[TenTec] V2.059d AGC settings for Orion I

[Ron Castro]

While I can't comment on the similarity of the AGC between the O1 and O2, I 
suspect that the transmit audio changes were the same, since the apparent 
fix for the low end loss was to simply add more 'taps' to the digital 
filter.  This resulted in the response curve on my website www.n6aha.com, 
which is nearly identical within the limits of the test equipment to the 
published specification.  Subjectively, it sounds excellent and requires no 
external EQ if you have a good microphone.

On the topic of audio, I have done some more testing of the speech processor 
and I believe that it truly works the way it should, and that it can blow 
the doors off anything on the market today or from the past!  Just remember 
to roll off the low end a lot before pushing it up to the higher numbers.

Now, my next campaign will be to get the AM receive distortion addressed. 
I'm listening to KGO on the sub receiver right now, and I can hear 
significant distortion on voice peaks. This is not a result of selective 
fade induced skywave distortion since it's a strong daytime signal from a 
local station. There is virtually no distortion when listening in SSB.  I 
would also like to get the received bandwidth increased back to 12 kHz like 
it was in the O1 v. 1.x

Ron N6AHA

----- Original Message ----- 
From: "Mark DeBord" <markinkpt at hotmail.com>
To: <tentec at contesting.com>
Sent: Sunday, September 24, 2006 10:02 AM
Subject: [TenTec] V2.059d AGC settings for Orion I


> Well, since everyone has had a few weeks to play with the new AGC settings
> on the new firmware V2.059, I was wondering what everyone has settled with
> on the AGC settings on each speed (slow, med, fast). I have seen settings
> for the O II, but wonder if you guys on the O I are doing the same thing. 
> I
> am still hearing the digital artifacts at times, but adding a little hang
> time helps, but does not cure 100% (it is not heavy artifacts; just small
> "peaks" that occurs at voice/noise peaks; which is what I assume the 
> result
> of the new AGC delayed reaction in this release).
>
> Also, how is everyone liking the TX audio? Do you think it is back to
> "normal" as it was in V1 on the low-end? I now have all my settings,
> including mic gain, W2IHY settings, EQPlus settings, as I did in V1.
>
> The code is still very stable for me.
>
> Thanks for the feedback,
>
> Mark KA4ICK
>
>
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