# Usbradio ctcss from dsp allways keyed **URL:** \ **Category:** AllStarLink\ **Created:** [October 21, 2026, 2:32am UTC](https://community.allstarlink.org/t/usbradio-ctcss-from-dsp-allways-keyed/25108 "2026-10-21T02:32:56Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![n5faz1](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/n/ec9cab/32.png) [@n5faz1](https://community.allstarlink.org/u/n5faz1)\ **Post date:** [October 21, 2026, 2:32am UTC](https://community.allstarlink.org/t/usbradio-ctcss-from-dsp-allways-keyed/25108/1 "2026-10-21T02:32:56Z")
hello all, added a new radio to my ASL3 node but the usbradio dsp ctcss decode is stuck in keyed whether there is a signal or not. carrier is also set to dsp and the squelch works fine. audio through it sounds good. but it is in effect stuck in carrier squelch with no PL decode. tried several different tones. but result is the same. other radios on the same node work fine. any ideas and help would be appreciated. thanks, paul from radio tune menu: Receiver/Transmitter Status Display: COS | CTCSS | COS | PTT Input | Input | Out | Out Clear | Keyed | Clear | Clear INFO: RX CTCSS ADJUST START. target=2400 tolerance=100 tries=0, setting=1.000000, meas=0 tries=1, setting=8.000000, meas=0 tries=2, setting=8.000000, meas=0 tries=3, setting=8.000000, meas=0 DONE tries=12, setting=8.000000, meas=0.00 ERROR: RX CTCSS GAIN ADJUST FAILED. INFO: RX RSSI=992 usbradio config: ;! ;! Automatically generated configuration file ;! Filename: usbradio.conf (/etc/asterisk/usbradio.conf) ;! Generator: chan\_usbradio ;! Creation Date: Sun Oct 18 18:07:02 2026 ;! [general] node-main eeprom = 0 ; EEPROM installed: 0,1 hdwtype = 0 ; Leave this set to 0 for USB sound fobs modified using rxboost = yes ; no - 20db attenuator inserted rxctcssrelax = 1 ; reduce talkoff from radios w/o CTCSS TX HPF rxsqhyst = 3000 ; Setting Squelch Hysteresis ;txctcssdefault = 100.0 ; default TX CTCSS frequency, any frequency permitted ;rxctcssfreqs = 100.0,91.5 ; RX CTCSS frequencies list in floating point. must be in table ;txctcssfreqs = 100.0,91.5 ; TX CTCSS frequencies list. any frequency permitted. will follow RX CTCSS frequency rxctcssoverride = no ; Set to yes to start out in carrier squelch mode carrierfrom = dsp ; no,usb,usbinvert,dsp,vox voxhangtime = 2000 ; If carrierfrom=vox, mS to wait detecting RX audio before setting rxcarrierdetect=0 ctcssfrom = dsp ; no,usb,usbinvert,dsp rxdemod = flat ; input type from radio: no,speaker,flat rxsquelchdelay = 30 ; delayline in ms carrier squelch tail eliminator rxondelay = 0 ; Number of 20mSec intervals following the release of PTT. txoffdelay = 0 ; Ignore the receiver for a specified number of 20 millisecond txboost = no ; Add transmitter audio gain boost: no,yes txprelim = yes ; Audio processing on left output channel: no,yes txlimonly = yes ; Audio limiting with no pre-emphasis on output channel: no,yes txtoctype = notone ; Transmit tone control type: no,phase,notone txmixa = composite ; Left channel output: no,voice,tone,composite,auxvoice txmixb = no ; Right channel output: no,voice,tone,composite, auxvoice rxlpf = 0 ; Receiver Audio Low Pass Filter 0,1 2 rxhpf = 0 ; Receiver Audio High Pass Filter 0,1 txlpf = 0 ; Transmitter Audio Low Pass Filter 0,1 txhpf = 0 ; Transmitter Audio High Pass Filter 0,1,2 invertptt = no ; Invert PTT: no,yes duplex = 1 ; Duplex 0,1 duplex3 = 0 ; duplex 3 gain setting (0 to disable) ??? clipledgpio = 0 ; Enable ADC Clip Detect feature to use a GPIO output (0 to disable). legacyaudioscaling = no ; If yes, continue to do raw audio sample scaling and clipping, resulting in Tx audio levels increasing ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;; Configure your nodes here ;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; this one works 1234 txboost = yes txmixa = voice ;;;;; ASL3 Tune settings ;;;;; devstr = 1-1:1.0 rxctcssfreqs = 203.5 txctcssfreqs = 203.5 rxmixerset = 750 txmixaset = 920 txmixbset = 500 rxvoiceadj = 0.637655 rxctcssadj = 1.546622 txctcssadj = 200 rxsquelchadj = 786 fever = 1 ; this one does not work 4321 rxboost = no rxctcssfreqs = 183.5 txmixa = no devstr = 1-2:1.0 rxmixerset = 375 txmixaset = 500 txmixbset = 500 rxvoiceadj = 0.649457 rxctcssadj = 0.500000 txctcssadj = 200 rxsquelchadj = 800 fever = 1 ---
**Author:** ![KR8T](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/k/57b2e6/32.png) [@KR8T](https://community.allstarlink.org/u/KR8T)\ **Post date:** [October 21, 2026, 7:50pm UTC](https://community.allstarlink.org/t/usbradio-ctcss-from-dsp-allways-keyed/25108/2 "2026-10-21T19:50:52Z")
> [@n5faz1](#): > > txctcssfreq try adding txctcssfreq = 183.5 to 4321 ---
**Author:** ![n5faz1](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/n/ec9cab/32.png) [@n5faz1](https://community.allstarlink.org/u/n5faz1)\ **Post date:** [October 23, 2026, 1:52am UTC](https://community.allstarlink.org/t/usbradio-ctcss-from-dsp-allways-keyed/25108/3 "2026-10-23T01:52:00Z")
sorry made no difference. this is a receive only input so none of the tx params were configured. paul