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Re: [TenTec] Eagle vs any other

To: <geraldj@weather.net>, "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] Eagle vs any other
From: "CSM\(r\) Gary Huber" <glhuber@msn.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Fri, 17 Dec 2010 20:28:12 -0600
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>

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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