[TenTec] Orion II NR Performance Measurements

[Ron Castro]

I haven't played with the NR much on SSB, but I do notice some bandwidth 
reduction, but the DE is still there.  I does help on CW if you get the RF 
gain set right.

Ron
N6AHA


----- Original Message ----- 
From: "Lin Davis" <linbdavis at earthlink.net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Sunday, March 26, 2006 12:25 PM
Subject: Re: [TenTec] Orion II NR Performance Measurements


> 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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