Jerry,
Would you care to comment on
http://lists.contesting.com/_tentec/2002-10/msg00602.html (diode ring mixer
and transformer feedback circuit of the Corsair) compared to the recent
receiver designs of the SDR and hybrid SDR radios of the past few years? Thanks.
73 es DX,
Gary - AB9M
-----Original Message-----
From: Dr. Gerald N. Johnson
Sent: Friday, December 17, 2010 7:45 PM
To: tentec@contesting.com
Subject: Re: [TenTec] Eagle vs. any other
When the selectivity is way up front, the later stages introduce their
own broad band noise, all the way to the audio output amp, and digital
artifacts from DSP contribute a lot to that. Many a receiver can be
helped by a passive low pass filter on the speaker or headphones. One I
developed years ago is at:
http://www.geraldj.networkiowa.com/papers/speakerfilter.pdf It has
selectable cut off frequencies but it adds virtually no noise in the
stop band. It improves even the Corsair II.
73, Jerry, K0CQ
On 12/17/2010 7:34 PM, Paul DeWitte wrote:
> I think that Mike Bryce asked a legitimate question about the Eagle.
>
> I do not think that he went far enough with his question.
>
> One of the reasons that I like my Corsair II is the quiet receiver. How does
> the Eagle compare to the other radios mentioned by Mike?
>
> I have had several people tell me that their K3 is fatiguing to listen to.
> If the Eagle is in the same boat, it would not be a bargain at any price.
>
> Close in dynamic range is only part of the equasion.
>
> Rob Sherwood told me that his favorite radio is an IC 781. I was under the
> impression that it is his main radio. That was a couple of years ago so may
> be different now.
>
> Just my opinion
>
> 73 Paul K9OT
>
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