I would have to say that the issue discussed with USB drops/pops/clicks  is NOT an issue that ”has to be”…  I use USB sound interfaces (CM108) for my D-Star repeater(s) running dstarrepeatercontroller software. One of my system production tests is to generate a dtmf character from my dstar portable and listen to the recovered dtmf on the far end. If you are familiar with AMBE and dtmf  

 

 Snip

From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] On Behalf Of Steve Gladden
Sent: Thursday, January 12, 2012 10:05 AM
To: app_rpt-users@ohnosec.org
Subject: [App_rpt-users] USB Sucks Yay! The Sequel!

 

 My understanding is that you can use *any* digium FXO/FXS (and possibly a less expensive clone) card it will work well and skrew the piece of crap USB interfaces.
I further understand/think that it *MUST* be a two port card with both FXO and FXS present is this true?
Or can you somehow get away with a single port FXO or FXS card?

Single port cards are cost comparative to a ready made DRI USB which is --->>>>>*NOT*<<<<<--- production remote repeater site quality/capable and good only for testing experimenting etc.
Even if such a card is TWICE the price of a DMK URI..  This is the way to go for a production system..
Which is *ALL* that I would ever run at a site..
And home I'll still maybe d*** around with USB interfaces which truly suck with app_rpt in ALL of my testing I've done in 3 years.

Am I clear in this understanding?

 

Any suggestions on cards/Interfaces that work well?

Any that don't?? stick with Digium?

I should have asked this bundle of questions 2 years ago *sigh*

 

I realize newer boards will not have PCI slots..  
"USB sucks + is unrealiable"

-->as I have been assured both through my own testing and the developers of app_rpt.

If you tell me you have a perfectly working sytem I'll have you do *my test* sit & listen locally at the system to the TX on continuously with PL encode and you *will* hear the audio pops & interruptions in the trasnmitted audio that I am confident are present in ALL usb installed systems :-).. but has been proven liveable for most.

If you absolutely have to go with USB for whatever reason beagleboard etc.. small low power controller
then it's time for a different controller if you require production/site performance & reliability.

 

 

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From: app_rpt-users-bounces@ohnosec.org [app_rpt-users-bounces@ohnosec.org] On Behalf Of Bradley Haney [kc9gqr@gmail.com]
Sent: Tuesday, January 10, 2012 2:24 PM
To: app_rpt-users@ohnosec.org
Subject: Re: [App_rpt-users] App_rpt-users Digest, Vol 35, Issue 20

I thought i would get the server set up and then get the USB to radio interface.. what is the best and cheap one to buy.  I don't want to roll my own  as if everything works out well we will move the unit to the repeater site in the Spring. But for now  i was going to put it on a simplex node.   I just didn't want to buy the adapter then stuck with it with no way to configure the server..    for the time being i will hook it to the ft2600 yaesu ..

 

any thoughts on usb to radio interface?