Hi,
it’s possible to avoid the typical squelch noise after the reception of a valid signal from a repeater RX? Is there a specific setting, if yes in what file?
Many thanks for help!
73! Thomas, IW3AMQ
Do you mean the tone or the “tail”?
The tone is a function of the software, although I am not versed enough to tell you how to control that.
If you mean the tail (the carrier that clicks back after an “over”) then thats actually a part of your repeater, and not set in the app_rpt software, as far as I’m aware, as most repeaters I’ve used, connected to the internet or not, have had a tail of varying degrees (imagine a three minute tail - ikes!).
Its probably the best idea if you don’t want any tail - which I’m not even sure if you could properly implement - that you use a tone to acknowledge the repeater has heard you. Otherwise, you’ll never know if you’re getting through. Of course, we use a short tone and tail to tell us we got in, and we can talk through our tail on the LOX board and Simoco repeater, however, another system I used, I wasn’t able to talk through the (thankfully short) tail.
Hope this helps!
···
---------- Forwarded message ----------
From: “Shane Morris” edgecomberts@gmail.com
Date: 18/02/2013 4:14 AM
Subject: Re: [App_rpt-users] Avoid squelch noise after receiving a signal
To: “Thomas Delmonego” iw3amq@dnet.it
On 18/02/2013 3:53 AM, “Thomas Delmonego” iw3amq@dnet.it wrote:
Hi,
it’s possible to avoid the typical squelch noise after the reception of a valid signal from a repeater RX? Is there a specific setting, if yes in what file?
Many thanks for help!
73! Thomas, IW3AMQ
App_rpt-users mailing list
Ciao Thomas
The squelch “tail” is usually eliminated by using CTCSS (so called PL) on the transmitted signal and corresponding PL detection on receive. I am not sure how common that is in EU though …
On the repeater you need (usbradio.conf)
txtoctype=notone
With this, Asterisk stops transmitting the CTCSS tone about 600 milliseconds before dropping the carrier – radios that are using tone squelch will not hear any noise at all when the other station stops transmitting.
Some receivers need > 600 milliseconds for the tone squelch action. It is possible to make this time delay longer, if needed.
73
Ken
···
From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] On Behalf Of Thomas Delmonego
Sent: Sunday, February 17, 2013 11:53 AM
To: app_rpt-users@ohnosec.org
Subject: [App_rpt-users] Avoid squelch noise after receiving a signal
Hi,
it’s possible to avoid the typical squelch noise after the reception of a valid signal from a repeater RX? Is there a specific setting, if yes in what file?
Many thanks for help!
73! Thomas, IW3AMQ
So, you’re saying the tail is still there, but you don’t hear it because Asterisk stops transmitting the CTCSS tone just before the tail starts, meaning the receiving radios actually “don’t” hear it?
Interesting way of looking at the issue, thats for sure…!
···
On 18/02/2013 4:26 AM, “Ken” ke2n@cs.com wrote:
Ciao Thomas
The squelch “tail” is usually eliminated by using CTCSS (so called PL) on the transmitted signal and corresponding PL detection on receive. I am not sure how common that is in EU though …
On the repeater you need (usbradio.conf)
txtoctype=notone
With this, Asterisk stops transmitting the CTCSS tone about 600 milliseconds before dropping the carrier – radios that are using tone squelch will not hear any noise at all when the other station stops transmitting.
Some receivers need > 600 milliseconds for the tone squelch action. It is possible to make this time delay longer, if needed.
73
Ken
From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] On Behalf Of Thomas Delmonego
Sent: Sunday, February 17, 2013 11:53 AM
To: app_rpt-users@ohnosec.org
Subject: [App_rpt-users] Avoid squelch noise after receiving a signal
Hi,
it’s possible to avoid the typical squelch noise after the reception of a valid signal from a repeater RX? Is there a specific setting, if yes in what file?Many thanks for help!
