[App_rpt-users] No audio from URIx

[Willem Schreuder]

I have built my third AllStar node using a URIx, but cannot get Tx audio 
out to work.  The node receives audio perflectly, and keys the radio using 
the PTT line, but there is no audio either from asterisk (e.g. the time 
announcement) or the "flash" in radio-tune-menu.  Adjusting the Tx levels 
and boost has no effect.

I have swapped URIx, cable and radio with a working node, so I have 
eliminated a bad URIx, cable or radio as a possibility.  I have also 
eliminated a bad node configuration by applying a known good node 
configuration to the computer (which results in no Tx audio) and using the 
configuration of this node to a different computer (which works fine).

The problem therefore seems to be motherboard related.  I have tried two 
different motherboards:
   ECS NM70-I Celeron 1037 Mini ITX
   GIGABYTE GA-C1007UN-D Celeron 1007U Mini ITX

Both exhibit the exact same symptom:  No Tx audio.  The do share the Intel 
NM70 chipset.  Disabling or enabling the on board audio seems to have no 
effect.  lsusb shows only the URIx (C-Media Electronics, Inc) and the 
Intel USB hub (Intel Corp. Integrated Rate Matching Hub).

Is this a problem folks have previously encountered, or have any 
suggestions what else I can try?