Squelch Burst

AllStarLink
1

Spifically, when I use COR from the radio, I have a squelch crash when a user unkeys. If I use squelch=dsp, then the crash is not there. But, the squelch action of the node receiver is not the best. I would really like to use COR but dislike the squelch burst. Is there a way to delay the audio and shut it off before the squelch closes? Like in a audio delay board for a repeater controller?

Thanks for info that you could pass along.

73
Jim W7RY

2

you may try this for your squelch setting…

Bring up your CLI> Screen.

If you have more that one URI or RIM, you must first select a USB device.

‘example’ CLI>radio active usb20123

Set your radio’s squelch wide open for the next commands

radio tune rxsquelch

'you’ll get the Current Signal Strength is <some number like 695>

now set the squelch setting between 100 to 150 points higher than the Current Signal Strength 795 to 845

radio tune rxsquelch 795

set you radio squelch on and check your results. next you save it

radio tune save

I’m sure there is more suggestions out there including the rxsquelchdelay=80 ; delay in ms carrier squelch tail eliminator in the usbradio.conf

I’ve gotten it to work with carrierfrom=dsp and ctcssfrom=dsp but it seems others report it only to work with the rxdemod= set to flat.

It may have to update ACID. More on that can be found in the archives.

···

From: Jim W7RY w7ry@centurytel.net
To: app_rpt-users@ohnosec.org
Sent: Sunday, October 6, 2013 10:48 PM
Subject: [App_rpt-users] Squelch Burst

Spifically, when I use COR from the radio, I have a squelch crash when a user unkeys. If I use squelch=dsp, then the crash is not there. But, the squelch action of the node receiver is not the best. I would really like to use COR but dislike the squelch burst. Is there a way to delay the audio and shut it off before the squelch closes? Like in a audio delay board for a repeater controller?

Thanks for info that you could pass along.

73
Jim W7RY

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3

Jim,

chan_usbradio does have the ability stop squelch crashes when using
hardwared COS/CTCSS signaling by applying an audio delay and chopping off
a selected number of ms of trailing audio after COS/CTCSS drops.

Try these changes in usbradio.conf:

[usb]

carrierfrom=usb ; could be usbinvert
ctcssfrom=no
rxdemod=flat ; input type from radio -- *must* be set to *flat*
rxsquelchdelay=150 ; Number of milliseconds to "chop"

Have fun -- I hope this helps!

73, David KB4FXC

···

On Sun, 6 Oct 2013, Jim W7RY wrote:

Spifically, when I use COR from the radio, I have a squelch crash when a
user unkeys. If I use squelch=dsp, then the crash is not there. But, the
squelch action of the node receiver is not the best. I would really like
to use COR but dislike the squelch burst. Is there a way to delay the
audio and shut it off before the squelch closes? Like in a audio delay
board for a repeater controller?

Thanks for info that you could pass along.

73
Jim W7RY

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