[arm-allstar] USB radio - no repeat audio

[Dave Petrie]

Attached is a write up I did to help some friends set up their raspberry
sound cards.
I already uploaded my Startech sound card conversion document but I can
email to anyone who wants it along with some other neat writeups.
Pleasure of being retired and playing hamradio
73
Dave

On Thu, Nov 11, 2021 at 7:51 AM Dave Petrie <wa2kjc at gmail.com> wrote:

> Hi Lu, maybe check the, devstr=1-1.2:1.0, that are in the
> simpleusb_tune_usb1.conf, and see if they match what you see when you run
> this command with your usb card plugged in. Just trying to verify you are
> plugged into the right usb port as they change with different models of
> raspberry. It's a little confusing when linux calls the device0 or device1
> when it has nothing to do with the devstr= number.
> .
> how to find my usb sound cards in linux:
> log into the site computer, log in as root. I use putty SSH from another
> windows computer on the system.
> Menu item 9 enter and then type:
> cd \ [there is a space after cd , then hit enter and then enter again,
> then cd / enter, to make sure you’re at the root command
> prompt,
> my login looks like this: [root at WA2KJC-PI /]#
> Then type:
> cat /proc/asound/cards
> and here is what I get:
> [root at WA2KJC-PI ~]# cat /proc/asound/cards
> 0 [Device ]: USB-Audio - USB PnP Sound Device
> C-Media Electronics Inc. USB PnP Sound Device at usb-3f980000.usb-1.2,
> full spe
> 1 [Device_1 ]: USB-Audio - USB PnP Sound Device
> C-Media Electronics Inc. USB PnP Sound Device at usb-3f980000.usb-1.1.3,
> full s
> Note: don’t pay attention to the 0[Device] or the 1[Device] that’s only
> the order in which they were inserted
> Not where they actually are in the 4 port usb connector:
> Usb is bottom left with the Ethernet on the left. Usb1 is bottom right.
> Usb2 is top left. Usb3 is top right.
> So insert only one usb audio card at a time and run the command and make a
> note of the “usb-1.2” or “usb-
> 1.1.3” etc etc
> bottom left usb usb-1.1.3
> bottom right usb usb-1.2
> top right usb usb-1.3
> top left usb usb-1.1.2
> The actual sound card doesn’t have any influence on the result, it’s only
> the port it’s plugged into is being
> identified with the usb something.
>
> After typing all this, some copy and paste, all you really have to do is
> plug the usb into a different port and
> try your audio test again until all ports have been tested. It might be a
> quicker way, maybe you already did that.
> Dave
>
> On Thu, Nov 11, 2021 at 7:21 AM "David McGough via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
>>
>> Hi Lu,
>>
>> No flames---chan_usbradio does work (with some "audio glitches") on
>> RPi3 or RPi4 hardware.  I'm not sure what's happening with your setup?
>>
>> ...I just tested on an RPi3A radio-less node and chan_usbradio works okay
>> in duplex=2 for me, using these settings:
>>
>> ;usbradio.conf
>> [usb1]
>> hdwtype=0
>> rxboost=1
>> txboost=1
>> rxctcssrelax=1
>> txctcssdefault=100.0
>> rxctcssfreqs=100.0
>> txctcssfreqs=100.0
>> ;rxctcssoverride=0
>> carrierfrom=usbinvert
>> ctcssfrom=no
>> rxdemod=flat
>> txprelim=yes
>> txlimonly=no
>> txtoctype=notone
>> txmixa=composite
>> txmixb=0
>> invertptt=0
>> duplex=1
>> rxondelay=0
>> rxnoisefiltype=0
>> eeprom=0
>>
>>
>> ;rpt.conf
>> [1234]
>> rxchannel=Radio/usb1
>> duplex=2
>>
>>
>>
>> 73, David KB4FXC
>>
>>
>> On Wed, 10 Nov 2021, "Lu Vencl via ARM-allstar" wrote:
>>
>> > I know I'm going to get flamed for this post, but as I mentioned before
>> > I still have a need on a couple of my nodes to use USB radio. I'm using
>> > simple USB everywhere I can but 2 of my 10 repeaters need to use USB
>> > radio. I just uncovered that there is no repeat audio when you use USB
>> > radio even with duplex=2. Just want to confirm that someone else knows
>> > about this or has experienced the same issue?
>>
>> > I don't believe I have anything else set up incorrectly but I just
>> > wanna confirm that I did not miss something? I transitioned from an old
>> > acid box to  hamvoip and copied everything over manually, including usb
>> > tune settings  .Everything else works perfectly fine. Just when local
>> > traffic occurs on the repeater, people can't hear each other.
>> >
>> > Thanks
>> >
>> > Lu
>> > KA4EPS
>> _______________________________________________
>>
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>>
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>>
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>>
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>>
>
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