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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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