosec.org"
> > <app_rpt-users at ohnosec.org>
> > Subject: Re: [App_rpt-users] Chicken Burst tweak
> >
> >
> >
> > What you are talking about is in usbradio.conf
> >
> >
> >
> > txtoctype=notone ; Transmit tone control type: no,phase,notone
> >
> > ; no - CTCSS tone encoding with no hang time
> >
> > ; phase - encode CTCSS and reverse phase
> >
> > ; AKA ("reverse burst") before unkeying TX
> >
> > ; notone - encode CTCSS and stop sending
> > tone before unkeying TX
> >
> > ; AKA ("chicken burst")
> >
> >
> >
> > I use the "notone" option as you can see.
> >
> >
> >
> > I find that my Kenwood radio needs about 700 ms of hang time
> > (from rpt.conf) for the CTCSS squelch to close.
> >
> > If you drop the carrier after that, there is no noise. Before
> > that - and you still hear some squelch tail.
> >
> >
> >
> > Ken
> >
> > KE2N
> >
> >
> >
> >
> >
> > From: app_rpt-users-bounces at ohnosec.org
> > [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Lu Vencl
> > Sent: Wednesday, July 13, 2011 11:25 AM
> > To: bdboyle at bdboyle.com; app_rpt-users at ohnosec.org
> > Subject: Re: [App_rpt-users] Chicken Burst tweak
> >
> >
> >
> > Hi Bryan.
> >
> > Thanks for the reply.
> >
> > Yes, I adjusted hangtime and all it does is extend the
> > repeater hang time.
> >
> > As for the reverse burst method, it works great with radios
> > that support is like Motorola portables.
> >
> > The problem is that the VX5-R does not support reverse burst.
> > The repeater is a Motorola repeater, so I pulled the TX PL
> > reed out and got excited about the chicken burst option on
> > the APP_RPT.. But it still gives me squelch burst.. Like I
> > said, I just need another 100 MS (200 to be safe) to make
> this work..
> >
> > Is this a parameter that cannot be tweaked?
> >
> > If not, I can always build an external piece of hardware to
> > add the additional delay on the PTT. I just thought it might
> > be easier to do this in software.
> >
> > Or I can simply wait for a future APP_RPT release that might
> > have this variable defined to help those with radios that
> > need a little bit more time in the CTCSS timeout sequence.
> >
> >
> >
> > 73
> >
> > Lu, KA4EPS
> >
> > From: app_rpt-users-bounces at ohnosec.org
> > [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of
> Bryan D. Boyle
> > Sent: Wednesday, July 13, 2011 8:12 AM
> > To: app_rpt-users at ohnosec.org
> > Subject: Re: [App_rpt-users] Chicken Burst tweak
> >
> >
> >
> > On 7/13/11 7:02 AM, Lu Vencl wrote:
> >
> > Looking for the parameter and file (if not in rpt.conf) where
> > I can tweak the length of chicken burst. The current amount
> > is not enough for my VX 5R.. I need another 200 MS to be
> effective.
> >
> > Thanks..
> >
> > Lu
> >
> > KA4EPS
> >
> > Have you gone through and set your timeouts and such in
> > rpt.conf? Additionally...are you transmitting PL tones? If
> > you are, and you're not depending on the radio hardware (ie
> > you're doing all the audio processing in Asterisk, and doing
> > direct FM injection), you can try using reversing the phase
> > of the pl before carrier drop to quiet the end user receiver
> > before dropping RF carrier. Old technique to quiet the
> > receiver before dropping carrier.
> >
> > Getting all of these to work correctly is a balancing act
> > between what the radio can do, and how that coincides with
> > how Asterisk views the world.
> >
> > Just some thoughts.
> >
> > 73 Bryan WB0YLE
> > Allstar 27294 27295 27673 27710 27774...:)
> >
> > -- Bryan In this world, you must be oh so smart or oh so
> > pleasant. Well, for years I was smart. I recommend pleasant.
> > You may quote me.
> >
> >
>
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