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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+TenTec\]\s+SDR\-1000\s+MDS\s*$/: 5 ]

Total 5 documents matching your query.

1. [TenTec] TenTec] SDR-1000 MDS (score: 1)
Author: Lee A Crocker <lee_crocker@yahoo.com>
Date: Sat, 15 Jul 2006 19:38:24 -0700 (PDT)
However 11 Hz is an attainable bandwidth with the SDR-1000, so -160 is a valid real figure and not just some imaginary figure. I use 10, 25 and 50 Hz all the time, and I can clearly tell the differen
/archives//html/TenTec/2006-07/msg00478.html (6,951 bytes)

2. Re: [TenTec] TenTec] SDR-1000 MDS (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sat, 15 Jul 2006 21:52:47 -0500
With the audio DSP in my FT-857D, I don't find the DSP CW narrow filter enhances a weak signals signal to noise. It remove QRM but doesn't bring the signal out of the noise. The mechanical filter at
/archives//html/TenTec/2006-07/msg00479.html (7,852 bytes)

3. Re: [TenTec] TenTec] SDR-1000 MDS (score: 1)
Author: Lee A Crocker <lee_crocker@yahoo.com>
Date: Sat, 15 Jul 2006 23:25:57 -0700 (PDT)
Jerry I don't know anything about the FT 857. I have had many rigs that used crystal/mechanical filters that distorted the signal and were virtually useless at extremely narrow bamdwidths. I have had
/archives//html/TenTec/2006-07/msg00480.html (8,672 bytes)

4. Re: [TenTec] TenTec] SDR-1000 MDS (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sun, 16 Jul 2006 09:56:30 -0500
Some filters do ring on noise and fast CW. The vintage Collins S-line filter is one of those. The Collins mechanical filter for the FT-857D is much better. The 270 Hz Kenwood filter in the TS430 was
/archives//html/TenTec/2006-07/msg00482.html (10,592 bytes)

5. Re: [TenTec] TenTec] SDR-1000 MDS (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Sun, 16 Jul 2006 15:31:20 -0400
The problem with using software and/or DSP Chips is that no one, except for the military, can afford DSP chips that can operate on signals up in the megahertz range. Thus, all DSP work in amateur rig
/archives//html/TenTec/2006-07/msg00489.html (11,646 bytes)


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