Thanks Tim, Grant, Rich and Larry.
Well, when I engage the NR I can turn the RF gain down to 1 and still
things sound noisy. I typically run my RF gain (w/o NR) at 55 to 70 on
40M. AS Tim describes below, it seems like engaging the NR locks the RF
gain at some high setting. However, it seems much too high.
If engaging the NR lowers the threshold, then it must lower it below
0.38 uV since I was running in that vicinity this weekend. (I have a
very quiet QTH and rarely use the noise blanker.) I remember the NR
working reasonably well on earlier firmware. Right now, my audio NIR-12
DSP seems to work better than the NR.
Thanks for all your inputs.
73, Joe
NZ8J wrote:
>Joe,
>I find the same thing, I think that is just the way it works when you turn
>on the NR, it kind of defeats the ability to reduce the RF gain. I think the
>change they made to the RF gain to allow you to reduce it and have the noise
>reduce as well was the single best firmware change they made. Before they
>changed that, the radio was not very nice to listen to when the bands were
>noisy or crowded... Of course that is my opinion, I'm sure you'll find folks
>who didn't mind it at all..
>73
>Tim
>NZ8J
>----- Original Message -----
>From: "Joe Giacobello" <k2xx@swva.net>
>To: "Barry Gross" <barry.n1eu@gmail.com>
>Cc: "Orion @contesting.com" <orion@contesting.com>
>Sent: Monday, November 28, 2005 10:17 AM
>Subject: Re: [Orion] 1.372
>
>
>
>
>>I thought the selectivity was outstanding during the test. I was
>>hearing weak sigs on 40M right next to S-9+ sigs.
>>
>>OTOH, the NR consistently raises the noise level. It's as if the RF
>>gain is being increased. I usually have to turn the RF gain way down
>>when using it. I really don't think it's working right on my rig.
>>Anyone else have similar behavior with 1.372?
>>
>>73, Joe
>>
>>Barry Gross wrote:
>>
>>
>>
>>>On 11/28/05, Christoph Rheker <christor@microsoft.com> wrote:
>>>
>>>
>>>
>>>
>>>>Yes, same here, happens usually on the Low Bands.
>>>>
>>>>My Orion with 1.372 works great until receiver (DSP) is overdriven by
>>>>strong signal- about S9 plus 30dB.
>>>>
>>>>
>>>>
>>>>
>>>
>>>I work quite a bit of topband with my Orion and can't say that I
>>>
>>>
>experience
>
>
>>>this problem. Have you tried turning down the RF Gain control?
>>>
>>>73,
>>>Barry N1EU
>>>_______________________________________________
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>>>http://lists.contesting.com/mailman/listinfo/orion
>>>
>>>
>>>
>>>
>>>
>>_______________________________________________
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>>
>>
>>
>
>
>
>
>
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