[TenTec] TenTec Digest, Vol 116, Issue 10

[Robert Mcgraw]

And yes, the Tentec 712 USB Soundcard works quite well, is easy to set-up
and use and interfaces to most software and plugs in direct to Tentec
radios as the Orion series, Omni VII and Eagle.

73
Bob, K4TAX


> And yet another reason is that the motherboard sound cards are not
> optimized
> for DSP work that ham radio applications would like to make of them.   If
> you followed the Flex radio saga over the years, you know that they very
> quickly went from requiring the most advanced add-in sound card in your
> computer to either providing the computer or building it in to their
> radios.
> Also, companies like microHam, build their devices with their own
> "soundcard" in the device because it can be designed specifically to be
> optimized for the application.  The end result has been a win/win for ham
> radio.
>
> 	73, Duane
>
> Duane Calvin, AC5AA
> Austin, Texas
> www.ac5aa.com
>
>
>
> -----Original Message-----
> From: tentec-bounces at contesting.com
> [mailto:tentec-bounces at contesting.com]
> On Behalf Of Marty Hartwell
> Sent: Friday, August 10, 2012 3:05 PM
> To: tentec at contesting.com
> Subject: Re: [TenTec] TenTec Digest, Vol 116, Issue 10
>
> Another good reason is to dedicate the external sound card,
> so as to keep computer sounds from being sent over the air.
> Internal for windows/computer sounds, external for digital
> signals to be transmitted.
>
> Marty kd8bj
>
> On 08/10/2012 02:00 PM, tentec-request at contesting.com wrote:
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>> Today's Topics:
>>
>>     1. Re: ORION 1 vs ORION2 (Richards)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Fri, 10 Aug 2012 14:59:43 -0400
>> From: Richards <jruing at ameritech.net>
>> Subject: Re: [TenTec] ORION 1 vs ORION2
>> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
>> Message-ID: <50255A1F.6090600 at ameritech.net>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> I will hazard a WAG about the use of external sound cards.
>>
>> In the speech recognition world, it was discovered that some internal
>> sound cards, especially those built onto the motherboard, were poorly
>> implemented and were subject to EMI/RFI interference, adding noise to
>> the analog signal ahead of the DAC - so we went to external sound cards
>> (in that venue they are affectionately known as "USB sound pods" -
>> which
>> did the DAC closer to the microphone, and external to the electrically
>> noisy internal computer case - this was especially the case with laptop
>> computers - and in most cases, the problem could have been solved with
>> five cents worth of shielding.
>>
>> So, I am thinking you are externalizing the DAC  (Digital to Analog
>> Conversion) to avoid EMI/RFI issues.
>>
>> Any traction?   Do I win the cigar ?
>>
>> My next guess would involve native driver issues...   ;-)
>>
>> ====================  James -K8JHR  ==================
>>
>> On 8/10/2012 7:43 AM, Rick Dougherty NQ4I wrote:
>>
>> , a computer with
>>> USB sound card external interface(anybody know why), H
>>
>> ===================================================
>>
>>
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>> End of TenTec Digest, Vol 116, Issue 10
>> ***************************************
>>
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