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1. [TenTec] Re: synthesizers was Omni C (score: 1): Author: n4lq@iglou.com (Steve Ellington); Date: Tue, 27 Aug 2002 22:20:00 -0400; Keep in mind that while the band conversion oscillator in the Omni V, VI and Paragon is indeed xtal controlled, there is still a synthesizer, complete with PLL, wheezing and spitting out all manner o; /archives//html/TenTec/2002-08/msg00526.html (9,690 bytes)
2. [TenTec] Re: synthesizers was Omni C (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Mon, 26 Aug 2002 22:15:30 -0500; Tentec designed the Omni V, and VI (and I don't know about the Paragon) with the synthesizer at VHF and divided it down to reduce the phase noise. Its not perfect but its better than most rice boxes; /archives//html/TenTec/2002-08/msg00527.html (8,263 bytes)
3. [TenTec] Re: synthesizers was Omni C (score: 1): Author: farson@shaw.ca (Adam Farson); Date: Mon, 26 Aug 2002 23:00:10 -0700; Hi Jerry, .....that is, before the Japanese manufacturers started using DDS. As far as I am aware, Icom pioneered DDS in amateur transceiver design. One of the first high-end Japanese HF transceivers; /archives//html/TenTec/2002-08/msg00528.html (11,139 bytes)
4. [TenTec] Re: synthesizers was Omni C (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue, 27 Aug 2002 02:09:26 -0500; DDS can be good close in and when not stretched too far, but DDS is not at all clean, there are so many spurs it usually takes a PLL (with the attendant noisy VCO) to act as a spur filter. I'm going; /archives//html/TenTec/2002-08/msg00529.html (8,402 bytes)
5. [TenTec] Re: synthesizers was Omni C (score: 1): Author: WA3FIY@radioadv.com (WA3FIY); Date: Tue, 27 Aug 2002 09:31:08 -0400; I found this to be true a few years ago when searching for a digitally controlled low noise VFO for a particular project. As I recall spurs in the DDS system were around 80db down or so out a few hun; /archives//html/TenTec/2002-08/msg00530.html (10,890 bytes)
6. [TenTec] Re: synthesizers was Omni C (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue, 27 Aug 2002 08:10:23 -0500; The DDS has outputs at DC + desired frequency and clock - desired frequency of equal amplitude. Then there can be many others depending on the quality of the D/A and the number of bits in the D/A and; /archives//html/TenTec/2002-08/msg00532.html (9,580 bytes)
7. [TenTec] Re: synthesizers was Omni C (score: 1): Author: wa3fiy@radioadv.com (WA3FIY); Date: Tue, 27 Aug 2002 11:41:23 -0400; Minor point maybe. There is no "band conversion oscillator" in the Paragon. The paragon uses four VCO's in a multi-loop PLL for full band coverage. Each VCO covers approximately 7 or 8 Mhz. And the s; /archives//html/TenTec/2002-08/msg00536.html (10,644 bytes)
8. [TenTec] Re: synthesizers was Omni C (score: 1): Author: kw8k@yahoo.com (Stuart Satrun); Date: Tue, 27 Aug 2002 12:30:52 -0700 (PDT); we'll need a full report, never heard of this kit. 73 stu satrun (father to a 3rd year engineering student at Wayne State...i'm so damn proud of her.) == stu satrun kw8k St. Clair Shores, MI ________; /archives//html/TenTec/2002-08/msg00541.html (9,365 bytes)
9. [TenTec] Re: synthesizers was Omni C (score: 1): Author: n8coo@juno.com (Charles Mark Cring); Date: Wed, 28 Aug 2002 01:21:41 +0100; Not only did the Paragon use 4 VCOs in the range of 75.1-105 Mhz (50 kHz steps) ("major loop") it used an additional 120-130 Mhz VCO (2 kHz steps) divided by 200 to give 10 Hz steps ("minor loop"). I; /archives//html/TenTec/2002-08/msg00546.html (11,144 bytes)
10. [TenTec] Re: synthesizers was Omni C (score: 1): Author: RMcGraw@Blomand.Net (Robert & Linda McGraw K4TAX); Date: Tue, 27 Aug 2002 20:44:25 -0500; I have had my original Paragon since 1990 and also a real true (not an upgrade) Omni VI+. Both are killer radios but the Omni VI+ is better in the receive department. I use the Paragon for my AM rece; /archives//html/TenTec/2002-08/msg00547.html (12,771 bytes)

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