[App_rpt-users] USB Adapter has no EEPROM installed

Sun Nov 1 20:50:23 UTC 2015

Hi Guys,

I agree 100% that personal attacks only start flame wars and don't solve 
any problems.

However, I do agree with Fred. For those who haven't heard the difference
between simpleusb and usbradio, I suggest a simple test with a stock USB
sound FOB and a computer audio headset and mic combo....Put the USB FOB in
full duplex mode and talk to yourself. While I realize this is an
unscientific test, the difference between the two channel drivers is
immediately obvious and striking!

While many hams out there (including myself) do have great -radio- test
equipment, most lack the equipment to carefully check audio dynamic range,
frequency response and other audio-specific parameters.

Incidentally, for comparison purposes, another interesting experiment is 
to try this same headset test with one of the commercially available 
analog controllers out there...I've tried that, too, and as expected, the 
performance is even better, substantially better....But, I digress.

If anyone wants to try this and doesn't know how to proceed, I'll post a 
link to my exact test setup, if interested.

Anyhow....Please don't take these comments in a negative way. My -only- 
intention is to push the state-of-the-art forward. 

73, David KB4FXC

On Sun, 1 Nov 2015, Jim Duuuude wrote:

> Fred, this list is NOT a place for personally insulting remarks such as 
that. That type of behavior is not tolerated here.
> 
> Besides, as far as I am aware, Cory has, and uses, more then his 'ears' 
to make such determinations. He is one of the people on this list that 
has good, proper test equipment, and knows how to use it.
> 
> Jim, WB6NIL
> 
> To: n3fe at repeater.net
> From: fred at fmeco.com
> Date: Sun, 1 Nov 2015 14:56:58 -0500
> CC: app_rpt-users at ohnosec.org
> Subject: Re: [App_rpt-users] USB Adapter has no EEPROM installed
> 
> 

    Cory, You might have your hearing checked, you most likely think
    d-star sounds good also.  
> 

> 
    I never said USBradio was horrible, simply said usbradio audio is
    superior.  It's a subjective thing, most can hear the difference..
    obviously you can't or you would not have made such a statement...  

> 

> 
    The only answer to the argument you want.. Fred
> 

> 
    On 11/1/15 12:54 PM, Corey Dean wrote:
> 

      What degraded audio?  I have ran many many test and have yet
        to find this 'degraded audio'.    I have heard people talk about
        it but have yet seen any proof...
> 

> 
        Sent from my iPhone

> 
        On Nov 1, 2015, at 12:32 PM, Fred Moore <fred at fmeco.com>
        wrote:
> 

> 

          Larry can't answer #1. 
> 
          I simply program the radio to provide what I want on the
          accessory connector, then there is no EEPROM needed.
> 

> 
          As for answer #2
> 
          When you have COS and CTCSS (PL) available use simpleUSB it
          not only requires less processing power, it also does not
          suffer from degraded audio.  
> 

> 
          Just add the file and stanza you need.. 
> 

> 
          regards.. Fred
> 

> 
          On 11/1/15 6:21 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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> 
          -- 
Fred Moore
email: fred at fmeco.com
       fred at safes.com
phone:  321-217-8699

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    -- 
Fred Moore
email: fred at fmeco.com
       fred at safes.com
phone:  321-217-8699

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