[App_rpt-users] USB Adapter has no EEPROM installed

Jim Duuuude telesistant at hotmail.com
Sun Nov 1 14:52:15 EST 2015


The radio tuning parameters are stored in the EEPROM. Therefore, its probably best
to put the EEPROM in the connector with the cable physically connected to the radio,
so that you can change URI's, and the tuning parameters move with the radio, not the URI.

Yes, there are people that want the EEPROM in the URI, but I really am not sure why.

Jim

From: bdboyle at bdboyle.com
Date: Sun, 1 Nov 2015 14:48:57 -0500
To: szingman at msgstor.com
CC: app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] USB Adapter has no EEPROM installed

you can order a uri with the memory installed.  

--BryanSent from my iPhone 6S...No electrons were harmed in the sending of this message.


On Nov 1, 2015, at 14:26, Steve Zingman <szingman at msgstor.com> wrote:


  
    
  
  
    Does the DMK URI ship with a EEPROM installed?

    I think it's external on the DB25 male connected to the URI. If
    there.

    

    On 11/01/2015 06:21 AM, Larry da Ponte
      wrote:

    
    
      
        Two questions for the group:
        

        
        #1 I'm seeing this in my /var/log/asterisk - I'm using a DMK URI
        with EEPROM and a Motorola GM300 with one of Marshall's Motorola
        Maxtrac, GM300 and M120 16 Pin Radio to URI cables.
        

        
        [Nov  1 11:30:05] NOTICE[6852]
            chan_usbradio.c: USB Adapter has no EEPROM installed or
            Checksum BAD on channel usb42372

          

          
          I understand that the benefit of the DMK URI with EEPROM
            is that the interface configuration can be stored in the URI
            as apposed to (where else?) - is this URI EEPROM feature
            taken advantage of with app_rpt and associated drivers?
          

          
          #2 How do I choose which channel driver to use -
            simpleusb or USBRadio?  From what I've been able to learn
            through varius wikis and posts on the subject, I would want
            to use simpleusb because all of the hardware connections for
            COS and CTCSS are provided so there is no reason to use the
            DSP features of USBRadio thus simplifying what the driver
            has to do and perhaps lowering the CPU utilization.  I've
            also read some posts that describe audio degredation in the
            USBRadio driver but I can't tell you the cause.  I expect
            the right answer here is for me to try out both and
            experiment - which I will do but would appreciate any
            wisdome from the group on their experience with these
            drivers when using the DMK URI and hardware connections for
            COS/CTCSS.  My current configuration below is getting
            favorable audio reports.
          

          
          I have no simpleusb.conf in my /etc/asterisk
          I have usbradio.conf and usbradio_tune_usb42372.conf
          

          
          I have the following in my
            rpt.conf: rxchannel=Radio/usb42372
          

          
          I have the following in my usbradio.conf:
          

          
          
            [usb42372]
            

            
            hdwtype=0	
            rxboost=1
            txboost=1
            rxctcssrelax=1
            txctcssdefault=71.9
            rxctcssfreqs=71.9
            txctcssfreqs=71.9
            ;rxctcssoverride=0
            carrierfrom=dsp
            ctcssfrom=dsp
            rxdemod=flat
            txprelim=yes
            txlimonly=no
            txtoctype=notone
            txmixa=composite
            txmixb=no
            invertptt=0
            duplex=0
            rxondelay=0
            rxnoisefiltype=0
            eeprom=1
            

            
            

            
            

            
            

            
          
        
      
      

      
      

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