Setup Information
Use sudo asl-show-version to obtain this information from the console or SSH
OS : Debian GNU/Linux 12 (bookworm)
OS Kernel : 6.12.62+rpt-rpi-v8
Asterisk : 22.7.0+asl3-3.7.1-1.deb12
ASL [app_rpt] : 3.7.1
Inquiry
Repeater to Allstar is crackling and low. Allstar to Repeater basey and distorted.
Here's a complete summary to post on the AllStarLink community forum:
Hardware:
-
Raspberry Pi 3, aarch64
-
DMK URI (C-Media, USB path 1-1.1.3:1.0, idProduct 000c)
-
Motorola Quantar repeater, connected via wireline port
-
Node 626793
Software:
-
ASL3 upgraded from 3.6.3 to 3.7.1 on January 30, 2026
-
Asterisk 22.7.0+asl3-3.7.1-1.deb12
What changed in chan_simpleusb between 3.6.3 and 3.7.1 regarding audio scaling, and what settings are recommended for DMK URI with Quantar wireline port after the 3.7.1 update?
Thank you
*Simpleusb.conf*
;!
;! Automatically generated configuration file
;! Filename: simpleusb.conf (/etc/asterisk/custom/simpleusb/626793.conf)
;! Generator: chan_simpleusb
;! Creation Date: Thu Jan 29 20:54:19 2026
;!
[general]
[626793]
devstr = 1-1.1.3:1.0
no_eeprom = 1
eeprom = 0
legacyaudioscaling = yes
; RX settings
rxmixerset = 500
rxboost = no
carrierfrom = usbinvert ; This prevented stuck PTT
rxaudiodelay = 0 ; Add a small delay to help with audio sync
; TX settings
txmixaset = 500 ; Middle ground between 2000 and 10000
txmixbset = 500
txboost = no
duplex = 1
preemphasis = yes ; This worked better
deemphasis = no ; This worked better
ctcssfrom = no
plfilter = no
root@k2erc:/home/k2erc#
amixer values:
root@k2erc:/home/k2erc# amixer -c 1 contents
numid=5,iface=MIXER,name='Headphone Playback Switch'
; type=BOOLEAN,access=rw------,values=1
: values=on
numid=6,iface=MIXER,name='Headphone Playback Volume'
; type=INTEGER,access=rw---R--,values=2,min=0,max=151,step=0
: values=151,151
| dBminmaxmute-min=-28.37dB,max=-0.06dB
numid=3,iface=MIXER,name='Mic Playback Switch'
; type=BOOLEAN,access=rw------,values=1
: values=off
numid=4,iface=MIXER,name='Mic Playback Volume'
; type=INTEGER,access=rw---R--,values=1,min=0,max=32,step=0
: values=0
| dBminmaxmute-min=0.00dB,max=47.81dB
numid=7,iface=MIXER,name='Mic Capture Switch'
; type=BOOLEAN,access=rw------,values=1
: values=on
numid=8,iface=MIXER,name='Mic Capture Volume'
; type=INTEGER,access=rw---R--,values=1,min=0,max=16,step=0
: values=8
| dBminmax-min=0.00dB,max=23.81dB
numid=9,iface=MIXER,name='Auto Gain Control'
; type=BOOLEAN,access=rw------,values=1
: values=off
numid=2,iface=PCM,name='Capture Channel Map'
; type=INTEGER,access=r--v-R--,values=1,min=0,max=36,step=0
: values=2
| container
| chmap-fixed=MONO
numid=1,iface=PCM,name='Playback Channel Map'
; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0
: values=3,4
| container
| chmap-fixed=FL,FR