[arm-allstar] UPDATE - simpleusb, telemetry tones, Voter bug, template files

David McGough kb4fxc at inttek.net
Wed Mar 27 14:51:12 EDT 2019


Hi Scott,

Good to hear that the 119A is still available for now.  From what I've 
heard first-hand, real "A" chips are not easily found in the Asian market.

I don't think anyone would question that the "A" series is deprecated, at
this point. And, that's unfortunate since the "B" chips are clearly not a
drop-in replacement.


73, David KB4FXC


On Wed, 27 Mar 2019, "Scott Zimmerman via ARM-allstar" wrote:

>  > Genuine CM119B chips are now commonly used as no other genuine chip is
> being produced.
> 
> Doug,
> 
> I'm not sure where you got this information, but it is NOT TRUE. C-Media continues to produce the "A" series chips and I just 
> got done placing an order for 500pcs through one of their approved US vendors.
> 
> I have *PLENTY* of *GENUINE* CM119A's to build new Repeater-Builder RIM and RIM_lite interfaces.
> http://www.repeater-builder.com/products/usb-rim-lite.html
> 
> Scott
> 
> Scott Zimmerman
> Amateur Radio Call N3XCC
> 474 Barnett Road
> Boswell, PA 15531
> 
> On 3/27/2019 3:39 AM, "Doug Crompton via ARM-allstar" wrote:
> 
> > 
> > Genuine CM119B chips are now commonly used as no other genuine chip is
> > being produced. The DMK-URI uses it as does the ARA boards produced by
> > George other will probably follow as the old stock runs out. Note also the
> > CM119B chips have less maximum output than the prior varieties. The DMK-URI
> > board has a 2X op-amp that can be jumpered into the circuit. The ARA rev 2
> > boards have a fixed 7X rail-to-rail op-amp which gives 5VP-P output into
> > 100 ohms at maximum level.
> > 
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