[TenTec] Audio improvements on Argonaut VI

[Bob McGraw K4TAX]

Your points are well taken and are correct.

I did and have looked at your QRZ site.  Very impressive with all you've 
done.  Can't take anything away from you for your work. Nice!

73

Bob, K4TAX


On 8/20/2018 12:56 PM, Paul Christensen wrote:
> Bob,
>
> I would rather not post a brag sheet on my background in audio engineering.
> It's not necessary, nor helpful to make a point.  My comment was posted as a
> general observation when using certain headphones to mask what I believe is
> often an underlying design issue.  To your point, I have not measured the
> Argonaut VI nor was I referencing it.
>
> If changing headphones (on any receiver) results in different levels of
> residual hiss, noise, or artifacts, then the result is most often attributed
> to: (1) differences in frequency response; or (2) the more likely cause
> being a difference in headphone sensitivity.  Less sensitive headphones
> function much like an in-line audio attenuator where raising the post-AF
> audio masks residual hiss, digital noise, and other artifacts.
>
> Paul, W9AC
>
>
> -----Original Message-----
> From: TenTec <tentec-bounces at contesting.com> On Behalf Of Bob McGraw K4TAX
> Sent: Monday, August 20, 2018 1:37 PM
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] Audio improvements on Argonaut VI
>
> Fine on your test equipment and work in audio.  But have you actually
> measured the performance of the Tentec Argonaut VI receiver?   I have. My
> audio experience is rather extensive.   With 14 years as a recording
> engineer with CBS Records and 15 years in tech support with SONY Pro Audio
> and teaching Studio Electronics at Belmont college......just to mention a
> few.  I'm by no means a novice in the audio field.
>
> Bob, K4TAX
>
>
> Sent from my iPhone
>
> On Aug 20, 2018, at 12:20 PM, Paul Christensen <w9ac at arrl.net> wrote:
>
>>> "Have you heard, observed or measured the artifacts of this receiver?
> If
>> not, you have no clue as to the minuscule magnitude of the issue."
>>
>> Thanks Bob, but I think I have a clue.  People who actually know me
>> (and my
>> background) also think I have a clue.  I regularly use high-end audio
>> test equipment in my noise, level, and distortion measurements.  Audio
>> test equipment includes a Tektronix AA-501A analyzer with an
>> ultra-low-distortion
>> SG-505 module.  The Tek equipment is visible on the operating desk as
>> shown on my QRZ.com page.  I also use SpectraPlus software with a
>> pro-grade sound card.
>>
>> I stand by my prior comments.
>>
>> Paul, W9AC
>>
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>>
>
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