[App_rpt-users] Beagleboard and USB URI dongle

[Steve Gladden]

Thanks I will give that a try..
What exactly is the difference? which DSP (if all) features do you lose
when you use that Interface..

I'd suspect you lose DTMF CTSCC and Carrier decode features..

But I've been unable so far to find the information that specifices the
difference..

Do you also lose any encode (transmit) features?

Thanks!!

Steve





> I think all you have to do is this.....
>
>
> rpt.conf: (snip)
>
> [2532]                                  ; Change this to your assigned
> node number
>
> rxchannel = SimpleUSB/usb               ; Rx audio/signalling channel
>
>
>
> simpleusb.conf: (entire file)
>
> ;
> ; SimpleUSB configuration
> ;
> [general]
>
> [usb]
>
> eeprom=0
>
> 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
>
> carrierfrom=usbinvert	; no,usb,usbinvert
> 			; 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
>
> ctcssfrom=no		; no,usb,usbinvert
> 			; no - CTCSS decoding, system will be carrier squelch
> 			; usb - CTCSS decoding using input from USB FOB
> 			; usbinvert - from the inverted CTCSS line on the modified USB sound
> fob
>
> txmixa=voice		; Left channel output: no,voice,tone,composite,auxvoice
> 			; no - Do not output anything
> 			; voice - output voice only
>
> 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=1		; Full Duplex
>
> plfilter=yes		; enable PL filter
>
> deemphasis=no		; enable de-emphasis (input from discriminator)
>
>
> --
> Tim
> :wq
>
> On Feb 15, 2011, at 6:14 AM, Steve Gladden wrote:
>
>> Is there a stand alone document or page of info for chan_simpleusb?
>>
>> I would like to try using it.
>>
>> Is it the same as chan_usb but without carrier sense /PL decode?
>> and DTMF decode?
>>
>> And on a standard PC how do you build with this instead of
>> chan_usbradio?
>>
>> Thanks!
>>
>> Steve
>>
>>
>>>
>>> Other then the part about not being able to set levels in software,
>>> you are correct. With chan_simpleusb you definitely can set levels
>>> in software.
>>>
>>> DTMF detection is definitely available with any channel driver.
>>>
>>> JIM WB6NIL
>>>
>>>> Date: Sun, 13 Feb 2011 17:02:51 -0800
>>>> Subject: Re: [App_rpt-users] Beagleboard and USB URI dongle
>>>> From: phil.n6tct at gmail.com
>>>> To: telesistant at hotmail.com
>>>> CC: app_rpt-users at ohnosec.org
>>>>
>>>> Two questions:
>>>>
>>>> (1) Do I understand that the main difference between chan_usbradio and
>>>> chan_simpleusb is whether or not CTCSS encoding and decoding, squelch,
>>>> pre-emphasis and soft limiting, de-emphasis, and audio level
>>>> adjustments are available in software?
>>>>
>>>> (2) Should DTMF digit detection be available with both chan_usbradio
>>>> and chan_simpleusb?
>>>>
>>>> If so, then it sounds like, assuming I have an RX radio that provides
>>>> proper audio and does CTCSS detection and COR, then I should be all
>>>> set with chan_simpleusb ... yes?
>>>>
>>>> (Ooops, I guess that was really three questions.)
>>>>
>>>> Thanks!
>>>>
>>>> Phil, N6TCT
>>>>
>>>> On Wed, Feb 9, 2011 at 8:50 AM, Jim Duuuude <telesistant at hotmail.com>
>>>> wrote:
>>>>> Yes, it works quite beautifuly with the URI, in fact it will support
>>>>> 2
>>>> of
>>>>> them
>>>>> *BUT* only with chan_simpleusb. The CPU does not have the horsepower
>>>>> to do the DSP routines used in chan_usbradio.
>>>
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>>
>>
>> Michigan Broadband Systems Inc.
>> "Always Connected"
>>
>> (734)527-7150
>>
>> Steve's cellphone: (734)904-1811
>>
>>
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Michigan Broadband Systems Inc.
"Always Connected"

(734)527-7150

Steve's cellphone: (734)904-1811


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