[TenTec] 2.041XL first audio crash

[Jim M.]

I was able to cause the continuous noise crash after selecting AF AGC mode,
and then activating the notch and the NR functions together.  Going back to
RF AGC clears it up.  Seems like a software bug in the DSP code that gets
loaded for AF AGC.  A pointer getting over written or something.  Also in AF
AGC mode, the NR function really suppresses the noise but then it slowly
rises over time, with a time constant (best I can explain it).  Seems like
the code associated with AF AGC mode needs some more work.  Not sure AF AGC
adds value.  My guess is that it was implemented as a solution to
observations that the notch and AN functions would not reduce S-meter
readings as expected.  By deriving AGC from audio, after the notches, then
AGC and S-meter would not be driven by the notched carrier.  

-----Original Message-----
From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]
On Behalf Of John
Sent: Saturday, February 28, 2009 9:45 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] 2.041XL first audio crash

I have tried to make my Orion II do what you are  describing  and I can not 
, I have no problem with either agc mode when the NR and Notch is on .  John

kb2huk
----- Original Message ----- 
From: "Jim M." <jmiller1706 at cfl.rr.com>
To: <sv8ing at yahoo.gr>; "'Discussion of Ten-Tec Equipment'" 
<tentec at contesting.com>
Sent: Saturday, February 28, 2009 9:15 PM
Subject: Re: [TenTec] 2.041XL first audio crash


>I suspect there are some latent software coding "bugs" causing this, and
> also causing the "red flash" screen.  This is a beta, which means they
> should get these reports and eventually fix the bugs.  New software always
> has bugs.
>
> -----Original Message-----
> From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]
> On Behalf Of Fotis SV8ING
> Sent: Saturday, February 28, 2009 3:07 PM
> To: Discussion of Ten-Tec Equipment
> Subject: [TenTec] 2.041XL first audio crash
>
>
> If I use NR and Notch together in the AF AGC mode,after a minute or so , I
> always get audio crash.I hear only ''white noise''.
> I change to RF AGC(which is fine) and then to AF AGC and the audio comes
> back.(or I switch the radio off and on )
>
> I tried it at least 10 times with the same results.
>
> 73
>
> Fotis SV8ING
>
> GREECE
>
>
>
>
>
>
>
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