73! Thomas, IW3AMQ
App_rpt-users mailing list
Now i’ve find in the web the right order for the “usbradio.conf” file:
[usb]
…
rxsquelchdelay=150 ;delaytime in ms carrier squelch tail eliminator
And i must set also this parameter:
rxondelay=4 ;avoid squelch tail or disable RX audio in the beginning of an RX signalIt’s a pity, that’s no complete handbook can find …
73! Thomas, IW3AMQ
···
From: iw3amq@dnet.it
To: app_rpt-users@ohnosec.org
Date: Sun, 17 Feb 2013 17:52:53 +0100
Subject: [App_rpt-users] Avoid squelch noise after receiving a signal�
Hi,
it’s possible to avoid the typical squelch noise after the reception of a valid signal from a repeater RX? Is there a specific setting, if yes in what file?
Many thanks for help!
73! Thomas, IW3AMQ
App_rpt-users mailing list
App_rpt-users@ohnosec.org
http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
Ciao Ken,
many thanks for your reply! Your solution inhibit only the noise for an RTX, not the noise for the RX of a repeater. I find a solution … see my own mail.
73! Thomas, IW3AMQ
···
From: ke2n@cs.com
To: iw3amq@dnet.it; app_rpt-users@ohnosec.org
Subject: RE: [App_rpt-users] Avoid squelch noise after receiving a signal�
Date: Sun, 17 Feb 2013 12:25:57 -0500
Ciao Thomas
The squelch �tail� is usually eliminated by using CTCSS (so called PL) on the transmitted signal and corresponding PL detection on receive. I am not sure how common that is in EU though �
On the repeater you need (usbradio.conf)
txtoctype=notone
With this, Asterisk stops transmitting the CTCSS tone about 600 milliseconds before dropping the carrier � radios that are using tone squelch will not hear any noise at all when the other station stops transmitting.
Some receivers need > 600 milliseconds for the tone squelch action. It is possible to make this time delay longer, if needed.
73
Ken
From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] On Behalf Of Thomas Delmonego
Sent: Sunday, February 17, 2013 11:53 AM
To: app_rpt-users@ohnosec.org
Subject: [App_rpt-users] Avoid squelch noise after receiving a signal�
Hi,
it’s possible to avoid the typical squelch noise after the reception of a valid signal from a repeater RX? Is there a specific setting, if yes in what file?
Many thanks for help!
73! Thomas, IW3AMQ
It can be made to cover up any tail that the repeater is repeating, but the real reason for it is to help you eliminate the tail that your own radio is generating when the repeater carrier drops.
73
Ken
···
From: Shane Morris [mailto:edgecomberts@gmail.com]
Sent: Sunday, February 17, 2013 12:29 PM
To: Ken
Cc: Thomas Delmonego; app_rpt mailing list
Subject: Re: [App_rpt-users] Avoid squelch noise after receiving a signal
So, you’re saying the tail is still there, but you don’t hear it because Asterisk stops transmitting the CTCSS tone just before the tail starts, meaning the receiving radios actually “don’t” hear it?
Interesting way of looking at the issue, thats for sure…!
On 18/02/2013 4:26 AM, “Ken” ke2n@cs.com wrote:
Ciao Thomas
The squelch “tail” is usually eliminated by using CTCSS (so called PL) on the transmitted signal and corresponding PL detection on receive. I am not sure how common that is in EU though …
On the repeater you need (usbradio.conf)
txtoctype=notone
With this, Asterisk stops transmitting the CTCSS tone about 600 milliseconds before dropping the carrier – radios that are using tone squelch will not hear any noise at all when the other station stops transmitting.
Some receivers need > 600 milliseconds for the tone squelch action. It is possible to make this time delay longer, if needed.
73
Ken
From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] On Behalf Of Thomas Delmonego
Sent: Sunday, February 17, 2013 11:53 AM
To: app_rpt-users@ohnosec.org
Subject: [App_rpt-users] Avoid squelch noise after receiving a signal
Hi,
it’s possible to avoid the typical squelch noise after the reception of a valid signal from a repeater RX? Is there a specific setting, if yes in what file?
Many thanks for help!
73! Thomas, IW3AMQ
App_rpt-users mailing list
App_rpt-users@ohnosec.org
http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users