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Re: [TenTec] Orion 1 and/or 2, Manual Notch Outside AGC Loop?

To: "Scott" <h2z8.zt18@att.net>, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Orion 1 and/or 2, Manual Notch Outside AGC Loop?
From: wa3fiy@radioadv.com
Reply-to: wa3fiy@radioadv.com, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 26 Feb 2008 14:43:15 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Not sure which AGC loop you are referring to but remember, the hardware 
AGC prior to the A to D converter must reduce any and all signals that would 
otherwise overdrive the A/D converter.    This is true of any IF DSP radio.

73,

-Lee-
WA3FIY



On 26 Feb 2008 at 13:02, Scott wrote:

> I've never owned a TenTec radio and currently have a 20 year old Icom. Great
> radio but it is time for a change. A friend suggested that I consider the
> Orion.
> 
>  
> 
> Here is something that I read on another news group with my paraphrasing.
> Any truth to the following?
> 
>  
> 
> The manual notch is outside of the receiver's AGC loop. The result is that
> notching a strong CW signal leaves the desired weak CW signal in the mud
> because the AGC voltage is derived from the stronger signal. Firmware CANNOT
> fix this problem.
> 
>  
> 
> Scott
> 
> K5DD
> 
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> 
> 
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