Ok all I'm back to work today and playing with this setup again. I was able to isolate a much better signal for COR than what I had before. This now truely goes from 0V->5V only when receiving and not when transmitting. However I'm still having issues. As soon as asterisk receives a signal it immediately tries to transmit a signal out. This then effectively pulls the PTT low and my receiver stops receiving. It is almost like it is in duplex mode but I have in usbradio.conf duplex=0 ; Full Duplex rxondelay=0 ; Uncomment and/or adjust for simplex nodes to eliminate "Ping Ponging" ; or "Relay Racing". ; A positive value here will instruct the usbradio driver to ignore the ; COR line for a specified number of 20mSec intervals following the ; release of PTT. Use this only on simplex nodes, and leave commented ; out for repeaters or other full duplex nodes. eeprom=1 Just for clarity I'll post my entire usbradio.conf below: [general] [usb] hdwtype=0 ; Leave this set to 0 for USB sound fobs modified using ; the instructions from usbfob.pdf. Use a setting of ; 1 is for Dingotel/Sph interfaces. rxboost=1 ; 0 = 20db attenuator inserted, 1= 20db attenuator removed ; Set to 1 for additonal gain if using a low-level receiver output rxctcssrelax=1 ; reduce talkoff from radios w/o CTCSS Tx HPF ; Do not change this, leave this as a 1 ;txctcssdefault=100.0 ; default tx ctcss freq, any frequency permitted ;rxctcssfreqs=100.0 ; rx ctcss freqs in floating point. must be in table ;txctcssfreqs=100.0 ; tx ctcss freqs, any frequency permitted rxctcssoverride=1 ; Set to 1 or yes to start out in carrier squelch mode carrierfrom=usb ; no,usb,usbinvert,dsp,vox ; no - no carrier detection at all ; usb - from the COR line on the modified USB sound fob ; usbinvert - from the inverted COR line on the modified USB sound fob ; dsp - from RX noise using dsp techniques ; vox - voice activated from RX audio ctcssfrom=no ; no,usb,dsp ; no - CTCSS decoding, system will be carrier squelch ; usb - CTCSS decoding using input from USB FOB ; (currently not supported) ; dsp - CTCSS decoding using RX audio in DSP. ; rxdemod option must be set to flat for this to work. rxdemod=speaker ; input type from radio: no,speaker,flat ; no - RX audio input not used ; flat - Use RX audio from discriminator (before de-emphasis) ; speaker - use de-emphasized audio txprelim=no ; Audio processing on left output channel: no,yes ; no - Audio is not pre-emphasized and limited. ; Suitable for use on a microphone input ; yes - Audio is pre-emphasized and limited. ; Suitable for direct connection to an FM modulator txlimonly=no ; Audio limiting with no pre-emphasis on output channel: no,yes ; no - Audio is not limited. ; yes - Audio is limited. ; Suitable for transmitters with no limiting but with pre-emphasis. txtoctype=no ; 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") txmixa=voice ; Left channel output: no,voice,tone,composite,auxvoice ; no - Do not output anything ; voice - output voice only ; tone - CTCSS tone only ; composite - voice and tone ; auxvoice - auxiliary voice output at headphone level for monitoring txmixb=no ; Right channel output: no,voice,tone,composite, auxvoice ; See txmixa above. invertptt=0 ; Invert PTT 0 = ground to transmit, 1 = open to transmit ; This is the collector lead of the 2n4401 on the modified ; usb sound fob. ; please refer to the howto for the procedure to do this. duplex=0 ; Full Duplex rxondelay=0 ; Uncomment and/or adjust for simplex nodes to eliminate "Ping Ponging" ; or "Relay Racing". ; A positive value here will instruct the usbradio driver to ignore the ; COR line for a specified number of 20mSec intervals following the ; release of PTT. Use this only on simplex nodes, and leave commented ; out for repeaters or other full duplex nodes. eeprom=1 Any thoughts on why asterisk would be trying to send a signal as soon as it receives one? After the first time (upon asterisk restart) it receives a signal it sends a beep followed by a morse code sequence. Thanks, Josh -----Original Message----- From: Corey Dean [mailto:n3fe@repeater.net] Sent: Thursday, July 04, 2013 8:48 AM To: Joshua Hintze; app_rpt-users@ohnosec.org Subject: RE: [App_rpt-users] Issue with Hangup after first keying Are you running full duplex on a simplex radio? Corey N3FE ________________________________________ From: app_rpt-users-bounces@ohnosec.org [app_rpt-users-bounces@ohnosec.org] On Behalf Of Joshua Hintze [joshh@imsar.com] Sent: Wednesday, July 03, 2013 3:58 PM To: app_rpt-users@ohnosec.org Subject: [App_rpt-users] Issue with Hangup after first keying Hello, It is my first posting on here. I have ALMOST gotten the ACID installation working. I'm using the URI interfaced to ACID and to my radio. The asterisk can properly key the radio and its working just fine with that. I can also connect to the node with iaxRpt directly with no problem and transmit OUT of my radio. However I am having some issues when my radio receives communication in that as soon as I get my first radio RX, asterisk will then play a tone out of the URI into the radio over and over again at about a one second interval. In the asterisk terminal it just keeps repeating: -- Hungup 'Zap/pseudo-1726358622' -- Hungup 'Zap/pseudo-1774817359' -- Hungup 'Zap/pseudo-691532115' -- Hungup 'Zap/pseudo-81389311' -- Hungup 'Zap/pseudo-465154784' -- Hungup 'Zap/pseudo-627058532' -- Hungup 'Zap/pseudo-1656870264' -- Hungup 'Zap/pseudo-1671691803' -- Hungup 'Zap/pseudo-50274194' forever keeping my radio always keyed. I have the COR from the radio going into the URI. I do not plan on using CTCSS and have tried tying it to ground as well as tying it to the COR as well. My usbradio.conf has the following: carrierfrom=usb ctcssfrom=no I have tried also ctcssfrom=usb as well. Any help would be appreciated. Thanks, Josh -- This message was scanned and is believed to be clean. Click here to report this message as spam.<http://simba.repeater.net:8080/cgi-bin/learn-msg.cgi?id=6EF48221A.A93B D>