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Re: [TenTec] Orion II NR Performance Measurements

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Orion II NR Performance Measurements
From: Lin Davis <linbdavis@earthlink.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 26 Mar 2006 15:25:09 -0500
List-post: <mailto:tentec@contesting.com>
Hi Ron,

What you described is the way I have been using the v2.xxx NR since day one 
(rcv'd OII 12/29/05). Changing the NR value seems to adjust the amount of 
expansion, and with the rf gain, the user can set the threshold. And I find it 
helps a lot. Also with SSB, but not as much for obvious reasons. Is this also 
your impression?


73,
Lin
WB1AIW


Ron Castro wrote:

> You are right about that Lin.  From what I can hear using the NR (2.032) 
> Downward Expansion is an effective feature that makes CW easier to copy if 
> the threshold is set just below the desired signal.  The way to test it 
> would be to measure the difference between the noise levels with the tone 
> turned off, as it would be between dits and dahs.
> 
> Ron N6AHA
> 


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