[Elecraft] noise reduction

[Charles Harpole]

So far in testing, still going on, the best noise reduction is the 

"u Filters" in the FT-9000D.


Charles Harpole

k4vud at hotmail.com






> Date: Sat, 23 Aug 2008 09:59:17 -0400
> To: elecraft at mailman.qth.net
> From: rlindzen at MIT.EDU
> Subject: Re: [Elecraft] K3 noise reduction vs. Clear Speech speaker
>
> When I got my K3 in May, I loved the NR. Even if it didn't help with
> weak signals on SSB, it certainly made listening more pleasant. With
> recent firmware, however, I have to agree that NR is a bummer. It
> always makes signals less pleasant to listen to on SSB regardless of
> setting. Any way to restore the old performance?
>
> Dick
> KA1SA
> #911
>
>>
>>>
>>I was the one asking for a comparison, and I received two replies,
>>each one saying that the external speaker (two different brands) they
>>were using was an improvement over the K3's noise reduction. I
>>ordered one, and sure enough, it's better. It seems that any NR
>>system is far from perfect however. But now my external NR gives me
>>some relief from the constant grind I have. I had quit using the K3's
>>NR not only because it wasn't helping on SSB, but also because if I
>>had been using it, the AF gain had to be set so high that the next
>>time I powered up the radio I was blasted out of my chair because it
>>powers up with NR off, even if it was on before. So I'll use the
>>outboard NR until the K3's NR becomes satisfactory for me. If it ever
>>does, I'll offer my NR speaker to some unfortunate OM with a lesser
>>radio.
>>
>>Dave W5DHM
>>Goshen, Indiana
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